Online PHP editor | refs for NlMWJ

<?php class A { static function cast(&$val, $key, $allow_zero_first_character = false) { if (is_numeric($val)) { if($allow_zero_first_character || (!$allow_zero_first_character && $val[0] != '0')) { $val += 0; } } } static function run() { $arr = ['stri33ng123', 84, 76.7, '45.6', '67.5e45', '56,9']; var_dump($arr); //array_walk($arr , ['self', 'cast']); array_walk($arr , 'self::cast'); var_dump($arr); } } A::run();