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Link: http://codepad.org/gd565TC3    [ raw code | output | fork ]

PHP, pasted on Mar 8:
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<?php

  function cmp($a, $b)
  {
    echo "Iteration\n";
    if ($a == $b) {
        return 0;
    }
    return ($a < $b) ? -1 : 1;
  }

  $arr = array(4,2,1,3);

  usort($arr, 'cmp');


Output:
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Iteration
Iteration
Iteration
Iteration


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