[伸手党]求个function,传入一个规律的二维数组,每个子数组都是键名相同的数组,键值都是整数,返回结果是二维数组多了一个子数组,是每个子数组的求和结果

[再看我一眼]

如题

举例:

传入 array(0=>array(a=>2,b=>6),1=>array(a=>5,b=>7));

得到结果是 array(0=>array(a=>2,b=>6),1=>array(a=>5,b=>7),2=>array(a=>7,b=>11));

工期紧 能省一点时间是一点, 伸手求一次...

[xuzuning]

$ar = array(
  array( 'a' => 2, 'b' => 6),
  array( 'a' => 5, 'b' => 7),
);
$t = array();
foreach($ar as $r) {
  foreach($r as $k=>$v) @$t[$k] += $v;
}
$ar[] = $t;

print_r($ar);

Array
(
    [0] => Array
        (
            [a] => 2
            [b] => 6
        )

    [1] => Array
        (
            [a] => 5
            [b] => 7
        )

    [2] => Array
        (
            [a] => 7
            [b] => 13
        )

)

[再看我一眼]

感谢版大~~~

[xuzuning]

或

$ar = array(
  array( 'a' => 2, 'b' => 6),
  array( 'a' => 5, 'b' => 7),
);
$t = call_user_func_array('array_map', array_merge(array(null),$ar));
$t = array_map('array_sum', $t);
$t = array_combine(array_keys($ar[0]), $t);
$ar[] = $t;

print_r($ar);

[傲雪星枫]

為何结果是 array(0=>array(a=>2,b=>6),1=>array(a=>5,b=>7),2=>array(a=>7,b=>11)); b=>6 b=>7 應該是13吧 看標題看得暈暈得，一看舉例就明了。