3v4l.org

run code in 300+ PHP versions simultaneously
<?php $id = 'a1'; if (preg_match('/[^0-9]/',$id)) { print "Match"; } else { print "No Match"; }

This is an error 500

Value for `_results` contains invalid data `array`


preferences:
150.42 ms | 1451 KiB | 11 Q