<?php
/****************************************************
 * Name: RandomImage
 * Version 0.3.1
 * Desc: returns the name of a random image file
 * Author: Thomas Jakobi - Kontakt
 * Date: 28. May. 2008
 *
 * Usage: [!RandomImage!]
 * 
 * Parameters:
 * folder: folder to search for the random image (defaults to 'assets/images/header')
 * defaultImage: default image if no image is found (defaults to 'blank.gif')
 * ***************************************************/
 
$folder = (isset ( $folder )) ? $folder : 'assets/images/header';
$defaultImage = (isset ( $defaultImage )) ? $defaultImage : 'blank.gif';
$i = 0;
$imgDir = opendir ( $folder );
while ( $file = readdir ( $imgDir ) ) {
	//checks that file is an image
	$file_type = strrchr ( $file, "." );
	$is_image = eregi ( "jpg|gif", $file_type );
	$is_thumb = ! strncmp ( $file, '.thumb_', 7 );
	if ($file != '.' && $file != '..' && $is_image && !$is_thumb)
		$images [$i ++] = $file;
}
closedir ( $imgDir );
if ($i == 0)
	return ($defaultImage);
srand ( ( double ) microtime () * 1000000 );
$image_name = $folder . '/' . $images [rand ( 0, sizeof ( $images ) - 1 )];
return ($image_name);
?>