- var_dump: documentation ( source)
- preg_match: documentation ( source)
- preg_replace: documentation ( source)
<?php
$id="s";
$message="";
$rm_trash = preg_replace('#\/\*.*\*\/#U','',$id);
var_dump($rm_trash);
var_dump(!preg_match('#^[^0-9]#',$rm_trash));