Dr4g

session_start();if(!isset($_SESSION['alive'])) {	header("Location: sess_err.htm");	exit();} else {	if(is_uploaded_file($_FILES['avatar']['tmp_name'])) {		$ext_array = array('jpg', 'jpeg', 'png', 'gif');		if (in_array(strtolower(strrchr($_FILE['avatar']['name'], '.')), $ext_array)) {							$file_name = $_FILES['avatar']['name'];			$file_name_tmp = $_FILES['avatar']['tmp_name'];					$file_size = $_FILES['avatar']['size'];							$uploaddir = "../images/avatar/";			$uploadfile = $uploaddir . $file_name;						if(move_uploaded_file($file_name_tmp, $uploadfile))				echo "Image Successfully Uploaded!";			else				echo "Image Not Uploaded, Possible Attack Detected!";		} else {			echo "Image Type Not Supported";		}		} else {		echo "No Image To Process.";		exit();	}	}