php數組重複資料的處理

array(4) {  [0] => array(7) {    ["goodsId"] => string(2) "15"    ["goodsNo"] => string(13) "9311770592581"    ["goodsName"] => string(37) "DCS超級水潤泡沫洗面/潔面乳"    ["price"] => string(5) "40.00"    ["currency"] => string(2) "15"    ["quantity"] => int(1)    ["goods_tax_price"] => string(1) "0"  }  [1] => array(7) {    ["goodsId"] => string(2) "16"    ["goodsNo"] => string(13) "9327693000805"    ["goodsName"] => string(21) "DCS超級營養精華"    ["price"] => string(5) "10.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "1"    ["goods_tax_price"] => string(1) "0"  }  [2] => array(7) {    ["goodsId"] => string(2) "17"    ["goodsNo"] => string(13) "9327693000744"    ["goodsName"] => string(18) "DCS超級營養水"    ["price"] => string(5) "30.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "1"    ["goods_tax_price"] => string(1) "0"  }  [3] => array(7) {    ["goodsId"] => string(2) "18"    ["goodsNo"] => string(13) "9311770592505"    ["goodsName"] => string(27) "DCS集中美白活力面膜"    ["price"] => string(5) "40.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "1"    ["goods_tax_price"] => string(1) "0"  }[4] => array(7) {    ["goodsId"] => string(2) "18"    ["goodsNo"] => string(13) "9311770592505"    ["goodsName"] => string(27) "DCS集中美白活力面膜"    ["price"] => string(5) "40.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "2"    ["goods_tax_price"] => string(1) "0"  }}

把數組裡的goodsId重複的商品資訊合成一個，個數為quantity的總和（同樣商品總和）

結果應為：

array(4) {  [0] => array(7) {    ["goodsId"] => string(2) "15"    ["goodsNo"] => string(13) "9311770592581"    ["goodsName"] => string(37) "DCS超級水潤泡沫洗面/潔面乳"    ["price"] => string(5) "40.00"    ["currency"] => string(2) "15"    ["quantity"] => int(1)    ["goods_tax_price"] => string(1) "0"  }  [1] => array(7) {    ["goodsId"] => string(2) "16"    ["goodsNo"] => string(13) "9327693000805"    ["goodsName"] => string(21) "DCS超級營養精華"    ["price"] => string(5) "10.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "1"    ["goods_tax_price"] => string(1) "0"  }  [2] => array(7) {    ["goodsId"] => string(2) "17"    ["goodsNo"] => string(13) "9327693000744"    ["goodsName"] => string(18) "DCS超級營養水"    ["price"] => string(5) "30.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "1"    ["goods_tax_price"] => string(1) "0"  }  [3] => array(7) {    ["goodsId"] => string(2) "18"    ["goodsNo"] => string(13) "9311770592505"    ["goodsName"] => string(27) "DCS集中美白活力面膜"    ["price"] => string(5) "40.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "3"    ["goods_tax_price"] => string(1) "0"  }}

回複內容：

array(4) {  [0] => array(7) {    ["goodsId"] => string(2) "15"    ["goodsNo"] => string(13) "9311770592581"    ["goodsName"] => string(37) "DCS超級水潤泡沫洗面/潔面乳"    ["price"] => string(5) "40.00"    ["currency"] => string(2) "15"    ["quantity"] => int(1)    ["goods_tax_price"] => string(1) "0"  }  [1] => array(7) {    ["goodsId"] => string(2) "16"    ["goodsNo"] => string(13) "9327693000805"    ["goodsName"] => string(21) "DCS超級營養精華"    ["price"] => string(5) "10.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "1"    ["goods_tax_price"] => string(1) "0"  }  [2] => array(7) {    ["goodsId"] => string(2) "17"    ["goodsNo"] => string(13) "9327693000744"    ["goodsName"] => string(18) "DCS超級營養水"    ["price"] => string(5) "30.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "1"    ["goods_tax_price"] => string(1) "0"  }  [3] => array(7) {    ["goodsId"] => string(2) "18"    ["goodsNo"] => string(13) "9311770592505"    ["goodsName"] => string(27) "DCS集中美白活力面膜"    ["price"] => string(5) "40.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "1"    ["goods_tax_price"] => string(1) "0"  }[4] => array(7) {    ["goodsId"] => string(2) "18"    ["goodsNo"] => string(13) "9311770592505"    ["goodsName"] => string(27) "DCS集中美白活力面膜"    ["price"] => string(5) "40.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "2"    ["goods_tax_price"] => string(1) "0"  }}

把數組裡的goodsId重複的商品資訊合成一個，個數為quantity的總和（同樣商品總和）

結果應為：

array(4) {  [0] => array(7) {    ["goodsId"] => string(2) "15"    ["goodsNo"] => string(13) "9311770592581"    ["goodsName"] => string(37) "DCS超級水潤泡沫洗面/潔面乳"    ["price"] => string(5) "40.00"    ["currency"] => string(2) "15"    ["quantity"] => int(1)    ["goods_tax_price"] => string(1) "0"  }  [1] => array(7) {    ["goodsId"] => string(2) "16"    ["goodsNo"] => string(13) "9327693000805"    ["goodsName"] => string(21) "DCS超級營養精華"    ["price"] => string(5) "10.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "1"    ["goods_tax_price"] => string(1) "0"  }  [2] => array(7) {    ["goodsId"] => string(2) "17"    ["goodsNo"] => string(13) "9327693000744"    ["goodsName"] => string(18) "DCS超級營養水"    ["price"] => string(5) "30.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "1"    ["goods_tax_price"] => string(1) "0"  }  [3] => array(7) {    ["goodsId"] => string(2) "18"    ["goodsNo"] => string(13) "9311770592505"    ["goodsName"] => string(27) "DCS集中美白活力面膜"    ["price"] => string(5) "40.00"    ["currency"] => string(2) "15"    ["quantity"] => string(1) "3"    ["goods_tax_price"] => string(1) "0"  }}

廢話不多說，直接上代碼吧：

$arr = array(  '0' => array(    'id' => 1,    'count' =>1,    ),  '1' => array(    'id' => 2,    'count' =>1,    ),  '2' => array(    'id' => 4,    'count' =>1,    ),  '3' => array(    'id' => 2,    'count' =>1,    ),  );$new = $news = $newss = array();foreach ($arr as $key => $value) {    if(!in_array($value['id'], $new)) {    $new[] = $value['id'];  //$new儲存不重複的id值    $news[$key] = $value;   //$news儲存不重複id的數組值    $newss[$value['id']] = $key;  //$newss儲存不重複的id的索引值  }else {    $k = $newss[$value['id']];  //取出重複的id儲存的第一個索引值    $count = (int)$news[$k]['count'];  //取出第一個相同id儲存的count值    $news[$k]['count'] = $count+1;     //賦值到新的數組  }}var_dump($news);

說一個思路吧，用一個字典
因為goodsId是唯一的， 所以k是goodsId
遍曆數組，如果字典裡有goodsId則加上對應的數值，沒有則把對應的資料放到字典裡

二維數組去重，看看這個是否你想要個結果：http://zhidao.baidu.com/link?...

這些資料是從資料庫裡面查出來的麼，如果是那麼要去重可以依賴sql查詢去重，如果是後來merge的可以找找PHP版的迭代器類，操作可以簡單一點，但這樣始終免不了遍曆數組的。

這是一個二維數組的去重問題嗎？如果是的話，我找找以前的代碼，曾經寫過這樣一個函數。

