7 Jun
2011
7 Jun
'11
6:47 p.m.
Hi,
For some time I was curious whether PMA_STR_binarySearchInArr is
needed at all, and my test showed that there are faster (sometimes
much faster) alternatives. Test for 100 000 iterations on PHP 5.3.4
(Windows, i5 2,53 GHz core):
PMA_STR_binarySearchInArr: 2.6606s
array_search: 1.8936s
isset: 0.0102s
array_key_exists: 0.0934s
Isset and array_key_exists require flipped array, but array_search is
a drop-in replacement that works faster, even though it does a linear
search. Code used to perform this test is at [1].
[1] http://pastebin.com/cJmpmCPh
--
Piotr Przybylski