{GET_RANDOM_ALIAS_IMG_URL:image-path}

<?php
/********************************************
titel:          {GET_RANDOM_ALIAS_IMG_URL} Replacement-Tag
description:    {GET_RANDOM_ALIAS_IMG_URL:image-path}
    This Replacement-Tag is based on {RANDOM} tag. It started as a mixup of
    tinoos adapted random code and pepes strip-prefix.php. It creates the
    path info of random pictures related to your point of view in a website
    (like "picture/Image/structure- aliasname/pic1.png".
    This tag can be used at places like table background where no <img>-tag is required.
---------------------------------------------
example:    {GET_RANDOM_ALIAS_IMG_URL:picture/Image} or
        <table style="background-image: url ({GET_RANDOM_ALIAS_IMG_URL:picture/Image});"
        or even <img src="{GET_RANDOM_ALIAS_IMG_URL:picture/Image}"> in an "HTML" contentpart.
        <a href="link-to-somewhere"><img src="{GET_RANDOM_ALIAS_IMG_URL:picture/Image}" border="0"></a>
---------------------------------------------
    The directories "alias1" "alias2" ... are subdirectories of picture/Image
    (you have to create them according to your given aliases "alias1" "alias2"...
    in admin/site structure).
    The complete path to the random pictures is then:
    www.yourdomain.com/picture/Image/alias1/
    www.yourdomain.com/picture/Image/alias2/
    and so on.
    The advantage of defining the alias-dirs in "picture/Image" is that this dir is used by fckeditor
    and you then can upload pictures per FTP and/or per fckeditor.
    It will deliver the pictures of the appropriately defined dir according to where
    you are in the site.
---------------------------------------------
notice:    name this file get_random_alias_img_url.php and copy it to
        phpwcms_template/inc_script/frontend_render
---------------------------------------------
authors:    tinoo, pepe(starter), RCS robin c. sherwood    (adapting and mixing up the code)
last modified:  23.01.2006 created/mixed up
********************************************/
// ----------------------------------------------------------------
// obligate check for phpwcms constants
if (!defined('PHPWCMS_ROOT')) {
   die("You Cannot Access This Script Directly, Have a Nice Day."); }
// ----------------------------------------------------------------
 
function get_random_image_url_based_on_alias($path)
{
// returns a random image url from the given path
// it looks for image of following type: gif, jpg, jpeg, png
    $alias = $GLOBALS['content']['struct'][($GLOBALS['aktion'][0])]['acat_alias'];
    $mypath = ($path."/".$alias);
    $imgArray = array();
    $imgpath = str_replace("//", "/", PHPWCMS_ROOT."/".$mypath."/");
    $imageinfo = false;
    if(is_dir($imgpath)) {
        $handle = opendir( $imgpath );
        while($file = readdir( $handle )) {
            if( $file != "." && $file != ".." ) {
            if( preg_match('/(\.jpg|\.jpeg|\.gif|\.png)$/', strtolower($file)) ) $imgArray[] = $file;
            }
        }
        closedir( $handle );
    }
    if(sizeof($imgArray)) $imageinfo = is_random_image($imgArray, $imgpath);
    return ($imageinfo) ?   "".$mypath."/".$imageinfo["imagename"]: "";
}
    $content["all"] = preg_replace('/\{GET_RANDOM_ALIAS_IMG_URL:(.*?)\}/ie', 'get_random_image_url_based_on_alias("$1");', $content["all"]);
?>