求解數組合并

Array ( [59] =>aa [17] => bb [18] =>cc [69] => dd [21] =>ee [22] => ss [23] => Array ( [0] => 1a[1] =>2a[2] => 3a [3] =>4a [4] => 55 ) [24] =>vv [26] => va [43] => Array ( [0] => 道 [1] =>向 [2] => 圾 [3] => 燈 [4] => 速 [5] => 燈 [6] => 則 ) [53] => 元 [54] => 995 )[1]=>Array ( [59] =>aa [17] => bb [18] =>cc [69] => dd [21] =>ee [22] => ss [23] => Array ( [0] => 1a[1] =>2a[2] => 3a [3] =>4a [4] => 55 ) [24] =>vv [26] => va [43] => Array ( [0] => 道 [1] =>向 [2] => 圾 [3] => 燈 [4] => 速 [5] => 燈 [6] => 則 ) [53] => 元 [54] => 995 )
如何將最後一維合并？
是用foreach遍曆時合并嗎？如果資料多了會不會卡住？

回複討論(解決方案)

你所謂的合并是什麼意思呢？哪個合并到哪個？

你所謂的合并是什麼意思呢？哪個合并到哪個？

Array ( [59] =>aa [17] => bb [18] =>cc [69] => dd [21] =>ee [22] => ss [23] => Array ( [0] => 1a[1] =>2a[2] => 3a [3] =>4a [4] => 55 ) [24] =>vv [26] => va [43] => Array ( [0] => 道 [1] =>向 [2] => 圾 [3] => 燈 [4] => 速 [5] => 燈 [6] => 則 ) [53] => 元 [54] => 995 )[1]=>Array ( [59] =>aa [17] => bb [18] =>cc [69] => dd [21] =>ee [22] => ss [23] => Array ( [0] => 1a[1] =>2a[2] => 3a [3] =>4a [4] => 55 ) [24] =>vv [26] => va [43] => Array ( [0] => 道 [1] =>向 [2] => 圾 [3] => 燈 [4] => 速 [5] => 燈 [6] => 則 ) [53] => 元 [54] => 995 )
合并成例如[23]=>2a,3a,4a,55..........

foreach($arr as $k=>$v){        if(is_array($v)) $arr[$k] = implode(',', $v);}print_r($arr);

foreach($arr as $k=>$v){        if(is_array($v)) $arr[$k] = implode(',', $v);}print_r($arr);

如果是三維數組合并第三維是不是這樣

foreach($arr as $k=>$v){foeach($v as $key=>$val){        if(is_array($val)) $v[$key] = implode(',', $val);}}

不一定，需判斷 $v 是數組後，方可進入 foeach($v as ...

$v[$key] = implode(',', $val);
改為：
$arr[$k][$key] = implode(',', $val);

且你需要判斷一下$v 是數組後才能遍曆$v ， 否則會報錯。

不一定，需判斷 $v 是數組後，方可進入 foeach($v as ...

正如你所說我失敗了
array(
[0]=>
array([8]=>aa[9]=> array([77]=>bb[88]=>cc)合并成:bb,cc[10]=>44
)
.................
)
....................
最終實現轉成二維數組。。。然後匯出excel
最終數組練的讓我頭痛，還沒完全撐握

應該這樣寫

$a = array(  0 => array(    8 => 'aa',    9 => array(      77 => 'bb',      88 => 'cc',    ),    10 => 44,  ),);$a = dimension_reduction($a); //執行一次降一次維print_r($a);$a = dimension_reduction($a);print_r($a);//降維function dimension_reduction($ar) {  $flag = 1;  foreach($ar as $k=>$v) {    if(is_array($v)) {      $flag = 0;      $ar[$k] = dimension_reduction($v);    }  }  if($flag) return join(',', $ar);  return $ar;}

Array
(
[0] => Array
(
[8] => aa
[9] => bb,cc
[10] => 44
)

)
Array
(
[0] => aa,bb,cc,44
)

