3 * A concrete HTTP request class to make HTTP requests more abstract
5 * @author Roland Haeder <webmaster@ship-simu.org>
7 * @copyright Copyright(c) 2007, 2008 Roland Haeder, this is free software
8 * @license GNU GPL 3.0 or any newer version
9 * @link http://www.ship-simu.org
11 * This program is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 class HttpRequest extends BaseFrameworkSystem implements Requestable {
26 * Array for the request data
28 private $requestData = array();
31 * Protected constructor
35 protected function __construct () {
36 // Call parent constructor
37 parent::__construct(__CLASS__);
39 // Set part description
40 $this->setObjectDescription("HTTP-Anfrage");
42 // Create unique ID number
43 $this->createUniqueID();
46 $this->removeNumberFormaters();
47 $this->removeSystemArray();
51 * Creates an instance of this class and prepares it a little
53 * @return $httpInstance An instance of this class
55 public final static function createHttpRequest () {
57 $httpInstance = new HttpRequest();
59 // Prepare the HTTP request data for usage
60 $httpInstance->prepareRequestData();
62 // Return the prepared instance
67 * Prepares the HTTP request data for usage by currently copying
68 * $_REQUEST into a private attribute. Later on we can add more
69 * things for initialization here.
73 public function prepareRequestData () {
74 // Copy the $_REQUEST array
75 $this->requestData = $_REQUEST;
79 * Checks wether a request element is set
80 * @param $element Name of the request element we want to check
81 * @return $isSet Wether the request element is set
82 * @throws MissingArrayElementsException Thrown if a request element is not set
84 public function isRequestElementSet ($element) {
85 // Is this element found?
86 if (!isset($this->requestData[$element])) {
87 // Then throw an exception
88 throw new MissingArrayElementsException(array($this, 'requestData', $element), self::EXCEPTION_MISSING_ELEMENT);
96 * Getter for request element or 'null' if the element was not found
98 * @param $element Name of the request element we want to check
99 * @return $value Value of the found request element or 'null' if the
100 * element was not found
102 public function getRequestElement ($element) {
107 if ($this->isRequestElementSet($element)) {
108 $value = $this->requestData[$element];
110 } catch (MissingArrayElementsException $e) {
114 // Return the element's value
119 * Wrapper method for array_key() function for the request data array
121 * @return $array An array containing all array keys to return
123 public function getParameterNames () {
124 return array_keys($this->requestData);
128 * Getter for a header element or 'null' if the header was not found
130 * @param $headerName Name of the header
131 * @return $headerValue Value of the header or 'null' if not found
133 public function getHeader ($headerName) {
134 // Default return value on error
137 // Construct the name
138 $name = 'HTTP_' . strtolower(str_replace('-', '_', $headerName));
140 // Does this header exist?
141 if (isset($_SERVER[$name])) {
142 $headerValue = $_SERVER[$name];