Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php |
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| 9 | class CRequestBasic |
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| 10 | { |
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| 11 | |||
| 12 | |||
| 13 | /** |
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| 14 | * Properties |
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| 15 | * |
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| 16 | */ |
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| 17 | private $requestUri; // Request URI from $_SERVER |
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| 18 | private $scriptName; // Scriptname from $_SERVER, actual scriptname part |
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| 19 | private $path; // Scriptname from $_SERVER, path-part |
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| 20 | |||
| 21 | private $route; // The route |
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| 22 | private $routeParts; // The route as an array |
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| 23 | |||
| 24 | |||
| 25 | private $currentUrl; // Current url |
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| 26 | private $siteUrl; // Url to this site, http://dbwebb.se |
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| 27 | private $baseUrl; // Url to root dir, siteUrl . /some/installation/directory/ |
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| 28 | |||
| 29 | private $server; // Mapped to $_SERVER |
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| 30 | private $get; // Mapped to $_GET |
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| 31 | private $post; // Mapped to $_POST |
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| 32 | |||
| 33 | |||
| 34 | |||
| 35 | /** |
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| 36 | * Constructor. |
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| 37 | * |
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| 38 | * |
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| 39 | */ |
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| 40 | public function __construct() |
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| 44 | |||
| 45 | |||
| 46 | |||
| 47 | /** |
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| 48 | * Read info from the globals. |
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| 49 | * |
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| 50 | * @param array $globals use to initiate globals with values. |
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| 51 | * |
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| 52 | * @return void |
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| 53 | */ |
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| 54 | public function setGlobals($globals = []) |
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| 60 | |||
| 61 | |||
| 62 | |||
| 63 | /** |
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| 64 | * Init the request class by reading information from the request. |
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| 65 | * |
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| 66 | * @return $this |
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| 67 | */ |
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| 68 | public function init() |
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| 88 | |||
| 89 | |||
| 90 | |||
| 91 | /** |
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| 92 | * Get site url. |
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| 93 | * |
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| 94 | * @return string |
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| 95 | */ |
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| 96 | public function getSiteUrl() |
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| 100 | |||
| 101 | |||
| 102 | |||
| 103 | /** |
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| 104 | * Get base url. |
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| 105 | * |
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| 106 | * @return string |
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| 107 | */ |
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| 108 | public function getBaseUrl() |
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| 112 | |||
| 113 | |||
| 114 | |||
| 115 | /** |
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| 116 | * Get script name. |
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| 117 | * |
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| 118 | * @return string |
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| 119 | */ |
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| 120 | public function getScriptName() |
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| 124 | |||
| 125 | |||
| 126 | |||
| 127 | /** |
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| 128 | * Get route parts. |
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| 129 | * |
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| 130 | * @return array |
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| 131 | */ |
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| 132 | public function getRouteParts() |
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| 136 | |||
| 137 | |||
| 138 | |||
| 139 | /** |
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| 140 | * Get the route. |
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| 141 | * |
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| 142 | * @return string as the current extracted route |
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| 143 | */ |
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| 144 | public function getRoute() |
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| 148 | |||
| 149 | |||
| 150 | |||
| 151 | /** |
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| 152 | * Extract the part containing the route. |
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| 153 | * |
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| 154 | * @return string as the current extracted route |
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| 155 | */ |
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| 156 | public function extractRoute() |
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| 197 | |||
| 198 | |||
| 199 | |||
| 200 | /** |
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| 201 | * Get the current url. |
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| 202 | * |
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| 203 | * @param boolean $queryString attach query string, default is true. |
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| 204 | * |
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| 205 | * @return string as current url. |
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| 206 | */ |
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| 207 | public function getCurrentUrl($queryString = true) |
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| 234 | |||
| 235 | |||
| 236 | |||
| 237 | /** |
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| 238 | * Get a value from the _SERVER array and use default if it is not set. |
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| 239 | * |
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| 240 | * @param string $key to check if it exists in the $_SERVER variable |
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| 241 | * @param string $default value to return as default |
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| 242 | * |
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| 243 | * @return mixed |
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| 244 | */ |
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| 245 | public function getServer($key, $default = null) |
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| 249 | |||
| 250 | |||
| 251 | |||
| 252 | /** |
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| 253 | * Set variable in the server array. |
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| 254 | * |
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| 255 | * @param mixed $key the key an the , or an key-value array |
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| 256 | * @param string $value the value of the key |
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| 257 | * |
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| 258 | * @return $this |
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| 259 | */ |
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| 260 | View Code Duplication | public function setServer($key, $value = null) |
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| 268 | |||
| 269 | |||
| 270 | |||
| 271 | /** |
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| 272 | * Get a value from the _GET array and use default if it is not set. |
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| 273 | * |
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| 274 | * @param string $key to check if it exists in the $_GET variable |
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| 275 | * @param string $default value to return as default |
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| 276 | * |
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| 277 | * @return mixed |
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| 278 | */ |
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| 279 | public function getGet($key, $default = null) |
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| 283 | |||
| 284 | |||
| 285 | |||
| 286 | /** |
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| 287 | * Set variable in the get array. |
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| 288 | * |
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| 289 | * @param mixed $key the key an the , or an key-value array |
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| 290 | * @param string $value the value of the key |
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| 291 | * |
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| 292 | * @return $this |
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| 293 | */ |
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| 294 | View Code Duplication | public function setGet($key, $value = null) |
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| 302 | |||
| 303 | |||
| 304 | |||
| 305 | /** |
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| 306 | * Get a value from the _POST array and use default if it is not set. |
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| 307 | * |
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| 308 | * @param string $key to check if it exists in the $_POST variable |
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| 309 | * @param string $default value to return as default |
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| 310 | * |
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| 311 | * @return mixed |
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| 312 | */ |
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| 313 | public function getPost($key = null, $default = null) |
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| 321 | } |
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| 322 |
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: