3v4l.org

run code in 300+ PHP versions simultaneously
<?php $files = [ 'Hakim_123.txt', 'Mick_MacKusa.jpg', 'henry_rollins.gif', 'Z_zzz_zzz_zzz.csv' ]; $_GET['postname'] = 'H'; if (!preg_match('~^[A-Z]$~', $_GET['postname'] ?? '')) { exit('Stop trying to hack my scripts'); } exit( json_encode( array_values( array_unique( preg_filter( '~^' . strtolower($_GET['postname']) . '[^_]*\K_.*~', '', array_map('strtolower', $files) ) ) ) ) );
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
["hakim","henry"]
preferences:
158.54 ms | 407 KiB | 5 Q