3v4l.org

run code in 300+ PHP versions simultaneously
<?php function ReformatPhoneNumber($n){ if(!preg_match('/\\d+?\\-?\\d+?\\s?\\d+/',$n))throw new Exception('Invalid phone number'); $n=str_replace(array('-',' '), '', $n); if(!in_array(strlen($n), array(7,12)))throw new Exception('Invalid phone number'); return $n; } echo ReformatPhoneNumber('2352-23593665');

preferences:
35.76 ms | 402 KiB | 5 Q