好的,问题是,我阅读并尝试了很多基于完全重复性在这里找到的解决方案,但我需要一些不同的东西并且无法弄清楚......
因为我只想在只有 1 个数组值重复的情况下获取和删除重复值。后来将两者结合起来,但这并不难。
$a = array(
array(
'id' => 1,
'qty' => 1
),
array(
'id' => 0,
'qty' => 1
),
array(
'id' => 1,
'qty' => 2
)
);
我想要的结果是:
$b = array(
array(
'id' => 1,
'qty' => 3
),
array(
'id' => 0,
'qty' => 1
)
);
您可以执行以下操作:
<?php
$a = array(
array(
'id' => 1,
'qty' => 1
),
array(
'id' => 0,
'qty' => 1
),
array(
'id' => 1,
'qty' => 2
)
);
$idsList = array();
$res = array();
foreach ($a as $arr){
if (!in_array($arr['id'], $idsList)){
$res[$arr['id']] = $arr;
$idsList[] = $arr['id'];
}
else{
$res[$arr['id']]['qty'] += $arr['qty'];
}
}
echo "<pre>";
print_r($res);
要获得这样的数组:
Array
(
[1] => Array
(
[id] => 1
[qty] => 3
)
[0] => Array
(
[id] => 0
[qty] => 1
)
)
查看此演示:http://codepad.org/UP0G7WnE
$a = array(
array(
'id' => 1,
'qty' => 1
),
array(
'id' => 0,
'qty' => 1
),
array(
'id' => 1,
'qty' => 2
)
);
$b = array();
$ids = array();
for($i = 0; $i < count($a); $i++)
{
if(in_array($a[$i]['id'], $ids))
{
$j = array_search($a[$i]['id'], array_values($ids));
$b[$j]['qty'] += $a[$i]['qty'];
}
else
{
$b[$i]['id'] = $a[$i]['id'];
$b[$i]['qty'] = $a[$i]['qty'];
$ids[] = $a[$i]['id'];
}
}
echo "<pre>";
print_r($b);
这可能是一个解决方案:
$temp = array();
foreach ($a as $data){
if (isset($temp[$data['id']])){
$temp[$data['id']] += $data['qty'];
} else {
$temp[$data['id']] = $data['qty'];
}
}
// Format array
$b = array();
foreach ($temp as $id => $qty){
$b[] = array(
'id' => $id,
'qty' => $qty
);
}
输出将是:
Array
(
[0] => Array
(
[id] => 1
[qty] => 3
)
[1] => Array
(
[id] => 0
[qty] => 1
)
)