3v4l.org

run code in 300+ PHP versions simultaneously
<?php preg_match( '/(Name=)([0-9]{1,}),/', 'RunUO, Name=Pure Blood, Age=1, Clients=4, Items=110859, Chars=37967, Mem=270972K, Ver=2', $playersOnline ); echo $playersOnline[]; // 1234
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.25
Fatal error: Cannot use [] for reading in /in/lNBG8 on line 3
Process exited with code 255.
preferences:
179.11 ms | 1395 KiB | 62 Q