用PHP表示一组位的最快方法？(Fastest way to represent a collection of bits in PHP?)

用PHP表示一组位的最快方法？(Fastest way to represent a collection of bits in PHP?)

代表一组比特的好方法是什么？

我有一组各种开/关切换（成千上万）并需要存储和检索其状态。 天真的实现将是一组布尔值，但我想知道是否有更好的方法（更好的访问速度和/或内存要求）。

我发现这个BitArray的实现，但是它限于32位，这对于这种情况是不够的。

What is a good way to represent a collection of bits?

I have a set of various on/off toggles (thousands of them) and need to store and retrieve their state. The naïve implementation would be an array of booleans, but I'm wondering if there's a better way (better in terms of access speed and/or memory requirements).

I've found this BitArray implementation, but it's limited to 32 bits, which is not enough for this case.

最满意答案

另一个选择是将它们以整数存储在PHP_INT_SIZE*8块中，并使用按位运算符来设置/取消设置它们。

我不能评论这种方法的速度或内存消耗，你可能需要做一些基准测试。

Another option is to store them in blocks of PHP_INT_SIZE*8 in integers and use bitwise operators to set/unset them.

I can't comment on speeds or memory consumption of this method, you may have to do some benchmarking.