Description:
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Hi,

It appears that defined() is not catching a class lookup miss properly, and throwing a fatal error instead.

This is happening on a customer's 5.2.4 install. It works fine on my 5.2.3 install.

I haven't actually seen it for myself, but a customer told me that he is on php 5.2.4 and that he got this error:
[Wed Sep 19 09:20:17 2007] [error] [client 85.178.73.32] PHP Fatal error: Class '.. ' not found in /var/www/html/mb5/lib-action/include/smarty/core/plugins/modifier.constant.php on line 20

And that line is:
	if (defined($string)) {

The values of $string at that point was probably this:
".. :: 1000 MB Webspace :: 100 GB Traffic :: .."

Thank you,

Ben

Reproduce code:
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echo "<?php echo (int) defined('.. :: 1000 MB Webspace :: 100 GB Traffic :: ..'); " | php

Expected result:
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0

Actual result:
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PHP Fatal error: Class '.. ' not found