3v4l.org

run code in 300+ PHP versions simultaneously
<?php function ($a, $a) { };
Output for 7.0.0
Fatal error: Redefinition of parameter $a in /in/8Vn3V on line 3
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
preferences:
164.27 ms | 1395 KiB | 35 Q