我有一个php数组，如下所示：
Array
(
[0] => Array
(
[product] => 2
[price] => 30
[qnty] => 1
)
[1] => Array
(
[product] => 2
[price] => 30
[qnty] => 1
)
[2] => Array
(
[product] => 1
[price] => 250
[qnty] => 1
)
)
我想组合重复的值，添加"qnty"索引值，然后像这样打印数组：
Array
(
[0] => Array
(
[product] => 2
[price] => 30
[qnty] =>2
)
[1] => Array
(
[product] => 1
[price] => 250
[qnty] => 1
)
)
我怎样才能组合这个数组。请帮助我
尝试下面的代码。我假设你的阵列名称是$products
$merged = array();
foreach($products as $product) {
$key = $product['product'];
if(!array_key_exists($key, $merged)) {
$merged[$key] = $product;
}
else {
$merged[$key]['qnty'] += $product['qnty'];
}
}
echo '<pre>';
print_r($merged);
exit;