<?php
    $arr = array(
        array('name' => 'n4', 'value' => 'v1'),
        array('name' => 'n5', 'value' => 'v2'),
        array('name' => 'n3', 'value' => 'v3'),
    );

    usort($arr, array("Comp", "mycmp"));
    class Comp {
        function mycmp($e1, $e2) {
            return strcmp($e1['name'], $e2['name']);
        }
    }
    print_r($arr);
?>