iwarner
asked on
PHP Loading Bar
I have a time consuming PHP script.
While this is loading I want a DHTML, Javascript, FLASH bar to show the progress of the script.
When the script is finshed it will then show the contents.
Regards
Ian
While this is loading I want a DHTML, Javascript, FLASH bar to show the progress of the script.
When the script is finshed it will then show the contents.
Regards
Ian
justaphase
hmm that is a good question...
ASKER
Ca you answer it - it may not be possible - as PHP is server side and the other elements are client side - so I want the server to continuously talk to the client - ie by giving time instructions but not effect the script at all!
yes u right, that's why all the examples i know are javascript or xml.... let me see if i can arranje something...
ASKER
Would be cool if you could I have no clue on Javasctipt or really anything apart from PHP and SQL
E:)
E:)
i'm not to good in javascript either, just a few lights...
well... i have two examples that could help...
should i put the full codes?
well... i have two examples that could help...
should i put the full codes?
or should i create a temp url in my server showing the codes?...
ASKER
temp url please wanna see it in action
E :)
E :)
ASKER CERTIFIED SOLUTION
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ASKER
Hi,
Ok that seems to do the trick - now I need the Javascript or DHTML bar that will adjust depending on how much time is left to download the script can this be done?
Testing Script below:
<html>
<head>
<title>Please wait, working....</title>
<script language="JavaScript">
<!--
// This function wont be invoved until the complete page is loaded.
function Loaded()
{
document.getElementById("l
document.title = "My nice title";
}
//-->
</script>
</head>
<body onLoad="Loaded()">
<div id="loader" style="background-color: #990000;color:#ffffff">Ple
rest of the page here...
<?php
flush(); //Make sure that the data isnt cached in PHP.
// HEAVY SCRIPT EXAMPLE GOES HERE
FOR($i = 0; $i <= 10; $i++)
{
fopen('http://www.yahoo.com', 'r');
}
?>
</body>
</html>
E:)
Ok that seems to do the trick - now I need the Javascript or DHTML bar that will adjust depending on how much time is left to download the script can this be done?
Testing Script below:
<html>
<head>
<title>Please wait, working....</title>
<script language="JavaScript">
<!--
// This function wont be invoved until the complete page is loaded.
function Loaded()
{
document.getElementById("l
document.title = "My nice title";
}
//-->
</script>
</head>
<body onLoad="Loaded()">
<div id="loader" style="background-color: #990000;color:#ffffff">Ple
rest of the page here...
<?php
flush(); //Make sure that the data isnt cached in PHP.
// HEAVY SCRIPT EXAMPLE GOES HERE
FOR($i = 0; $i <= 10; $i++)
{
fopen('http://www.yahoo.com', 'r');
}
?>
</body>
</html>
E:)
Well. Ask in the html or javascript forums.
hmm i have this example here that have a progress bar in javascript... dunno if can aply to that...
http://www.xiscopia.com/tmp/injava.htm
http://www.xiscopia.com/tmp/injava.htm
Hi.
Seems like you have a proplem with the solution above...
You will never know the progress in your "Heavy SCRIPT" part.
For example... you do something that takes 10 sec first time... and 25 seconds the next... how do you control the speed of the progress bar?
Current status is hard to communicate from the server-side to the client :(
Just a thought...
// J
Ps. There is a way if you use frames and the serverside execution is made in several steps...
Then you could have a hidden frame that are doing the server-side execution and updating the vissible frames (passing parameter to the progress bar control, DHTML) after each step...
If you have one large time consuming task, then it's much harder.
Seems like you have a proplem with the solution above...
You will never know the progress in your "Heavy SCRIPT" part.
For example... you do something that takes 10 sec first time... and 25 seconds the next... how do you control the speed of the progress bar?
Current status is hard to communicate from the server-side to the client :(
Just a thought...
// J
Ps. There is a way if you use frames and the serverside execution is made in several steps...
Then you could have a hidden frame that are doing the server-side execution and updating the vissible frames (passing parameter to the progress bar control, DHTML) after each step...
If you have one large time consuming task, then it's much harder.
ASKER
Yes thats similar to what I said in my second comment.
How does it continuously talk to the client about the server side script.
Can you make a demo of what you suggested?
Many people have been asking for something similar I think.
E:)
How does it continuously talk to the client about the server side script.
Can you make a demo of what you suggested?
Many people have been asking for something similar I think.
E:)
I'd recommend having an <img src="progress_bar.php" width="400" height="30" /> on your page. While the PHP script executes, it writes its progress to a flat file, by writing a number from 0 to 100.
progress_bar.php is a php script that generates a dynamic graphic based on the contents of this progress file. The larger the number, the larger the 'done' portion of the graphic.
Then, use a javascript to periodically refresh the <img> src, appending a get argument to prevent the browser from caching it, something like this:
<script language="javascript">
function updateProgressBar() {
document.myImage.src="prog
}
</script>
Then set the updateProgressBar() javascript function to execute every 1 or 2 seconds using the setInterval() javascript call.
progress_bar.php is a php script that generates a dynamic graphic based on the contents of this progress file. The larger the number, the larger the 'done' portion of the graphic.
Then, use a javascript to periodically refresh the <img> src, appending a get argument to prevent the browser from caching it, something like this:
<script language="javascript">
function updateProgressBar() {
document.myImage.src="prog
}
</script>
Then set the updateProgressBar() javascript function to execute every 1 or 2 seconds using the setInterval() javascript call.
Try a flush(); at several spots in your code so it will output what it can as it becomes available. Readers then don't notice so much. NOTE- anything inside a table will not output until it sees the close table html tag so flush() wont help in that situation.
ASKER
Guys I expected a fully working example for 250 points - maybe its just me and Im too demanding.
I have started to create something along the lines of shmert's offering and verifier's.
E:)
I have started to create something along the lines of shmert's offering and verifier's.
E:)
SOLUTION
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btw, heres a working example of that:
http://churchoftux.com/jscript.php
and for a much more complex example of this kind of thing...
http://churchoftux.com/hlwebtv2/ (slightly bandwidth taxing)
http://churchoftux.com/jscript.php
and for a much more complex example of this kind of thing...
http://churchoftux.com/hlwebtv2/ (slightly bandwidth taxing)
Hi,
You could do it with PHP and a couple of flush()'s. Every now and then, you output a period (.) or a image or something, then when the page is complete, the javvascript should hide it the <div>
<html><head>
<script language="javascript">
function Loaded()
{
document.getElementById("l
}
</script>
</head>
<body onLoad="Loaded()">
<div id="loader">
<?php
echo str_repeat(" ", 500);
flush();
// Some work
echo '.';
flush();
/* This prints a dot to the screen, while still loading */
// More work
echo '.';
flush();
// More...
echo '.';
flush();
echo '.';
flush();
echo '.';
flush();
// etc...
?>
</div>
All you normal content here...
</body></html>
You could do it with PHP and a couple of flush()'s. Every now and then, you output a period (.) or a image or something, then when the page is complete, the javvascript should hide it the <div>
<html><head>
<script language="javascript">
function Loaded()
{
document.getElementById("l
}
</script>
</head>
<body onLoad="Loaded()">
<div id="loader">
<?php
echo str_repeat(" ", 500);
flush();
// Some work
echo '.';
flush();
/* This prints a dot to the screen, while still loading */
// More work
echo '.';
flush();
// More...
echo '.';
flush();
echo '.';
flush();
echo '.';
flush();
// etc...
?>
</div>
All you normal content here...
</body></html>
ASKER
Dragged on to long this question if anyone has anymore input then please let me know