PHP 同一个数组内 相同的key 值相加
$arr1 = ['上海' => 20, '北京' => 30, '深圳' => 40,'广州' => 50,'南京' => 60,'深圳' => 70,'北京' => 80,'上海' => 90,'深圳' => 100,'南京' => 110];
数组里有重复的key 但值不同，想把相同的 key 合并 值相加；请各位大侠出出主意，拜谢！
<?php
$arr1 = ['ä¸æµ·' => 20, 'å京' => 30, 'æ·±å³' => 40,'广å·' => 50,'å京' => 60,'æ·±å³' => 70,'å京' => 80,'ä¸æµ·' => 90,'æ·±å³' => 100,'å京' => 110];
$a=[];
foreach ($arr1 as $k=>$v) $a[$k]+=$v;
print_r($a);
?>
$arr1 = ['ä¸æµ·' => 20, 'å京' => 30, 'æ·±å³' => 40,'广å·' => 50,'å京' => 60,'æ·±å³' => 70,'å京' => 80,'ä¸æµ·' => 90,'æ·±å³' => 100,'å京' => 110];
$a=[];
foreach ($arr1 as $k=>$v) $a[$k]+=$v;
print_r($a);
?>
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第1个回答 2017-10-18
不会在同级数组中有“重复的key”....你可能看错了。
比如数据原本该是2个子数组..
$arr1 =[['上海' => 20, '北京' => 30, '深圳' => 40,'广州' => 50,'南京' => 60],
['深圳' => 70,'北京' => 80,'上海' => 90,'深圳' => 100,'南京' => 110]
];本回答被网友采纳
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