[英]PHP Array unique values
我有這樣的數組
Array
(
[0] => Array
(
[id] => BA
[name] => British Airways
)
[1] => Array
(
[id] => BA
[name] => British Airways
)
[2] => Array
(
[id] => LA
[name] => Lanchile
)
[3] => Array
(
[id] => LA
[name] => Lanchile
)
[4] => Array
(
[id] => BA
[name] => British Airways
)
[5] => Array
(
[id] => BA
[name] => British Airways
)
)
而且我想得到
Array
(
[0] => Array
(
[id] => BA
[name] => British Airways
)
[1] => Array
(
[id] => LA
[name] => Lanchile
)
)
但在使用array_unique函數后,我只有
Array
(
[0] => Array
(
[id] => BA
[name] => British Airways
)
)
我究竟做錯了什么?
array_unique(my_array, SORT_REGULAR)
按照評論的要求。 :)
如上所述,array_unique不支持多維數組,但您可以迭代數據並構建自己的數組
<?php
$airlines = array(
array('id' => 'BA', 'name' => 'British Airways'),
array('id' => 'LA', 'name' => 'Lanchile'),
array('id' => 'BA', 'name' => 'British Airways'),
array('id' => 'LA', 'name' => 'Lanchile'),
array('id' => 'BA', 'name' => 'British Airways'),
array('id' => 'LA', 'name' => 'Lanchile'),
);
$tmp = array();
foreach ($airlines as $item) {
if (!in_array($item['id'], $tmp)) {
$unique[] = $item;
$tmp[] = $item['id'];
}
}
var_dump($unique); // $unqiue will have your desired results in it var_dump was just for testing
$airlines = array(
array('id' => 'BA', 'name' => 'British Airways'),
array('id' => 'LA', 'name' => 'Lanchile'),
array('id' => 'BA', 'name' => 'British Airways'),
array('id' => 'LA', 'name' => 'Lanchile'),
array('id' => 'BA', 'name' => 'British Airways'),
array('id' => 'LA', 'name' => 'Lanchile'),
);
$unique = array_map(
'unserialize',
array_unique(
array_map(
'serialize',
$airlines
)
)
);
var_dump($unique);
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.