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From Doug Lipman <>
Subject [users@httpd] SSI functions to compare dates?
Date Mon, 25 Jul 2005 04:49:17 GMT

I'm trying to use SSI (via XBitHack) to include a file or a bit of 
text in certain existing web pages only until a date I set in code. 
In other words, I want my pages to display certain text until an 
expiration date, and only until then. I know how to do this in PHP, 
but I don't want to have to rename my files from .html.

This is how I've approached the problem:

	<!--#set var="now_date" value="$DATE_LOCAL"-->
	<!--#set var="exp_date" value="[something goes here that is 
based on the date I want the include-file to stop appearing]"-->
	<!--#if expr='"now_date > exp_date"' -->
	<!--#include virtual="../../includes/" -->
	<!--#endif -->

Here are my questions:
1. In the third line above, would now_date (derived from DATE_LOCAL) 
be in Unix time? Or else in what form?
2. Is there a function I can call in the second line above to encode 
a date into Unix time (or whatever the answer is to my first 

Or, is there a better way to approach this problem?

I'm running Linux Red Hat 9 and Apache 2.0.42.


Doug Lipman

Doug Lipman, P.O. Box 521165, Tulsa, OK 74152
Phone: (918) 712-7336. Fax: (206) 202-7719. Toll-free: (888) 446-4738
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