Question

i have a multidimensional array whose index/keys (not the values) are like this:

this is how the submitted array looks

  [param] => Array
            (
                [3] => groupedlista
                [0] => groupedlistb
                [2] => groupedlistc
            )

        [f_name] => Array
            (
                [3] => grouplistaa
                [0] => grouplistbb
                [2] => grouplistcc
            )

        [f_label] => Array
            (
                [3] => grouplistL3
                [0] => grouplistL0
                [2] => grouplistL2
            )

this is how the order looks

0,2,3

i want that Result

  [param] => Array
            (
                [0] => groupedlistb
                [1] => groupedlistc
                [2] => groupedlista
            )

        [f_name] => Array
            (
                [0] => grouplistbb
                [1] => grouplistcc
                [2] => grouplistaa
            )

        [f_label] => Array
            (
                [0] => grouplistL0
                [1] => grouplistL2
                [2] => grouplistL3
            )

that’s it

PS: i use a jquery sort / add / delete feature in the form and i prefer to do the final sorting php-based. the index array [$i] is required to be declared at the form.

Answer 1

$order = '0,2,3';

$out = array(); // This will hold the sorted values
$order = explode(',',$order); // Turn the order into an array
foreach ($multiDimArray as $key => $subArray) { // Loop outer array
  foreach ($order as $pos) { // Loop order array
    if (isset($subArray[$pos])) { // Make sure the key exists
      $out[$key][] = $subArray[$pos]; // Put the correct value in the correct place
    }
  }
}

print_r($out);