3v4l.org

run code in 300+ PHP versions simultaneously
<?php $callback = function ($p1, $p2) use (&$count, $values) { echo "OK!"; } var_dump($callback);
Output for 5.4.0 - 5.4.30
Parse error: syntax error, unexpected 'var_dump' (T_STRING) in /in/HKIGK on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_STRING in /in/HKIGK on line 4
Process exited with code 255.
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190.73 ms | 1399 KiB | 67 Q