php将json数组化输出

<?php

    //json格式数据

    $data = '[{"name":"username","value":"小明"},{"name":"password","value":"123456"},{"name":"hobby","value":"eat"},{"name":"sex","value":"man"},{"name":"school","value":"yangguang"}]';

    //转换成数组

    $arr = json_decode($data,true);

    //输出

    print_r($arr);

?>