arr多维判断加删除怎么写？

Question

Array
(
    [data] => Array
        (
            [0] => Array
                (
                    [type] => qq
                    [link] => http://y.qq.com/n/yqq/song/000MMGhY2emBhD.html
                    [songid] => 000MMGhY2emBhD
                    [title] => 青春修炼手册 (Live)
                    [author] => TFBOYS
                    [lrc] => [ti:青春修炼手册 (Live)]
[ar:TFBOYS]
[al:2014年湖南卫视中秋晚会]
[by:]
[offset:0]
[00:00.00]青春修炼手册 (Live) - TFBOYS
[00:02.91]跟着我 左手
[00:04.32]右手 一个慢动作
.......................
 )            [1] => Array
                (
                    [type] => qq
                    [link] => http://y.qq.com/n/yqq/song/001OeBng4QbYaF.html
                    [songid] => 001OeBng4QbYaF
                    [title] => 大梦想家 (Live)
                    [author] => TFBOYS
                    [lrc] => [ti:大梦想家 (Live)]
[ar:TFBOYS]
[al:双十一晚会]
......................
判断lrc的值如果为空，则删除 [0] => Array这个数组

Answer 1

for($i=0,$len=count($arr['data']); $i<$len; $i++){
    if($arr['data'][$i]['lrc']==""){
        unset($arr['data'][$i]);
    }
}
 
print_r($arr);
搞定了