3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = function($y) { using ($x); if ($y>1) return 1+$x($y-1); return 1; } return $x(3);
Output for 5.4.0 - 5.4.32
Parse error: syntax error, unexpected 'return' (T_RETURN) in /in/BIBrd on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_RETURN in /in/BIBrd on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/BIBrd on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/BIBrd on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/BIBrd on line 3
Process exited with code 255.

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