$allPics = 6;
for($picNumb = 1; $picNumb <= $allPics; $picNumb++)
{
 
$fileName = '{Fahrzeugbild'.$picNumb.':filename}';
 
list($replace, $with) = RSFormProHelper::getReplacements($SubmissionId);
$fileName = str_replace($replace, $with, $fileName);
 
/*
 * Resize and center crop an arbitrary size image to fixed width and height
 * e.g. convert a large portrait/landscape image to a small square thumbnail
 */
 
define('DESIRED_IMAGE_WIDTH', 108);
define('DESIRED_IMAGE_HEIGHT', 72);
 
/* $source_path = $_FILES['Image1']['tmp_name']; */
$source_path = $_SERVER['DOCUMENT_ROOT'].'/xxxxxxxxxxxxxxx/components/com_rsform/uploads/fahrzeuge/'.$fileName;
 
/*
 * Add file validation code here
 */
 
list($source_width, $source_height, $source_type) = getimagesize($source_path);
 
switch ($source_type) {
    case IMAGETYPE_GIF:
        $source_gdim = imagecreatefromgif($source_path);
        break;
    case IMAGETYPE_JPEG:
        $source_gdim = imagecreatefromjpeg($source_path);
        break;
    case IMAGETYPE_PNG:
        $source_gdim = imagecreatefrompng($source_path);
        break;
}
 
$source_aspect_ratio = $source_width / $source_height;
$desired_aspect_ratio = DESIRED_IMAGE_WIDTH / DESIRED_IMAGE_HEIGHT;
 
if ($source_aspect_ratio > $desired_aspect_ratio) {
    /*
     * Triggered when source image is wider
     */
    $temp_height = DESIRED_IMAGE_HEIGHT;
    $temp_width = ( int ) (DESIRED_IMAGE_HEIGHT * $source_aspect_ratio);
} else {
    /*
     * Triggered otherwise (i.e. source image is similar or taller)
     */
    $temp_width = DESIRED_IMAGE_WIDTH;
    $temp_height = ( int ) (DESIRED_IMAGE_WIDTH / $source_aspect_ratio);
}
 
/*
 * Resize the image into a temporary GD image
 */
 
$temp_gdim = imagecreatetruecolor($temp_width, $temp_height);
imagecopyresampled(
    $temp_gdim,
    $source_gdim,
    0, 0,
    0, 0,
    $temp_width, $temp_height,
    $source_width, $source_height
);
 
/*
 * Copy cropped region from temporary image into the desired GD image
 */
 
$x0 = ($temp_width - DESIRED_IMAGE_WIDTH) / 2;
$y0 = ($temp_height - DESIRED_IMAGE_HEIGHT) / 2;
$desired_gdim = imagecreatetruecolor(DESIRED_IMAGE_WIDTH, DESIRED_IMAGE_HEIGHT);
imagecopy(
    $desired_gdim,
    $temp_gdim,
    0, 0,
    $x0, $y0,
    DESIRED_IMAGE_WIDTH, DESIRED_IMAGE_HEIGHT
);
 
header('Content-type: image/jpeg');
/* imagejpeg($desired_gdim); */
 
/* save pic to destination folder */
imagejpeg( $desired_gdim, $_SERVER['DOCUMENT_ROOT'].'/xxxxxxxxxxxxxxxxx/components/com_rsform/uploads/fahrzeuge/thumbs/'.$fileName );
}