or 
(to resize).
Change $config["systempath"] to the path where the images are stored (not the URL and no slash on the end).
Change $config["webpath"] to the path where the images can be found through a webbrowser (include a ending slash).
The options for $config["type"] are "redirect" and "readfile". Redirect will use a "location" header wich will display the image (kind of redirect so). Readfile will read the file from the local hardrive and directly displayed (actually I can not recommend that).
////////////////////////////////////////////////////////////////////////////////////////*/
$config["systempath"] = "randomfoto2";
$config["webpath"] = "randomfoto2/";
$config["type"] = "redirect";
if($config["systempath"] != "")
{
$dircheck = $config["systempath"];
if (is_dir($dircheck)) //check if it is a valid systempath
{
$pathtoread = $config["systempath"];
}
else
{
// If not, it creates an error image and displays it
$img = imagecreate(150, 150);
$red = imagecolorallocate($img, 255, 0, 0);
$yellow = imagecolorallocate($img, 255,255, 0);
imagestring($img, 4, 20, 20, "System", $yellow);
imagestring($img, 4, 20, 40, "path", $yellow);
imagestring($img, 4, 20, 60, "error!", $yellow);
imagepng($img);
imagedestroy($img);
exit();
}
}
else
{
$pathtoread = "."; //Dir where this file is stored
}
if($config["webpath"] != "")
{
$url = $config["webpath"];
}
else
{
$explode = explode("/",$_SERVER["REQUEST_URI"]);
$url = "http://".$_SERVER["SERVER_NAME"]."/";
for($i=0;$i<(count($explode)-1);$i++)
{
$url.=$explode[$i]."/";
}
}
$imgdir = opendir($pathtoread);
while($file = readdir($imgdir))
{
$images[count($images)] = $file; //search all files
}
closedir ($imgdir);
// Removes all non-image files
$tempvar = 0;
for ($i = 0; $images[$i]; $i++)
{
$ext = strtolower(substr($images[$i],-4));
if ($ext == ".jpg" || $ext == ".gif" || $ext == "jpeg" || $ext== ".png" )
{
$images1[$tempvar] = $images[$i];
$tempvar++;
}
}
//Get a random image
$randomnr = rand(0, count($images1)-1);
$img = $images1[$randomnr];
//To resize a image
if(isset($tnsize))
{
$tnsize = (integer) $tnsize;
if (($tnsize < 20) || ($tnsize > 300))
{
// If not, it creates an error image and displays it
$img = imagecreate(150, 150);
$red = imagecolorallocate($img, 255, 0, 0);
$yellow = imagecolorallocate($img, 255,255, 0);
imagestring($img, 4, 20, 20, "Afmetingen", $yellow);
imagestring($img, 4, 20, 40, "kloppen", $yellow);
imagestring($img, 4, 20, 60, "niet!", $yellow);
imagepng($img);
imagedestroy($img);
exit();
}
if ($ext == ".jpg" || $ext == "jpeg")
{
$bigimage = @imagecreatefromjpeg($img);
}
if ($ext == ".gif")
{
$bigimage = @imagecreatefromgif($img);
}
if ($ext == ".png" || $ext == "jpeg")
{
$bigimage = @imagecreatefrompng($img);
}
//Create an empty image of the given size
$tnimage = imagecreate($tnsize, $tnsize);
$darkblue = imagecolorallocate($tnimage, 0,0, 127);
imagecolortransparent($tnimage,$darkblue);
//Calculate the resizing image factor
$sz = getimagesize($img);
$x = $sz[0];
$y = $sz[1];
if ($x > $y)
{
$dx = 0;
$w = $tnsize;
$h = ($y / $x) * $tnsize;
$dy = ($tnsize - $h) / 2;
}
else
{
$dy = 0;
$h = $tnsize;
$w = ($x / $y) * $tnsize;
$dx = ($tnsize - $w) / 2;
}
// Resizes the image
imagecopyresized($tnimage, $bigimage, $dx, $dy, 0, 0, $w, $h,$x, $y);
// Displays the image
imagepng($tnimage);
// Clears the variables
imagedestroy($tnimage);
imagedestroy($bigimage);
}
else
{
if($config["type"]=="redirect"){
header("Location: ".$url.$img);
}
else if($config["type"]=="readfile"){
readfile($pathtoread."/".$img);
}
else
{
echo "Error: unknown displaytype";
}
}
$img =1;
?>