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by aruggirello
4194 days ago
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> arrays (aka maps) are basically used for everything. This is interesting. In fact, I believe object properties share the same mechanism as associative arrays, that is, $a->b will actually lookup the hash of "b" in $a. Does this new hashtable layout influence object properties/methods too? That would be huge! |
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Not sure, but I don't think so. Ppl often think object properties and arrays are much alike, but the array's HashTable struct and the object's store struct are very different. The main performance gains are not about the buckets (which are simple and quite alike) but the array's hashtable idea.
Often objects (php>=5.4) have a better performance than arrays; arrays have an undefined length while with good code, all object properties are defined at compile time. Because of this, you don't need to store the data in a hashtable. Nikic has a post about this subject too: https://gist.github.com/nikic/5015323