3v4l.org

run code in 300+ PHP versions simultaneously
<?php $counter=0; $increment = function () use ($counter) { ++$counter; } $increment(); $increment(); var_dump($counter);
Output for 5.4.0 - 5.4.31
Parse error: syntax error, unexpected '$increment' (T_VARIABLE) in /in/Ee6oJ on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_VARIABLE in /in/Ee6oJ on line 7
Process exited with code 255.
preferences:
187.54 ms | 1395 KiB | 68 Q