3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = function($iteratie=0) { global $a; echo "$iteratie\n"; if ($iteratie>=5) return $iteratie; else { $b = $iteratie + $a(++$iteratie); echo ":$b\n"; return $b; }; echo $a();
Output for 5.4.0 - 5.4.12
Parse error: syntax error, unexpected end of file in /in/sXfb6 on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.22
Parse error: syntax error, unexpected $end in /in/sXfb6 on line 3
Process exited with code 255.
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170.71 ms | 1395 KiB | 43 Q