Description:
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https://bugs.php.net/bug.php?id=80336

You closed the issue not allowing any further comments. But i am not done.

You say

> This requires a lot of code changes and makes things 
> slower again as we most of the time don not know the 
> value of the $haystack

this is *not* true

Then please explain to me why do I get the error when the $haystack is empty?


Now i have to check the $haystack before calling strrpos. or strpos etc etc.


Test script:
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$haystack='';
$pos = strrpos($haystack, '.', -1);