内置对 PHP 集合的支持?
我正在寻找一种简单的方法来在 php 中创建一个不允许重复条目但允许轻松组合其他集合或数组的数组.
I'm looking for a simple way to create an array in php that will not allow duplicate entries, but allows for easy combining of other sets or arrays.
我最感兴趣的是该语言中是否存在这样的功能，因为编写自己的功能并不难.如果我不需要，我只是不想.
I'm mostly interested in whether such a feature exists in the language because writing my own wouldn't be difficult. I just don't want to if I don't need to.
推荐答案
只是一个想法，如果你使用数组键而不是值，你会确保没有重复，这也可以轻松合并两个集".
Just an idea, if you use the array keys instead of values, you'll be sure there are no duplicates, also this allows for easy merging of two "sets".
$set1 = array ('a' => 1, 'b' => 1, );
$set2 = array ('b' => 1, 'c' => 1, );
$union = $set1 + $set2;
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