Online PHP editor | output for qX9QN

@ 2014-05-21T23:22:23Z

<?php
$iter = 0;
function weight($array)
{   
    global $iter;
	$sum = array_sum($array);
	$rnd = mt_rand(0,$sum);
	foreach($array as $k=>$v)
	{ 
      $iter++;
	  if($rnd <= $v)
	  {
		return $k;
	  }
	  $rnd = $rnd - $v;
	}
}


$weights = range(0, 1000000);
$values = array_fill(0, count($weights), 0);

for ($x = 0; $x < 1000; $x++)
{
  $w = weight($weights);
  $values[$w] = $values[$w] + 1;
}

echo "$iter iterations performed";

var_dump($values);

Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.28: Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 32 bytes) in /in/qX9QN on line 20
Process exited with code 255.
Output for 5.2.3 - 5.2.17: Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 71 bytes) in /in/qX9QN on line 20
Process exited with code 255.
Output for 5.2.1 - 5.2.2: Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 24 bytes) in /in/qX9QN on line 20
Process exited with code 255.
Output for 5.1.6, 5.2.0: Process exited with code 137.

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