3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace a; $a [1,2,3]; \array_keys($a);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.6
Parse error: syntax error, unexpected ',', expecting ']' in /in/VPEmI on line 5
Process exited with code 255.
preferences:
168.17 ms | 1395 KiB | 35 Q