Description:
------------
All code is in the reproduce section.

First, I create a php file with the "inc" extension
on my server root (http://localhost/www) and call it
"myinclude.inc".

Next, I create a regular php file (in the same location)
and call it "myscript.php".

I run myscript.php from my browser and I get the following:
------------------------------
in the include
YAY!
------------------------------

It works.

NOW: THE PROBLEM
I rename "myinclude.inc" to "myinclude.php".
I change line 2 of "myscript.php" accordingly.
I again run "myscript.php" from my browser and I get the
following:
----------------------
in the include
NAY!
----------------------

Obviously, require() and include() do not make the 
"myvar" variable persist. Also, when I declare functions in
an included file which HAS THE "PHP" EXTENSION, the
function cannot be called. However, as shown above, if I
use the "INC" or any other extension, everything works.

ANOTHER ODDITY
    Since the two files "myinclude.php" and "myscript.php"
are both in the same directory I tried not using the
"http://localhost/www" part in line 2 of "myscript.php".
IT WORKS. Why?

Please advise.
Thank you.

Other Information:
PHP Version = 4.3.2
Apache Version = 2.0.46




Reproduce code:
---------------
---myinclude.inc--------------
1: <?php
2: $myvar = 2;
3: print "in the include\n";
4: ?>
------------------------------

---myscript.php---------------
1: <?php
2: require("http://localhost/www/myinclude.inc");
3: if ($myvar == 2) print "YAY!";
4: else print "NAY!";
5: ?>
------------------------------

Expected result:
----------------
PLEASE SEE DESCRIPTION

---------
in the include
YAY!
---------

if i rename "myinclude.inc" to "myinclude.php"
and change "myscript.php" accordingly:

---------
in the include
NAY!
---------

Actual result:
--------------
PLEASE SEE DESCRIPTION