image_view.class.php

<?php

private function outputImage($filepath){

        $info = UniteFunctionsRev::getPathInfo($filepath);
        $ext = $info["extension"];
        $filetime = filemtime($filepath);

        $ext = strtolower($ext);
        if($ext == "jpg")
                $ext = "jpeg";

        $allowed = array( "bmp", "gif", "jpeg", "png", "tga", "thm", "tif", "tiff" );
        if ( ! in_array( $ext, $allowed ) )
                exit();

        $numExpires = 31536000; //one year
        $strExpires = @date('D, d M Y H:i:s',time()+$numExpires);
        $strModified = @date('D, d M Y H:i:s',$filetime);

        $contents = file_get_contents($filepath);
        $filesize = strlen($contents);
        header("Last-Modified: $strModified GMT");
        header("Expires: $strExpires GMT");
        header("Cache-Control: public");
        header("Content-Type: image/$ext");
        header("Content-Length: $filesize");

        echo $contents;
        exit();
}

?>