PHP 从多维数组中删除重复值
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PHP remove duplicate values from multidimensional array
提问by Aadi
We can use array_unique()for remove duplicate entry from a single multidimensional array in php.Is it possible to use with multidimensional array? It is not working for me!
我们可以array_unique()用于从 php 中的单个多维数组中删除重复条目。是否可以与多维数组一起使用？它不适合我！
Here's what the array looks like
这是数组的样子
Array (
[0] => Array ( [0] => 1001 [1] => john [2] => example )
[1] => Array ( [0] => 1002 [1] => test [2] => dreamz )
[2] => Array ( [0] => 1001 [1] => john [2] => example )
[3] => Array ( [0] => 1001 [1] => example [2] => john )
[4] => Array ( [0] => 1001 [1] => john [2] => example )
)
Anybody can please help me...
任何人都可以请帮助我...
回答by Russell Dias
The user comments on the array_uniquepage do shed some light on this. You will most likely find some hidden gems in those comments - its a very handy documentation.
array_unique页面上的用户评论确实对此有所了解。您很可能会在这些评论中找到一些隐藏的宝石 - 这是一个非常方便的文档。
Just a quick browser through revealed the following to remove duplicates from a multi dimensional array:
只是一个快速浏览器通过显示以下内容从多维数组中删除重复项：
<?php
function super_unique($array)
{
$result = array_map("unserialize", array_unique(array_map("serialize", $array)));
foreach ($result as $key => $value)
{
if ( is_array($value) )
{
$result[$key] = super_unique($value);
}
}
return $result;
}
?>
回答by Amber
You could serialize the sub-arrays (via serialize()) into a new array, then run array_unique()on that, and then unserialize the resulting set of arrays.
您可以将子数组（通过serialize()）序列化为一个新数组，然后array_unique()在该数组上运行，然后对结果数组进行反序列化。
