使用php array_merge_recursive时数字键输入错误

Question

I am trying to recursively merge two arrays using array_replace_recursive. This is the code:

$col = array();
$new = array_merge_recursive($col, array('table1' => array(1 => true)));
$new = array_merge_recursive($new, array('table1' => array(0 => false)));

The dump of the $new array is

array(1) { ["table1"]=> array(2) { [1]=> bool(true) [2]=> bool(false) } }

What i need is to preserve the numeric keys of the "table1" array. The expected result should be

array(1) { ["table1"]=> array(2) { [0]=> bool(false) [1]=> bool(true) } }

Does anyone have a solution for this?

Answer 1

You could switch the order of your arguments

$new = array_merge_recursive(array(), array('table1' => array(0 => false)));
$new = array_merge_recursive($new, array('table1' => array(1 => true)));

The problem you're running into is you already created a key so subsequent calls will append to the first element of the array.

Answer 2

使用array_replace_recursive而不是array_merge_recursive 。