3v4l.org

run code in 300+ PHP versions simultaneously
<?php $idfred = '123.Fred'; $fred = substr($idfred, strpos($idfred, '.')+1); echo $fred, "<br>"; $fred = preg_replace('/^([^.]*)./', '', $idfred); echo $fred, "<br>";

preferences:
39.14 ms | 402 KiB | 5 Q