PHP从关联数组中删除元素 [英] PHP Remove elements from associative array

问题描述

我有一个看起来像这样的PHP数组:

I have an PHP array that looks something like this:

Index              Key     Value
[0]                1       Awaiting for Confirmation
[1]                2       Assigned
[2]                3       In Progress
[3]                4       Completed
[4]                5       Mark As Spam

当我var_dump数组值时，我得到以下信息:

When I var_dump the array values i get this:

array(5) { [0]=> array(2) { ["key"]=> string(1) "1" ["value"]=> string(25) "Awaiting for Confirmation" } [1]=> array(2) { ["key"]=> string(1) "2" ["value"]=> string(9) "Assigned" } [2]=> array(2) { ["key"]=> string(1) "3" ["value"]=> string(11) "In Progress" } [3]=> array(2) { ["key"]=> string(1) "4" ["value"]=> string(9) "Completed" } [4]=> array(2) { ["key"]=> string(1) "5" ["value"]=> string(12) "Mark As Spam" } }

我想删除已完成和标记为垃圾邮件.我知道我可以unset[$array[3],$array[4])，但是问题是有时索引号可能会不同.

I wanted to remove Completed and Mark As Spam. I know I can unset[$array[3],$array[4]), but the problem is that sometimes the index number can be different.

是否可以通过匹配值名称而不是键值来删除它们?

Is there a way to remove them by matching the value name instead of the key value?

推荐答案

您的数组很奇怪:为什么不只是将key用作索引，而将value用作...值呢? /strong>

Your array is quite strange : why not just use the key as index, and the value as... the value ?

如果这样声明数组，会不会容易得多:

Wouldn't it be a lot easier if your array was declared like this :

$array = array(
    1 => 'Awaiting for Confirmation', 
    2 => 'Asssigned', 
    3 => 'In Progress', 
    4 => 'Completed', 
    5 => 'Mark As Spam', 
);

这将允许您将key的值用作访问数组的索引...

That would allow you to use your values of key as indexes to access the array...

您将能够使用函数来搜索值，例如 array_search() :

And you'd be able to use functions to search on the values, such as array_search() :

$indexCompleted = array_search('Completed', $array);
unset($array[$indexCompleted]);

$indexSpam = array_search('Mark As Spam', $array);
unset($array[$indexSpam]);

var_dump($array);

比使用阵列更容易，不是吗?

Easier than with your array, no ?

相反，您的数组如下所示:

Instead, with your array that looks like this :

$array = array(
    array('key' => 1, 'value' => 'Awaiting for Confirmation'), 
    array('key' => 2, 'value' => 'Asssigned'), 
    array('key' => 3, 'value' => 'In Progress'), 
    array('key' => 4, 'value' => 'Completed'), 
    array('key' => 5, 'value' => 'Mark As Spam'), 
);

您必须遍历所有项目，以分析value，并取消设置正确的项目:

You'll have to loop over all items, to analyse the value, and unset the right items :

foreach ($array as $index => $data) {
    if ($data['value'] == 'Completed' || $data['value'] == 'Mark As Spam') {
        unset($array[$index]);
    }
}
var_dump($array);

即使可行，也不是那么简单...而且我坚持:您不能更改数组的格式，以使用更简单的键/值系统吗?

Even if do-able, it's not that simple... and I insist : can you not change the format of your array, to work with a simpler key/value system ?

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