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@ 2015-09-23T09:08:24Z

<?php

$array = [0, 1, 2];
$ref =& $array; // Necessary to trigger the old behavior
$i = 0;
foreach ($array as $k => &$val) {
  $i++;
  echo $val . ' ';
  if($i < 5 && !isset($array[$i])) $array[$i] = $val+1;
  if($i == 2) array_unshift($array, 'X');
}
echo PHP_EOL . json_encode($array);

Output
Performance
VLD
References
Branches

array_unshift: documentation ( source)
json_encode: documentation ( source)

preferences:dark modelive preview

48.78 ms | 402 KiB | 5 Q