Description:
------------
I get an unexpected behavior when passing an array by reference and after that try to use the function array_column.

Test script:
---------------
<?php
function byReference( & $array){
    foreach($array as &$item){
        $item['nanana'] = 'batman';
        $item['superhero'] = 'robin';
    }
}

$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'));


Expected result:
----------------
array(2) {
  [0]=>
  string(6) "batman"
  [1]=>
  string(6) "batman"
}


Actual result:
--------------
array(0) {
}