Re: [PHP] PHP Smart Refresh for looping server lookups
You can use a hidden iframe that would regularly refresh and if new messages are waiting send some javascript. In this javascript use DOM functions to insert the new message into the page. [EMAIL PROTECTED] wrote: This may sound a bit long and drawn out, but I'll try my best to summarize what I'm having trouble with. Roughly 2 weeks ago I began writing scripts to run a free TagBoard service. (Examples: Tag-Board.com and [mine] MyTagBoard.com) - my 2-week-long goal was to compile a list of features (based on 3 or 4 tagboard sites) and add those to this set of scripts. I was successful in pretty much all the features and more, except for one: Smart Refresh. The tagboards currently refresh at a rate of xx seconds, set by the tagboard owner. Other sites have managed to design the tagboard to refresh ONLY when a new tag exists on the server, simulating a live chat. My question is, how is this Smart Refresh done? How does a page that's loaded, just sit there and still be able to take a peek at the server without just refreshing the whole page? It's mind-boggling, even for me. :-D I'm not looking for actual code; that part I can do; I'm just looking for a basic what does what procedure on how it's done. Any thoughts on this would be very greatful! Thanks in advance =) ~ Tim -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] PHP Smart Refresh for looping server lookups
This may sound a bit long and drawn out, but I'll try my best to summarize what I'm having trouble with. Roughly 2 weeks ago I began writing scripts to run a free TagBoard service. (Examples: Tag-Board.com and [mine] MyTagBoard.com) - my 2-week-long goal was to compile a list of features (based on 3 or 4 tagboard sites) and add those to this set of scripts. I was successful in pretty much all the features and more, except for one: Smart Refresh. The tagboards currently refresh at a rate of xx seconds, set by the tagboard owner. Other sites have managed to design the tagboard to refresh ONLY when a new tag exists on the server, simulating a live chat. My question is, how is this Smart Refresh done? How does a page that's loaded, just sit there and still be able to take a peek at the server without just refreshing the whole page? It's mind-boggling, even for me. :-D I'm not looking for actual code; that part I can do; I'm just looking for a basic what does what procedure on how it's done. Any thoughts on this would be very greatful! Thanks in advance =) ~ Tim
Re: [PHP] PHP Smart Refresh for looping server lookups
in the past people have talked about doing this in a few different ways. 1. Have an image that javascript refreshes the url on and when doing so calls to a php script that checks to see if anything is newer then the last time that it checked. And if something has ben updated then have the php script pass back an image that is a different size (height or width) then what the image was be for. Then if the size of the image return is something other then what you expect, then you can assume that it the data has been changed and you need to refresh the entire page. 2. You could use a hidden IFRAME to do the checking. 3. You could write an app in Flash the opens a port to the server and does all the same checking the option #1 would be doing. 4. not sure, but I'm sure that others will have different options. Jim Lucas - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, September 20, 2003 4:40 PM Subject: [PHP] PHP Smart Refresh for looping server lookups This may sound a bit long and drawn out, but I'll try my best to summarize what I'm having trouble with. Roughly 2 weeks ago I began writing scripts to run a free TagBoard service. (Examples: Tag-Board.com and [mine] MyTagBoard.com) - my 2-week-long goal was to compile a list of features (based on 3 or 4 tagboard sites) and add those to this set of scripts. I was successful in pretty much all the features and more, except for one: Smart Refresh. The tagboards currently refresh at a rate of xx seconds, set by the tagboard owner. Other sites have managed to design the tagboard to refresh ONLY when a new tag exists on the server, simulating a live chat. My question is, how is this Smart Refresh done? How does a page that's loaded, just sit there and still be able to take a peek at the server without just refreshing the whole page? It's mind-boggling, even for me. :-D I'm not looking for actual code; that part I can do; I'm just looking for a basic what does what procedure on how it's done. Any thoughts on this would be very greatful! Thanks in advance =) ~ Tim -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
