[PHP] array_multisort() 함수

<?php
$age = array(
          array(
            'a' => 'sdf',
            'b' => 2
          ), 
          array(
            'a' => 'xcv',
            'b' => 1
          )
    );

foreach ((array) $age as $key => $value) {
	$sort[$key] = $value['b'];
}

array_multisort($sort, SORT_ASC, $age);

print_r($age);
?>

결과 : Array ( [0] => Array ( [a] => xcv [b] => 1 ) [1] => Array ( [a] => sdf [b] => 2 ) )