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<?php $recursiveClosure = function(...$args) use(&$recursiveClosure) { array_walk($args, function($arg) use($recursiveClosure) { if (is_array($arg)) { call_user_func_array($recursiveClosure, $arg); }else{ print_r($arg); } }); }; $recursiveClosure([1,2,3],4,5,[6,7]);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1234567
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38
Parse error: syntax error, unexpected '.', expecting '&' or variable (T_VARIABLE) in /in/JqVmS on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.12, 5.3.14 - 5.3.29
Parse error: syntax error, unexpected '.', expecting '&' or T_VARIABLE in /in/JqVmS on line 2
Process exited with code 255.
Output for 5.3.13

Process exited with code 137.
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/JqVmS on line 2
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/JqVmS on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/JqVmS on line 2
Process exited with code 255.
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