Online PHP editor | output for Qg1n9

@ 2014-10-28T17:00:34Z

<?php
$zero = 0; // global scope
$f1 = function() use ($zero) {
  $one = 1; // third-level closure scope of f4
  $f2 = function() use ($zero, $one) {
//    $two = 2; // second-level closure scope of f4
//    $f3 = function() use ($zero, $one, $two) {
//      $three = 3; // first-level closure scope of f4
//      $f4 = function() use ($zero, $one, $two, $three) {
//        $four = 4;  // local scope of f4
//        echo $zero + $one + $two + $three + $four;
//      }
//    }
  }
};
$f4();

Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.34: Parse error: syntax error, unexpected '}' in /in/Qg1n9 on line 15
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/Qg1n9 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/Qg1n9 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/Qg1n9 on line 3
Process exited with code 255.

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