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18 years ago
I had a multidimensional array, which needed to be sorted by one of the keys. This is what I came up with...

<?php
function msort($array, $id="id") {
        $temp_array = array();
        while(count($array)>0) {
            $lowest_id = 0;
            $index=0;
            foreach ($array as $item) {
                if ($item[$id]<$array[$lowest_id][$id]) {
                    $lowest_id = $index;
                }
                $index++;
            }
            $temp_array[] = $array[$lowest_id];
            $array = array_merge(array_slice($array, 0,$lowest_id), array_slice($array, $lowest_id+1));
        }
        return $temp_array;
    }
?>

Ex:

<?php

//oh no, this is not in the ordered by id!!
$data[] = array("item"=>"item 4", "id"=>4);
$data[] = array("item"=>"item 1", "id"=>1);
$data[] = array("item"=>"item 3", "id"=>3);
$data[] = array("item"=>"item 2", "id"=>2);

var_dump(  msort($data)  ); //just msort it!

/* outputs 

array
  0 => 
    array
      'item' => 'item 1' (length=6)
      'id' => 1
  1 => 
    array
      'item' => 'item 2' (length=6)
      'id' => 2
  2 => 
    array
      'item' => 'item 3' (length=6)
      'id' => 3
  3 => 
    array
      'item' => 'item 4' (length=6)
      'id' => 4

*/

?>
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