PHP's docs claim that its array is optimized for use as "array, vector hash table, dictionary, collection, stack, queue, and probably more". Is this actually true (The optimized bit)? Or is it still just a pretty ok hash map implementation (also how does dict diff from hash?)
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Yes, it's something like either Python's list or ordereddict, depending on how you use it. It's idiomatic to take advantage of the stable insertion order when using it as a dict.
