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Change what Image is saved at a certain URL
Posted: Wed Jun 06, 2007 11:53 pm
by goodtimeshaxor
The best way to explain what I need to do is to give an example and here it is:
Say you have a site URL www. website. com/images/banner.gif
and you want the image stored at that URL to be randomly selected from a pool of 6 images:
/banner1.gif
/banner2.gif
/banner3.gif
/banner4.gif
/banner5.gif
/banner6.gif
When a viewer goes to www. website. com/images/banner.gif, one of the 6 banner images would be displayed at random. I know there are scripts out there that allow you to change which image is shown on an html or php page but I need something that will change what image is actually stored at a specific location on my web server.
I'm a beginner in PHP and cannot code this myself -_-;; Wondering if anyone could help me out with this.
Thanks in advance
Posted: Thu Jun 07, 2007 12:10 am
by feyd
Examples of this are fairly abundant.
Code: Select all
<?php
$image = 'example.jpg';
$im = imagecreatefromjpeg( $image );
ob_start();
imagejpeg($im, '', 100);
$len = ob_get_length();
$imagedata = ob_get_clean();
header( 'Content-type: image/jpeg' );
header( 'Content-length: ' . $len );
echo $imagedata;
?>
or
Code: Select all
<?php
$thursday = (date('w') == 4);
if($thursday or isset($_GET['pirate']))
{
$file = 'avatar_sized_pirate.png';
}
else
{
$file = 'avatar_sized.png';
}
header('Content-type: image/png');
header('Content-length: ' . filesize($file) );
readfile($file);
?>
aided by an .htaccess
Code: Select all
AddType application/x-httpd-php .gif .png .jpg .jpeg
yields

or

Posted: Thu Jun 07, 2007 11:25 pm
by goodtimeshaxor
feyd | Please use Code: Select all
and [syntax="..."] tags where appropriate when posting code. Your post has been edited to reflect how we'd like it posted. Please read: [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url] to learn how to do it too.[/color]
Hmm. I can't seem to get it to work and I don't exactly understand how it works either.
I have my images saved to:
http://www.l2luna.com/banner/banner.gif
http://www.l2luna.com/banner/banner1.gif
http://www.l2luna.com/banner/banner2.gif
and I have the first php code you gave to:
http://www.l2luna.com/banner/banner.php
Code: Select all
<?php
$image = 'banner.gif';
$im = imagecreatefromgif( $image );
ob_start();
imagegif($im, '', 2);
$len = ob_get_length();
$imagedata = ob_get_clean();
header( 'Content-type: image/gif' );
header( 'Content-length: ' . $len );
echo $imagedata;
?>
Some info: The image stored in banner.gif can be random or changed by time (in minutes). Not sure if that will affect the script. Those 4 files are all I have in side directory on the site.
feyd | Please use Code: Select all
and [syntax="..."] tags where appropriate when posting code. Your post has been edited to reflect how we'd like it posted. Please read: [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url] to learn how to do it too.[/color]
Posted: Mon Jun 11, 2007 8:20 am
by goodtimeshaxor
Still don't know whats wrong.. Anyone out there? =)
Posted: Mon Jun 11, 2007 2:49 pm
by feyd
imagegif() only accepts two parameters. Your call has three. What is the third one supposed to be?
Also, if you're not going to manipulate the images, you don't need to use the image functions.. you can simply pull in the file data using
file_Get_contents() or one of its equivalents.
Posted: Mon Jun 11, 2007 6:34 pm
by goodtimeshaxor
Ah. I just copied the PHP code that you showed me and assumed that the 100 meant how many images it ran through. I guess I assumed wrong (I should look at the syntax first before doing that).
Take a look at this directory:
http://www.l2revengeserver.com/banner/
I'm looking to do something like this:
http://www.l2revengeserver.com/banner/banner.gif
It should change every couple minutes.
(Again, thank you for your help. I appreciate it)