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();
	}
	
}