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*/ class Bench_LtrimDigits extends Codebench { public $description = 'Chopping off leading digits: regex vs ltrim.'; public $loops = 100000; public $subjects = array ( '123digits', 'no-digits', ); public function bench_regex($subject) { return preg_replace('/^\d+/', '', $subject); } public function bench_ltrim($subject) { return ltrim($subject, '0..9'); } }