3v4l.org

run code in 300+ PHP versions simultaneously
<?php function array_map($v) { return $v; }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
Fatal error: Cannot redeclare array_map() in /in/snc1O on line 3
Process exited with code 255.
preferences:
169.34 ms | 1395 KiB | 36 Q