php添加具有相同值的数组
我在PHP中有这个数组,我想对相同数组的值求和php添加具有相同值的数组,php,Php,我在PHP中有这个数组,我想对相同数组的值求和 array:3 [ 0 => array:3 [ "days" => 1 "price" => 4000 "cost" => 4000 ] 1 => array:3 [ "days" => 1 "price" => 3000 "cost" => 3000 ] 2 => array:3 [ "days" => 1
array:3 [
0 => array:3 [
"days" => 1
"price" => 4000
"cost" => 4000
]
1 => array:3 [
"days" => 1
"price" => 3000
"cost" => 3000
]
2 => array:3 [
"days" => 1
"price" => 3000
"cost" => 3000
]
]
我要用这个密码:
array:2 [
0 => array:3 [
"days" => 1
"price" => 4000
"cost" => 4000
]
1 => array:3 [
"days" => 2
"price" => 6000
"cost" => 6000
]
]
我如何才能做到这一点?不是很节省时间或内存,而是工作:
$results = [];
// create a two dimensional array to collect all arrays which are the same
$collection = [];
foreach ($input as $elem) {
$collection[serialize($elem)][] = $elem;
}
// create the result array
foreach ($collection as $elems) {
$result = [];
foreach ($elems[0] as $key => $value) {
$result[$key] = $value * count($elems);
}
$results[] = $result;
}
print_r($results);
(假设你的数组是$input)Dude,为什么要改变这个问题?“现在它没有任何意义了…”Brainfeeder现在恢复了它的功能..你能帮忙吗?谢谢!它起作用了!如果我只想计算天数和成本,并将价格作为初始值,该怎么办?(上面代码中的3000)为什么首先要“对相同数组的值求和”?你想解决什么问题?您想在购物车或类似物品中对相同的物品进行分组吗?如果是,“相同数组”不是分组的好标准。也许你需要在成本和天数旁边加上一个商品ID。