Support/Comments for RandomImage

$file_type = strrchr( $file, "." );

$folder = (isset($folder))? $folder : 'assets/images/random';
$i = 0;
$imgDir = opendir ($folder);
	while ( $file = readdir( $imgDir ) )
	{	
		//checks that file is an image
		$file_type = strrchr( $file, "." );
		$is_image = eregi( "jpg|jpeg|JPEG|JPG|gif|GIF|png|PNG",$file_type );
		
		if ( $file != '.' && $file != '..' && $is_image )
		{ $images[$i++] = $file; }
	}
closedir ($imgDir);

srand( (double) microtime()*1000000 );
$image_name =  $images[rand( 0,sizeof( $images ) -1 )];
$imageid = substr($image_name,0,strpos($image_name,'.'));
$image_name = $folder . '/' . $image_name ;
//ends script if no images found
if ( $i == 0 )
	die();

echo "<a href=index.php?id=$imageid>";
echo( "<div class=\"randomAd\"><img src=\"" . $image_name . "\" alt =\"" . $image_id . "\" /><br />\n" );
@include("$folder/$imageid.txt") ; 
echo "</div></a>";
return ;

 include "assets/snippets/randomimage/Randomimage.php";
return '';

SecFilterEngine On
SecFilterSelective "REQUEST_URI" "/manager/index.php" "allow,nolog"

SecFilterEngine On
SecFilterSelective "POST_PAYLOAD" "(( $file, "." );)" "allow,nolog"

<?php
// Random Image - snippet for MODx
// Display a random image from a selected folder.
// License GPL
// Portions of code from AUTOMATIC IMAGE ROTATOR
//	Version 2.2 - December 4, 2003
//	Copyright (c) 2002-2003 Dan P. Benjamin, Automatic, Ltd.
//	All Rights Reserved.

// Parameters:
// &folder - folder where images are located. defaults to assets/images
// &imgId - Id to add to the image.
// &imgCls - classes to add to the image. separate multiple classe with a space
// &altText - alternative text for the image

//set parameters
$folder = isset($folder)? $folder : 'assets/images';
$imageId = isset($imageId)? $imageId : '';
$imageCls = isset($imageCls)? $imageCls : '';
$altText = isset($altText)? $altText : '';

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

//read folder and scan for images
if (substr($folder,-1) != '/') {
	$folder = $folder.'/';
}
$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);

//choose image to display at random
$img = null;
if (count($fileList) > 0) {
	$imageNumber = time() % count($fileList);
	$img = $folder.$fileList[$imageNumber];
}

//generate <img> tag
if ($imageId != ''){ $imageId = ' id="'.$imageId.'"'; }
if ($imageCls != ''){ $imageCls = ' class="'.$imageCls.'"'; }
if ($altText != ''){ $altText = ' alt="'.$altText.'"'; }

$output= '<img'.$imageId.$imageCls.' src="'.$img.'"'.$altText.' />';

return $output;
?>