3v4l.org

run code in 300+ PHP versions simultaneously
<?php $value = 'aké^abc'; $specs = \preg_match('#^(?=.*[a-zA-Z])[a-zA-Z. ]+$#', $value); if (! $specs) { var_dump('test'); }

preferences:
53.66 ms | 402 KiB | 5 Q