Description:
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I have found a "bug" on page function.array-pop.html

I read:

If array is empty (or is not an array), NULL will be returned. 

But there is a warning about FALSE:

This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE, such as 0 or "". Please read the section on Booleans for more information. Use the === operator for testing the return value of this function.

So, I know, that this warning is exists in man of function that on failure return (boolean)FALSE but can return (integer)0 that equal (in == sense) to FALSE.

I think, that this warning is not needed on this page.

Reproduce code:
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http://us2.php.net/manual/en/function.array-pop.php

Expected result:
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There is no Warning about FALSE.

Actual result:
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Warning about FALSE