Online PHP editor | refs for 8mKNA

<?php $array = [ [ 'a' => 1, 'b' => 2, 'c' => 3], [ 'a' => 4, 'b' => 5, 'c' => 6], [ 'a' => 7, 'b' => 8, 'c' => 9] ]; foreach ($array as &$val) { unset($val['a']); } foreach ($array as $key => $val) { echo $key . ' => ' . $val['b'] . ', ' . $val['c'] . PHP_EOL; } $arr = [ 'a' => 1, 'b' => 2 ]; $arrRef = &$arr; unset($arrRef['a']); var_dump($arrRef); var_dump($arr);