内置对PHP集合的支持? [英] Built in support for sets in PHP?

问题描述

我正在寻找一种在php中创建数组的简单方法，该方法不允许重复的条目，但允许轻松组合其他集合或数组.

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.

我主要对语言中是否存在这样的功能感兴趣，因为编写自己的语言并不困难.我只是不想，如果不需要.

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，如果使用数组键而不是值，则可以确保没有重复项，这也可以轻松地将两个集".

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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