如何删除多维数组中指定元素?

  [0] => Array        (            [v] => 1            [fup] => 0            [n] => 服务器            [s] => Array                (                    [0] => Array                        (                            [v] => 2                            [fup] => 2                            [n] => one                            [s] => Array                                (                                    [0] => Array                                        (                                            [v] => 3                                            [fup] => 41                                            [n] => one                                        )                                    [1] => Array                                        (                                            [v] => 4                                            [fup] => 1                                            [n] => two                                        )                                    [2] => Array                                        (                                            [v] => 5                                            [fup] => 1                                            [n] => three                                        )                                )                        )                    [1] => Array                        (                            [v] => 42                            [fup] => 2                            [n] => two                            [s] => Array                                (                                    [0] => Array                                        (                                            [v] => 73                                            [fup] => 42                                            [n] => one                                        )                                    [1] => Array                                        (                                            [v] => 74                                            [fup] => 42                                            [n] => two                                        )                                    [2] => Array                                        (                                            [v] => 75                                            [fup] => 42                                            [n] => three                                        )                                )                        )                    [2] => Array                        (                            [v] => 43                            [fup] => 2                            [n] => three                        )                )        )

我想把这个多维数组中的  [fup] => '' 都删掉，应该怎么写？？

回复讨论(解决方案)

是删掉所有的 fup 项吗？递归呀！

$ar = 你的数组;foo($ar);function foo(&$ar) {  foreach($ar as &$r) {     if(isset($r['fup'])) unset($r['fup']);     if(isset($r['s'])) foo($r['s']);  }}

是删掉所有的 fup 项吗？递归呀！

$ar = 你的数组;foo($ar);function foo(&$ar) {  foreach($ar as &$r) {     if(isset($r['fup'])) unset($r['fup']);     if(isset($r['s'])) foo($r['s']);  }}

我是菜鸟，php是自学，所以递归这些还没写会
是的，删除所有的，fup项，我刚测试下为什么执行呢，什么结果都没有，那我要返回删除后的完整数组应该怎么写？

谢谢大神，试出来了

你打印出来看呀！你主贴中的不是你打印出来的吗？