Re: Finding out when a Web page has changed

Hope the sites have no banners :), they change all the time John Holmes wrote:

You could cache/save the actual contents of the file, then when you read it next time, compare it to what you saved and see if it changed. You may want to filter out everything but what's between <body> and </body>, so you're not thinking it changed just b/c of something in the headers... ---John Holmes...

-----Original Message----- From: Vikram Vaswani [mailto:vikram@w-o-i.com] Sent: Thursday, September 26, 2002 7:04 AM To: php-general@lists.php.net Subject: [PHP] Finding out when a Web page has changed Hi all, I need to write an application that accepts a list of URLs and checks

them

on a daily basis (via cron) to see if the pages have changed in the

past

day. I need some help with this. Does anyone know the most optimal way to

find

out when a particular Web page has been modified? I am thinking about using the Last-Modified: HTTP header - however, all servers do not return

this

header - any ideas on what the fallback should be? TIA, Vikram -- "I find your lack of faith disturbing." --Darth Vader -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php