up vote -1 down vote favorite

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.

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please include a print_r() type output of what you have at the moment, and one of how you want it to end up. – DaveRandom Dec 15 '11 at 17:27
Also, can you please post the code you tried with usort? – Ryan Dec 15 '11 at 17:35
@daverandom i added the result code – Email Dec 15 '11 at 17:44
and here I wanted to know why a PHP array had keys to a resort :) – warren Dec 19 '11 at 14:49
@warren see the PS: part i wrote in the question. the resort/delete jquery function needs a "already in the form declared index" to work. otherwise the index would be automatically submitted onsubmit in the correct order and i wouldn't have the problem described. – Email Dec 19 '11 at 15:11
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1 Answer

up vote 1 down vote accepted 
$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);
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