我想要数组元素的总和，它们具有相同的元素'Id'。我想获得不包含重复元素"id"的新数组。我的数组结构如下。
Array
(
[0] => Array
(
[id] => 693
[quantity] => 40
)
[1] => Array
(
[id] => 697
[quantity] => 10
)
[2] => Array
(
[id] => 693
[quantity] => 20
)
[3] => Array
(
[id] => 705
[quantity] => 40
)
)
我想得到预期的结果
Array
(
[0] => Array
(
[id] => 693
[quantity] => 60
)
[1] => Array
(
[id] => 697
[quantity] => 10
)
[2] => Array
(
[id] => 705
[quantity] => 40
)
)
试试这个
<?php
$array = array(
array('id' => 693, 'quantity' => 40),
array('id' => 697, 'quantity' => 10),
array('id' => 693, 'quantity' => 20),
array('id' => 705, 'quantity' => 40),
);
$result = array();
foreach($array as $k => $v) {
$id = $v['id'];
$result[$id][] = $v['quantity'];
}
$new = array();
foreach($result as $key => $value) {
$new[] = array('id' => $key, 'quanity' => array_sum($value));
}
echo '<pre>';
print_r($new);
?>
您还可以执行以下操作：
<?php
$final = array();
foreach($array as $value) {
$id = $value['id'];
$filter = array_filter($array, function($ar) {
GLOBAL $id;
$valueArr = ($ar['id'] == $id);
return $valueArr;
});
$sum = array_sum(array_column($filter, 'quantity'));
$final[$id] = array('id' => $id, 'quantity' => $sum);
}
echo '<pre>';
print_r($final);
?>