I have a php file lets say file1.php, that printing a variable, its dynamic numbers output that already always increasing, like private message numbers that coming or others :

PHP Code:

<?php
echo $variable
?>

i want to put that variable output, in another files page title, lets say file2.php or file3.html,
in the front of the another files page titles, and auto refresh every x seconds, maybe like this :

(1) - another text in the page title

after x seconds, get a private message

(2) - another text in the page title

after another x seconds, get another private message

(3) - another text in the page title

or its ok if just like this, only the variable, without the another text in the page title

(1)

please share your knowledge to make it, maybe using javascript, jquery or others

Well, you'll have to use javascript in order to change anything once the page is loaded. jQuery is also javascript, it's just a library that makes things easier.

Just changing the title is no big deal. If you want it to change upon some external events (like getting a PM) you'll have to include some ajax, that periodically (like every 10 seconds or so) calls some resource (like a php script) on the server to check if there are any new PM.

Ajax is pretty darn easy using jQuery, you'll find everything you need, including tutorials, on the jQuery website. And to make the call periodically, just search google for "javascript setInterval".

And of course by doing that stand a very good chance of crashing the browser after about five or ten minutes.

To do what you want without running out of browser resources on the client, you need to be using JAVA applets and servlets.

Originally Posted by chrishirst

And of course by doing that stand a very good chance of crashing the browser after about five or ten minutes.

You mean after making ajax request on a 10 seconds period and changing page title?

Im asking because i have a page on which im running 3 periodical requests (5, 10 and 20 seconds) and im pulling some heavy data.
But fortunately i have a 5 minute timeout so i can save some resources, i didn't tried without it but i never had a crash so far.
I did some testing to simulate "heavy" server load, say 70 requests in 10 seconds (i can't click faster ), all of them finished loading in about 200-350ms.

btw here's how to do it with mootools (not tested):

PHP Code:

var pageTitle = document.title;
var func_newPM = function() {
    var reqURL = 'file1.php';
    var AjaxReq = new Request({
        url: reqURL,
        method: 'get',
        onComplete: function(responseText) {
            document.title = "("+responseText+") - "+pageTitle;
        },
    });
    AjaxReq.send();
}
tCheckPM = func_newPM.periodical(10000); 


But fortunately i have a 5 minute timeout so i can save some resources, i didn't tried without it but i never had a crash so far.

Provide the "timeout" allows any resources to be released and/or reused.

It is not the request rate that can hog resources but the javascript objects that are created and in some instances cannot be reused, but never get released or destroyed, so each iteration creates new objects and eventually can/will run out of 'heap' space. It's mainly due to javascript being event driven.

Java on the other hand has much better 'garbage collection' processes that will release objects and memory when finished with.

Of corse, that's something im aware of.
If the objects keep piling up the browser will eventualy crash.
I mentioned multiple requests because, in my case, object creation depends on request rate.
If the user is inactive for 5 minutes all the requests stop and there is no more object creation.
If 10 objects need to be created i have a delay of 1s so i get a nice feed of data and enough time for browser to do it's thing and while the new objects are created, old ones are destroyed.

I believe java is better when you are operating with more information but changing page title for one page is not so demanding task so javascript can do it with no problems.