A small class used in some of my projects for handling or throwing HTTP errors.

HttpException.php

<?php
	class HttpException extends Exception
	{
		private $headers;

		public function __construct($code, $message = NULL, $headers = NULL)
		{
			$this->code = $code;
			$this->headers = $headers;
			parent::__construct(self::getStatusMessage($code) . ($message ? '<p>' . $message . '</p>' : ''), $code);
		}

		public function getHeaders()
		{
			return $this->headers;
		}

		public static function getStatusMessage($code)
		{
			switch ($code)
			{
				case 200: return 'OK';
				case 201: return 'Created';
				case 204: return 'No Content';
				case 400: return 'Bad request';
				case 401: return 'Unauthorized';
				case 403: return 'Forbidden';
				case 404: return 'Not Found';
				case 405: return 'Method not allowed';
				case 406: return 'Not Acceptable';
				case 409: return 'Conflict';
				case 411: return 'Length Required';
				case 413: return 'Request Entity Too Large';
				case 415: return 'Unsupported Media Type';
				case 423: return 'Locked';
				case 500: return 'Internal Server Error';
				case 501: return 'Not Implemented';
				case 503: return 'Service Unavailable';
				default: return '(Unknown error)';
			}
		}
	}
?>