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@ 2014-09-10T13:51:13Z

<?php

function array_msort($array, $cols)
{
    $colarr = array();
    foreach ($cols as $col => $order) {
        $colarr[$col] = array();
        foreach ($array as $k => $row) { $colarr[$col]['_'.$k] = strtolower($row[$col]); }
    }
    $eval = 'array_multisort(';
    foreach ($cols as $col => $order) {
        $eval .= '$colarr[\''.$col.'\'],'.$order.',';
    }
    $eval = substr($eval,0,-1).');';
    eval($eval);
    $ret = array();
    foreach ($colarr as $col => $arr) {
        foreach ($arr as $k => $v) {
            $k = substr($k,1);
            if (!isset($ret[$k])) $ret[$k] = $array[$k];
            $ret[$k][$col] = $array[$k][$col];
        }
    }
    return $ret;

}

$a = array('a'=>array('aa'=>'3','bb'=>'c'),'b'=>array('aa'=>'1','bb'=>'a'),'c'=>array('aa'=>'2','bb'=>'b'));
$b = array_msort($a, array('aa'=>SORT_ASC));
var_dump($a);
var_dump($b);
?>

Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: array(3) { ["a"]=> array(2) { ["aa"]=> string(1) "3" ["bb"]=> string(1) "c" } ["b"]=> array(2) { ["aa"]=> string(1) "1" ["bb"]=> string(1) "a" } ["c"]=> array(2) { ["aa"]=> string(1) "2" ["bb"]=> string(1) "b" } } array(3) { ["b"]=> array(2) { ["aa"]=> string(1) "1" ["bb"]=> string(1) "a" } ["c"]=> array(2) { ["aa"]=> string(1) "2" ["bb"]=> string(1) "b" } ["a"]=> array(2) { ["aa"]=> string(1) "3" ["bb"]=> string(1) "c" } }

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