3v4l.org

run code in 300+ PHP versions simultaneously
<?php "آرد@".replace(/(?=.)/g,'!'); // returns: ""!آ!ر!د""
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.25
Parse error: syntax error, unexpected '/', expecting ')' in /in/biEEr on line 2
Process exited with code 255.

preferences:
179.31 ms | 1399 KiB | 62 Q