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最近做的一个项目要实现多个相同数组的相加合并功能，需要实现对应键名的键值相加，具体说明如下：

有如下多个数组：

array(13) { [14] => string(1) "4" [15] => string(1) "4" [16] => string(1) "4" [17] => string(1) "4" [18] => string(1) "4" [19] => string(2) "30" [20] => string(2) "10" [21] => string(1) "5" [22] => string(1) "2" [23] => string(1) "2" [24] => string(1) "1" [25] => string(2) "17" [26] => string(2) "10" } array(13) { [14] => string(1) "4" [15] => string(1) "4" [16] => string(1) "3" [17] => string(1) "3" [18] => string(1) "4" [19] => string(2) "30" [20] => string(2) "10" [21] => string(1) "5" [22] => string(1) "2" [23] => string(1) "1" [24] => string(1) "1" [25] => string(2) "15" [26] => string(2) "10" } array(13) { [14] => string(1) "3" [15] => string(1) "4" [16] => string(1) "4" [17] => string(1) "4" [18] => string(1) "4" [19] => string(2) "30" [20] => string(1) "5" [21] => string(1) "5" [22] => string(1) "2" [23] => string(1) "2" [24] => string(1) "1" [25] => string(2) "15" [26] => string(2) "10" }

要合并为一个数组，其中对应项的值相加，得出的数组如下（以下数组只为示例，并非实际运算结果）：

array(13) { [14] => int(11) [15] => int(12) [16] => int(14) [17] => int(14) [18] => int(16) [19] => int(118) [20] => int(34) [21] => int(19) [22] => int(8) [23] => int(7) [24] => int(4) [25] => int(65) [26] => int(38) }

具体函数代码：

//数组相同键，值相加。 function array_value_sum(){     $res = array();     foreach (func_get_args() as $arr) {         foreach ($arr as $k => $v){             if (!isset($res[$k])){                 $res[$k] = $v;             }else{                 $res[$k] += $v;             }         }     }     return $res; }

调用方式：

$arr = array(); foreach ($array as $k => $v) {     $v = json_decode($v,true);     $arr = array_value_sum($v,$arr); } var_dump($arr);