[英]Associative arrays: how to get rid of duplicates?
我有一个数组:
Array
(
[0] => Array
(
[attribute_name] => Appliances
[attribute_value] => Washer
)
[1] => Array
(
[attribute_name] => Appliances
[attribute_value] => Dryer
)
[2] => Array
(
[attribute_name] => Appliances
[attribute_value] => Dishwasher
)
[3] => Array
(
[attribute_name] => Appliances
[attribute_value] => Microwave
)
[4] => Array
(
[attribute_name] => Console
[attribute_value] => Xbox360
)
[5] => Array
(
[attribute_name] => Console
[attribute_value] => PS3
)
)
我想生产:
Array
(
[0] => Array
(
[attribute_name] => Appliances
[attribute_value] => Washer, Dryer, Dishwasher, Microwave
)
[1] => Array
(
[attribute_name] => Console
[attribute_value] => Xbox360, PS3
)
)
在PHP中如何实现?
这是基于@andrewtweber原始解决方案的最终代码:
$new_arr = array();
foreach( $arr as $data ) {
if( !isset($new_arr[$data['attribute_name']]) ) {
$new_arr[$data['attribute_name']] = array();
}
$new_arr[$data['attribute_name']][] = $data['attribute_value'];
}
这会给你
array( 'Appliances' => array( 'Washer', 'Dryer', 'Dishwasher' ) );
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