PHP - Sort Array By SubArray Value By Maintaining original Array key

I would go with uasort, it looks much simpler to me:

// $arr is your Array uasort($arr, function ($a, $b) { return $a['name'] - $b['name']; }); 

Here is an example: http://sandbox.onlinephpfunctions.com/code/a9f2d1e9702834b3a35206125429739222770301

$arr assuming your array containing numeric keys and sort it by using array_multisort.

array_multisort will return sorted array.
array_combine will combine your original keys with sorted array.

Use:

$result = array_sort_by_column_preserve_keys($arr); echo '<pre>';print_r($result);echo '</pre>'; 

Method :

function array_sort_by_column_preserve_keys($arr) { $ar2 = []; foreach($arr as $key => $sub) { $ar2[ $key ] = $sub; } $keys = array_keys($arr); array_multisort($ar2, SORT_ASC, SORT_NUMERIC, $arr, $keys); return $result = array_combine($keys, $arr); } 

Please try this,

$array=array( "251" => array( "color" => "", "name" => 8, "nbr" => 1, "url_name" => "taille-8", "meta_title" => ""), "323" => array( "color" => "", "name" => 7, "nbr" => 2, "url_name" => "taille-7", "meta_title" => ""), "127" => array( "color" => "", "name" => 34, "nbr" => 2, "url_name" => "taille-34", "meta_title" => ""), ); function swapArray( &$arr,$firstPos,$secondPos){ //echo PHP_EOL."swap: ".$firstPos.", ".$secondPos.PHP_EOL; foreach($arr[$firstPos] as $k=>$v){ //echo PHP_EOL.$k." => ".$v.PHP_EOL; $tmp=$v; $arr[$firstPos][$k]=$arr[$secondPos][$k]; $arr[$secondPos][$k]=$tmp; } } var_dump($array); $keys=array(); // store all key values $num=count($array); foreach($array as $key=>$tmpArray) $keys[]=$key; //var_dump($keys); for($i=0; $i<$num; $i++){ for($j=$i+1; $j<$num; $j++){ if($array[$keys[$i]]["name"]>$array[$keys[$j]]["name"]){ swapArray($array,$keys[$i],$keys[$j]); } } } var_dump($array);