--TEST--
Bug #69723 (Passing parameters by reference and array_column)
--FILE--
<?php
function byReference(&$array)
{
    foreach ($array as &$item) {
        $item['nanana'] = 'batman';
        $item['superhero'] = 'robin';
    }
}
function main()
{
    $array = [['superhero' => 'superman', 'nanana' => 'no nana'], ['superhero' => 'acuaman', 'nanana' => 'no nana']];
    var_dump(array_column($array, 'superhero'));
    byReference($array);
    var_dump(array_column($array, 'superhero'));
}
?>
--EXPECT--
array(2) {
  [0]=>
  string(8) "superman"
  [1]=>
  string(7) "acuaman"
}
array(2) {
  [0]=>
  string(5) "robin"
  [1]=>
  string(5) "robin"
}