Does anyone know which algorithm in_array() uses?
For example, if I say
in_array("foo", $arr)
Does in_array() do an unordered sequential serach of $arr for
"foo" which takes up to n comparisons [where n = count($arr)],
or does it do a binary search which takes about lg(n) comparisons?
Is it up to me to maintain a sorted array in the later case?
Thanks,
John
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