Gerard Samuel wrote:
...
>>> Im trying to determine if md5() would be the fastest,
>>> *cheapest* solution.
...
> What Im looking for is something where the generated hashes can
> be reproduced.
> For example, md5('foo') today, will be equal to md5('foo') tomorrow.
> Thanks
AFAIK crc32() is the fastest hashing function in PHP. I don't have
actual results on hand still, but I created a filesystem plugin that
auto-generates hashes for each file in a directory. crc32() was faster
than md5() and sha1().
FYI the benchmarking that I did was for a Windows XP system... YMMV
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