<?php 
# Returns a random image from the directory in which it is placed.
if ($handle = opendir('.')) {
    $imgs = array();
    $mimetypes = array(
        "bmp" => "image/bmp",
        "gif" => "image/gif",
        "jpg" => "image/jpeg",
        "jpeg" => "image/jpeg",
        "png" => "image/png",
        "tif" => "image/tiff",
        "tiff" => "image/tiff",
    );
    
    # Find the images in the current directory
    while (false !== ($file = readdir($handle))) {
        if (eregi('.(jpg|png|gif|tif|tiff|jpeg|bmp)',$file)) {
            $imgs[] = $file;
        }
    }
    closedir($handle);
    
    # If there are no images, display a suitable page.
    if (count($imgs) == 0) {
        header( 'Location: http://camvine.com/files/no_images.png') ;
        return;
    }

    # Pick a random image and return it
    shuffle($imgs);
    $img = $imgs[0];
    $bits = explode(".",$img);
    $ext = $bits[count($bits) - 1];
    header( 'Content-type: ' . $mimetypes[$ext] ) ;
    readfile($img);
}
?>