多級數組遍曆問題

PHP新手請教各位一個問題，現已通過遞迴從資料庫中抓出來一個員工的所有下屬（包括下屬的下屬），print_r ($sub)效果如下：

Array(    [0] => User Object        (            [userId] => 365            [name] => aa            [cn_name] => 王A            [job] => A地區銷售工程師            [rep_id] => 368            [sub] => Array                (                )        )    [1] => User Object        (            [userId] => 367            [name] => cc            [cn_name] => 王C            [job] => A地區銷售主管            [rep_id] => 368            [sub] => Array                (                    [0] => User Object                        (                            [userId] => 379                            [name] => mm                            [cn_name] => 黃XX                            [job] => 銷售工程師                            [rep_id] => 367                            [sub] => Array                                (                                    [0] => User Object                                        (                                            [userId] => 381                                            [name] => abc                                            [cn_name] => 張abc                                            [job] => 銷售工程師                                            [rep_id] => 379                                            [sub] => Array                                                (                                                )                                        )                                )                        )                    [1] => User Object                        (                            [userId] => 380                            [name] => xxxx                            [cn_name] => 張XX                            [job] => 銷售工程師                            [rep_id] => 367                            [sub] => Array                                (                                )                        )                )        ))

現在的需求是，寫一個函數，遍曆這個多級數組，然後產生一個新的一維數組，類似這樣：

Array(    [0] => User Object        (            [userId] => 365            [name] => aa            [cn_name] => 王A            [job] => A地區銷售工程師            [rep_id] => 368        )    [1] => User Object        (            [userId] => 367            [name] => cc            [cn_name] => 王C            [job] => A地區銷售主管            [rep_id] => 368        )    [2] => User Object        (            [userId] => 379            [name] => mm            [cn_name] => 黃XX            [job] => 銷售工程師            [rep_id] => 367        )    [3] => User Object        (            [userId] => 381            [name] => abc            [cn_name] => 張abc            [job] => 銷售工程師            [rep_id] => 379        )    [4] => User Object        (            [userId] => 380            [name] => xxxx            [cn_name] => 張XX            [job] => 銷售工程師            [rep_id] => 367         ))

感覺這是數組的基本應用，但是一下腦子短路了，半天沒搞出來，所以求教各位，希望各位大神賜教，拜謝！

回複討論(解決方案)

都下班過節去了嗎？苦逼的還要加班。。

用foreach(xxx as key=>value)讀，新的數組賦值。

用foreach(xxx as key=>value)讀，新的數組賦值。

這個只能讀到第一級元素，第二級以後的就會丟掉了。。

遞迴產生的，當然也要遞迴降維

遞迴產生的，當然也要遞迴降維

恩是的，還是要用遞迴和全域變數才行，已經搞定了，謝謝

