参考PHP数组由多个索引 [英] Reference PHP array by multiple indexes

问题描述

这可能是某种怪异的长快捷方式，并请纠正我，如果我在这个思路错了...

This may be some sort of weird longer shortcut, and please correct me if I'm mistaken in this train of thought...

我有一个数据矩阵，看起来像：

I have a matrix of data that looks like:

unique_id | url | other random data...
unique_id | url | other random data...
unique_id | url | other random data...

我希望能够通过它要么是URL引用一个项目，或者它UNIQUE_ID - 有一个奇特的方式做到这一点？

I want to be able to reference an item by either it's url, or it's unique_id - is there a fancy way to do this?

我想作弊的解决办法是只是让两个数组，但我不知道是否有更好的方法。

I suppose the cheating solution would be to just make two arrays, but I was wondering if there is a better way.

推荐答案

尝试是这样的：

function selectByIdOrURL($array, $data) {
    foreach($array as $row) {
       if($row['unique_id'] == $data || $row['url'] == $data) return $row;
    }
    return NULL;
}

$array = array(
           array('unique_id' => 5, 'url' => 'http://blah.com'),
           array('unique_id' => 3, 'url' => 'http://somewhere_else.com')
         );
$found = selectByIdOrURL($array, 5); //array('unique_id' => 5, 'url' => 'http://blah.com')
$nfound = selectByIdOrURL($array, 10); //NULL

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