Changing an Image Randomizer script to either do all images or just a select lis

[PraetorianGuard]

Hey

 

I found a nice Image Randomizer script but sadly it presently only proccesses all files in a single folder, which is good in some cases and bad in others. But i would like it to work like this:

 

1: I would add the link to the script file inside a couple of

[img][/img]

tags or

<img src"">

and then once the user would go and trigger the script the following would happen:

 

2: IF NO images had been manually specified, then the script must randomize all images present if the currrent or specified folder OR IF ANY images have been specified then it must randomize between those and only those

 

3: And then provide the feedback back to the users browser. But I have a script that works on the forums I need and the "output" method must not be changed or it might not work on the forum anymore.

 

But is there someone that can help with achieving this, and if anyone can, then i will proceed to paste the code required to be modified.

[PraetorianGuard]

This is the script I need modified:

 

<?php

/*

AUTOMATIC IMAGE ROTATOR
Version 2.2 - December 4, 2003
Copyright (c) 2002-2003 Dan P. Benjamin, Automatic, Ltd.
All Rights Reserved.

http://www.hiveware.com/imagerotator.php

http://www.automaticlabs.com/


DISCLAIMER
Automatic, Ltd. makes no representations or warranties about
the suitability of the software, either express or
implied, including but not limited to the implied
warranties of merchantability, fitness for a particular
purpose, or non-infringement. Dan P. Benjamin and Automatic, Ltd.
shall not be liable for any damages suffered by licensee
as a result of using, modifying or distributing this
software or its derivatives.


ABOUT
This PHP script will randomly select an image file from a
folder of images on your webserver.  You can then link to it
as you would any standard image file and you'll see a random
image each time you reload.

When you want to add or remove images from the rotation-pool,
just add or remove them from the image rotation folder.


VERSION CHANGES
Version 1.0
	- Release version

Version 1.5
	- Tweaked a few boring bugs

Version 2.0
	- Complete rewrite from the ground-up
	- Made it clearer where to make modifications
	- Made it easier to specify/change the rotation-folder
	- Made it easier to specify/change supported image types
	- Wrote better instructions and info (you're them reading now)
	- Significant speed improvements
	- More error checking
	- Cleaner code (albeit more PHP-specific)
	- Better/faster random number generation and file-type parsing
	- Added a feature where the image to display can be specified
	- Added a cool feature where, if an error occurs (such as no
	  images being found in the specified folder) *and* you're
	  lucky enough to have the GD libraries compiled into PHP on
	  your webserver, we generate a replacement "error image" on
	  the fly.

    Version 2.1
        - Updated a potential security flaw when value-matching
          filenames

    Version 2.2
        - Updated a few more potential security issues
        - Optimized the code a bit.
        - Expanded the doc for adding new mime/image types.

        Thanks to faithful ALA reader Justin Greer for
        lots of good tips and solid code contribution!


INSTRUCTIONS
1. Modify the $folder setting in the configuration section below.
2. Add image types if needed (most users can ignore that part).
3. Upload this file (rotate.php) to your webserver.  I recommend
   uploading it to the same folder as your images.
4. Link to the file as you would any normal image file, like this:

		<img src="http://example.com/rotate.php">

5. You can also specify the image to display like this:

		<img src="http://example.com/rotate.php?img=gorilla.jpg">

	This would specify that an image named "gorilla.jpg" located
	in the image-rotation folder should be displayed.

That's it, you're done.

*/




/* ------------------------- CONFIGURATION -----------------------


Set $folder to the full path to the location of your images.
For example: $folder = '/user/me/example.com/images/';
If the rotate.php file will be in the same folder as your
images then you should leave it set to $folder = '.';

*/


$folder = '.';


/*	

Most users can safely ignore this part.  If you're a programmer,
keep reading, if not, you're done.  Go get some coffee.

    If you'd like to enable additional image types other than
gif, jpg, and png, add a duplicate line to the section below
for the new image type.

Add the new file-type, single-quoted, inside brackets.

Add the mime-type to be sent to the browser, also single-quoted,
after the equal sign.

For example:

PDF Files:

	$extList['pdf'] = 'application/pdf';

    CSS Files:

        $extList['css'] = 'text/css';

    You can even serve up random HTML files:

    $extList['html'] = 'text/html';
    $extList['htm'] = 'text/html';

    Just be sure your mime-type definition is correct!

*/

    $extList = array();
$extList['gif'] = 'image/gif';
$extList['jpg'] = 'image/jpeg';
$extList['jpeg'] = 'image/jpeg';
$extList['png'] = 'image/png';


// You don't need to edit anything after this point.


// --------------------- END CONFIGURATION -----------------------

$img = null;

if (substr($folder,-1) != '/') {
$folder = $folder.'/';
}

if (isset($_GET['img'])) {
$imageInfo = pathinfo($_GET['img']);
if (
    isset( $extList[ strtolower( $imageInfo['extension'] ) ] ) &&
        file_exists( $folder.$imageInfo['basename'] )
    ) {
	$img = $folder.$imageInfo['basename'];
}
} else {
$fileList = array();
$handle = opendir($folder);
while ( false !== ( $file = readdir($handle) ) ) {
	$file_info = pathinfo($file);
	if (
	    isset( $extList[ strtolower( $file_info['extension'] ) ] )
	) {
		$fileList[] = $file;
	}
}
closedir($handle);

if (count($fileList) > 0) {
	$imageNumber = time() % count($fileList);
	$img = $folder.$fileList[$imageNumber];
}
}

if ($img!=null) {
$imageInfo = pathinfo($img);
$contentType = 'Content-type: '.$extList[ $imageInfo['extension'] ];
header ($contentType);
readfile($img);
} else {
if ( function_exists('imagecreate') ) {
	header ("Content-type: image/png");
	$im = @imagecreate (100, 100)
	    or die ("Cannot initialize new GD image stream");
	$background_color = imagecolorallocate ($im, 255, 255, 255);
	$text_color = imagecolorallocate ($im, 0,0,0);
	imagestring ($im, 2, 5, 5,  "IMAGE ERROR", $text_color);
	imagepng ($im);
	imagedestroy($im);
}
}

?>

[PraetorianGuard]

Anyone?