Maison >développement back-end >tutoriel php >php数组重复数据的处理
<code>array(4) { [0] => array(7) { ["goodsId"] => string(2) "15" ["goodsNo"] => string(13) "9311770592581" ["goodsName"] => string(37) "DCS超级水润泡沫洗面/洁面乳" ["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超级营养精华" ["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超级营养水" ["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" } }</code>
把数组里的goodsId重复的商品信息合成一个,个数为quantity的总和(同样商品总和)
结果应为:
<code>array(4) { [0] => array(7) { ["goodsId"] => string(2) "15" ["goodsNo"] => string(13) "9311770592581" ["goodsName"] => string(37) "DCS超级水润泡沫洗面/洁面乳" ["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超级营养精华" ["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超级营养水" ["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" } }</code>
<code>array(4) { [0] => array(7) { ["goodsId"] => string(2) "15" ["goodsNo"] => string(13) "9311770592581" ["goodsName"] => string(37) "DCS超级水润泡沫洗面/洁面乳" ["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超级营养精华" ["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超级营养水" ["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" } }</code>
把数组里的goodsId重复的商品信息合成一个,个数为quantity的总和(同样商品总和)
结果应为:
<code>array(4) { [0] => array(7) { ["goodsId"] => string(2) "15" ["goodsNo"] => string(13) "9311770592581" ["goodsName"] => string(37) "DCS超级水润泡沫洗面/洁面乳" ["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超级营养精华" ["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超级营养水" ["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" } }</code>
废话不多说,直接上代码吧:
<code>$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保存不重复的id值 $news[$key] = $value; //$news保存不重复id的数组值 $newss[$value['id']] = $key; //$newss保存不重复的id的键值 }else { $k = $newss[$value['id']]; //取出重复的id保存的第一个键值 $count = (int)$news[$k]['count']; //取出第一个相同id保存的count值 $news[$k]['count'] = $count+1; //赋值到新的数组 } } var_dump($news);</code>
说一个思路吧,用一个字典
因为goodsId是唯一的, 所以k是goodsId
遍历数组,如果字典里有goodsId则加上对应的数值,没有则把对应的数据放到字典里
二维数组去重,看看这个是否你想要个结果:http://zhidao.baidu.com/link?...
这些数据是从数据库里面查出来的么,如果是那么要去重可以依赖sql查询去重,如果是后来merge的可以找找PHP版的迭代器类,操作可以简单一点,但这样始终免不了遍历数组的。
这是一个二维数组的去重问题吗?如果是的话,我找找以前的代码,曾经写过这样一个函数。