How to sort multi-dimensional array (PHP)?

Question

How to sort this array by pos attribute even though keys (name, store_id, product etc.)

[Attributes] => Array
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Answer 1

You could use uasort() which lets you define your sorting logic and also maintains your associative indexes. Please note that it changes your original array and only returns a boolean based on success.

uasort($your_array, function($a, $b) {
    return $a['pos'] > $b['pos'];
});

My example works >= PHP 5.3 , but for older versions you can use a normal compare function as well.

See uasort() Documentation for details.

Answer 2

Have a look at the PHP function array_multisort.

http://php.net/manual/en/function.array-multisort.php

There is an example-function in the comments, which should be fine for you:

function array_orderby()
{
    $args = func_get_args();
    $data = array_shift($args);
    foreach ($args as $n => $field) {
        if (is_string($field)) {
            $tmp = array();
            foreach ($data as $key => $row)
                $tmp[$key] = $row[$field];
            $args[$n] = $tmp;
            }
    }
    $args[] = &$data;
    call_user_func_array('array_multisort', $args);
    return array_pop($args);
}

// $dataArray is the array that contains your data
$sorted = array_orderby($dataArray, 'pos', SORT_DESC);