如何在PHP中替换多维数组中的数组键

Question

In a multidimensional array, how do I replace a null key with "None" ?

Here is an example:

  'None' → array(1) {
     [""] => array(4) {
      [0] => array(10) {
       'store' → str•2 '11'
       'supplier_number' → str•4 '6303'
    }

Should look like:

   'None' → array(1) {
     'None' => array(4) {
      [0] => array(10) {
       'store' → str•2 '11'
       'supplier_number' → str•4 '6303'
    }

Answer 1

$arr['None']['None'] = $arr['None'][''];

unset($arr['None']['']);

See also here: PHP rename array keys in multidimensional array