php 如何按相同的键和值对数组进行分组
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时间：2020-08-25 02:50:45 来源:igfitidea点击:
How to group the array by the same key and value
提问by 408
I have an array like this:D
我有一个这样的数组：D
Array
(
[0] => Array
(
[type] => AAA
[label_id] => A1,35
)
[1] => Array
(
[type] => AAA
[label_id] => A2,34
)
[2] => Array
(
[type] => BBB
[label_id] => B1,29
)
[3] => Array
(
[type] => CCC
[label_id] => C1,20
)
[4] => Array
(
[type] => CCC
[label_id] => C2,19
)
[5] => Array
(
[type] => CCC
[label_id] => C3,18
)
)
Now i would like to make it group by the same key and value like this.
现在我想让它像这样按相同的键和值分组。
Array
(
[0] => Array
(
[type] => AAA
[label_id] => Array
(
[0] => A1,35
[1] => A2,34
)
)
[1] => Array
(
[type] => BBB
[label_id] => Array
(
[0] => B1,29
)
)
[2] => Array
(
[type] => CCC
[label_id] => Array
(
[0] => C1,20
[1] => C2,19
[2] => C3,18
)
)
)
does any one know how to do that?
有谁知道这是怎么做到的吗？
回答by Anthony Simmon
This should do the trick
这应该可以解决问题
$args = array
(
array( 'type' => 'AAA', 'label_id' => 'A1,35' ),
array( 'type' => 'AAA', 'label_id' => 'A2,34' ),
array( 'type' => 'BBB', 'label_id' => 'B1,29' ),
array( 'type' => 'CCC', 'label_id' => 'C1,20' ),
array( 'type' => 'CCC', 'label_id' => 'C2,19' ),
array( 'type' => 'CCC', 'label_id' => 'C3,18' )
);
$tmp = array();
foreach($args as $arg)
{
$tmp[$arg['type']][] = $arg['label_id'];
}
$output = array();
foreach($tmp as $type => $labels)
{
$output[] = array(
'type' => $type,
'label_id' => $labels
);
}
var_dump($output);
The output is :
输出是：
array
0 =>
array
'type' => string 'AAA' (length=3)
'label_id' =>
array
0 => string 'A1,35' (length=5)
1 => string 'A2,34' (length=5)
1 =>
array
'type' => string 'BBB' (length=3)
'label_id' =>
array
0 => string 'B1,29' (length=5)
2 =>
array
'type' => string 'CCC' (length=3)
'label_id' =>
array
0 => string 'C1,20' (length=5)
1 => string 'C2,19' (length=5)
2 => string 'C3,18' (length=5)
回答by Wayne Whitty
<?php
$grouped_types = array();
foreach($types as $type){
$grouped_types[$type['type']][] = $type;
}
?>
