Description:
------------
I have a class called "Subject" which I use for a long time now, but when I tried to use the code with 5.1b2 I got:

Fatal error: Cannot redeclare class subject...

Simple renaming the class to MailSubject fixes the problem. But I did not redeclare this class, I did a search like "grep -ir subject *"

I tried some test-scrips:

<?php
var_dump(class_exists('Subject'));
?>

bool(false)


<?php
Test {}
class Subject {
}
?>
Fatal error: Cannot redeclare class subject in /var/www/localhost/htdocs/subject.php on line 3


<?php
Test {}
class Subject extends Test {
}
?>

Fatal error: Cannot redeclare class subject in /var/www/localhost/htdocs/subject.php on line 4


(If I extend, error is found in line 4, not 3 ?!). I'm using Apache-sapi with Apache 1.3.33.

Reproduce code:
---------------
<?php
class Subject {}
?>

Expected result:
----------------
empty page

Actual result:
--------------
Fatal error: Cannot redeclare class subject in /var/www/localhost/htdocs/subject.php on line 2