--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'; } } $array = [ [ 'superhero'=> 'superman', 'nanana' => 'no nana' ], [ 'superhero'=> 'acuaman', 'nanana' => 'no nana' ], ]; var_dump(array_column($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" }