strpos does not search backwards on negative offset

Question

Update: I was looking at docs for strrpos thinking it was the docs for strpos. Sorry for the dumb mistake.

According to the docs, it says that when you provide a negative value as an offset argument, the function will start that many characters from the end of the string, searching backwards. It even shows this in Example #2. Why then can I not get this code to work properly?

$val = strpos('/imports/products/nin_avatar.png', '/', -2);

I am trying to get the index of the last forward slash in the string, yet it keeps returning false.. I've tried a couple different negative offsets, and none seem to work. Am I doing something wrong?

Answer 1

It seems it works as the OP intended now in a new version of PHP.

---

Historical answer

The PHP manual for strpos() says...

Unlike strrpos() and strripos(), the offset cannot be negative.

Source.

This would be more obvious if you developed with warnings enabled. In your development instance, use something like error_reporting(E_ALL).

Answer 2

Use strrpos instead of strpos.