Online PHP editor | refs for 2Juli

<?php function preg_array_key_exists($pattern, $array) { $keys = array_keys($array); return (int) preg_grep($pattern,$keys); } //Пример: $arr = array( "DirName" => "Ivan Ivanovich", "DirPhone" => '(843) 123-45-67', "ContactName" => 'Dmitriy Nikolaevich'); $pattern = '/^Dir/'; var_dump(preg_array_key_exists($pattern, $arr));