php二维数组雷同键名相加

php二维数组相同键名相加

<br />Array<br />(<br />    [uid] => 19<br />    [pid] => Array<br />        (<br />            [0] => 91<br />            [1] => 81<br />        )<br /><br />    [price] => Array<br />        (<br />            [0] => 6<br />            [1] => 14<br />        )<br /><br />    [pnum] => Array<br />        (<br />            [0] => 1<br />            [1] => 1<br />        )<br /><br />)<br />

求相同键名的值相加如(price 的相加结果) 数组条数不确定
------解决方案--------------------

$ar = Array(<br />    'uid' => 19,<br />    'pid' => Array (<br />            0 => 91,<br />            1 => 81,<br />        ),<br />    'price' => Array (<br />            0 => 6,<br />            1 => 14,<br />        ),<br />    'pnum' => Array (<br />            0 => 1,<br />            1 => 1,<br />        ),<br />);<br /><br />$r = array_map(function($t) {<br />    return is_array($t) ? array_sum($t) : $t;<br />   }, $ar);<br />print_r($r);

Array<br />(<br />    [uid] => 19<br />    [pid] => 172<br />    [price] => 20<br />    [pnum] => 2<br />)<br /><br />

------解决方案--------------------
直接用foreach也可以。

$ar = Array(<br />    'uid' => 19,<br />    'pid' => Array (<br />            0 => 91,<br />            1 => 81,<br />        ),<br />    'price' => Array (<br />            0 => 6,<br />            1 => 14,<br />        ),<br />    'pnum' => Array (<br />            0 => 1,<br />            1 => 1,<br />        ),<br />);<br />foreach($ar as $k=>$v){<br />    $arr[$k] = is_array($v) ? array_sum($v) : $v;<br />}<br />print_r($arr);