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 * Wether this request is valid and can be further processed
33 private $requestIsValid = false;
36 * Protected constructor
40 protected function __construct () {
41 // Call parent constructor
42 parent::__construct(__CLASS__);
44 // Set part description
45 $this->setObjectDescription("HTTP-Anfrage");
47 // Create unique ID number
48 $this->createUniqueID();
51 $this->removeNumberFormaters();
52 $this->removeSystemArray();
56 * Creates an instance of this class and prepares it a little
58 * @return $httpInstance An instance of this class
60 public final static function createHttpRequest () {
62 $httpInstance = new HttpRequest();
64 // Prepare the HTTP request data for usage
65 $httpInstance->prepareRequestData();
67 // Return the prepared instance
72 * Prepares the HTTP request data for usage by currently copying
73 * $_REQUEST into a private attribute. Later on we can add more
74 * things for initialization here.
78 public function prepareRequestData () {
79 // Copy the $_REQUEST array
80 $this->requestData = $_REQUEST;
84 * Checks wether a request element is set
85 * @param $element Name of the request element we want to check
86 * @return $isSet Wether the request element is set
87 * @throws MissingArrayElementsException Thrown if a request element is not set
89 public function isRequestElementSet ($element) {
90 // Is this element found?
91 if (!isset($this->requestData[$element])) {
92 // Then throw an exception
93 throw new MissingArrayElementsException(array($this, 'requestData', $element), self::EXCEPTION_MISSING_ELEMENT);
101 * Getter for request element or 'null' if the element was not found
103 * @param $element Name of the request element we want to check
104 * @return $value Value of the found request element or 'null' if the
105 * element was not found
107 public function getRequestElement ($element) {
112 if ($this->isRequestElementSet($element)) {
113 $value = $this->requestData[$element];
115 } catch (MissingArrayElementsException $e) {
119 // Return the element's value
124 * Wrapper method for array_key() function for the request data array
126 * @return $array An array containing all array keys to return
128 public function getParameterNames () {
129 return array_keys($this->requestData);
133 * Getter for a header element or 'null' if the header was not found
135 * @param $headerName Name of the header
136 * @return $headerValue Value of the header or 'null' if not found
138 public function getHeader ($headerName) {
139 // Default return value on error
142 // Construct the name
143 $name = 'HTTP_' . strtolower(str_replace('-', '_', $headerName));
145 // Does this header exist?
146 if (isset($_SERVER[$name])) {
147 $headerValue = $_SERVER[$name];
155 * Getter for request method. This getter might be useful for security filters
157 * @return $requestMethod Used request method
159 public final function getRequestMethod () {
160 return $_SERVER['REQUEST_METHOD'];
164 * Sets wether the request was valid (default: true)
166 * @param $isValid Wether the request is valid
169 public final function requestIsValid ($isValid = true) {
170 $this->requestIsValid = (bool) $isValid;