Complex classes like Client often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Client, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 10 | class Client |
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| 11 | { |
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| 12 | public $login; |
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| 13 | public $password; |
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| 14 | public $proxy; |
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| 15 | public $method = 'GET'; |
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| 16 | public $postDataInBody = false; |
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| 17 | public $useAuth = true; |
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| 18 | |||
| 19 | /** |
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| 20 | * @var ResponseInterface |
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| 21 | */ |
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| 22 | public $request; |
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| 23 | |||
| 24 | const TYPE_JSON = 'json'; |
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| 25 | const TYPE_XML = 'xml'; |
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| 26 | const TYPE_FORM = 'form'; |
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| 27 | |||
| 28 | protected $protocol = 'https'; |
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| 29 | protected $url = ''; |
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| 30 | protected $type = 'json'; |
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| 31 | protected $output_type; |
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| 32 | protected $_guzzleOptions = []; |
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| 33 | protected $_custom_guzzle_options = []; |
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| 34 | protected $_guzzle; |
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| 35 | protected $_errors; |
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| 36 | |||
| 37 | /** |
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| 38 | * Client constructor. |
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| 39 | * |
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| 40 | * @param array $config |
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| 41 | */ |
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| 42 | public function __construct(array $config = []) |
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| 50 | |||
| 51 | public function init() |
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| 58 | |||
| 59 | /** |
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| 60 | * @param bool $asString |
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| 61 | * @return string |
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| 62 | */ |
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| 63 | public function getError($asString = true) |
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| 74 | |||
| 75 | public function validate(array $data) |
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| 82 | |||
| 83 | /** |
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| 84 | * @param array $data |
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| 85 | * @return array |
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| 86 | */ |
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| 87 | public function filter(array $data) |
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| 97 | |||
| 98 | /** |
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| 99 | * @param $param |
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| 100 | * @param $value |
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| 101 | * @return mixed |
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| 102 | */ |
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| 103 | public function filterParam($param, $value) |
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| 107 | |||
| 108 | /** |
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| 109 | * @param $param |
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| 110 | * @param $value |
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| 111 | * @return bool |
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| 112 | */ |
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| 113 | public function validateParam($param, $value) |
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| 117 | |||
| 118 | public function setGuzzleOptions($array) |
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| 122 | |||
| 123 | /** |
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| 124 | * @param $url |
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| 125 | * @return string |
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| 126 | */ |
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| 127 | protected function buildUrl($url) |
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| 135 | |||
| 136 | /** |
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| 137 | * @return GuzzleClient |
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| 138 | */ |
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| 139 | public function getGuzzle() |
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| 143 | |||
| 144 | /** |
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| 145 | * @param $urlRequest |
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| 146 | * @param array $data |
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| 147 | * @return string|\stdClass|\SimpleXMLElement |
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| 148 | */ |
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| 149 | public function getContent($urlRequest, $data = []) |
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| 167 | |||
| 168 | /** |
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| 169 | * @param $data |
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| 170 | * @return mixed |
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| 171 | */ |
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| 172 | protected function unSerializeJson($data) |
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| 176 | |||
| 177 | /** |
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| 178 | * @param $data |
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| 179 | * @return \SimpleXMLElement |
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| 180 | */ |
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| 181 | protected function unSerializeXml($data) |
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| 185 | |||
| 186 | /** |
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| 187 | * @param $data |
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| 188 | * @return mixed|null|\SimpleXMLElement |
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| 189 | */ |
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| 190 | public function unSerialize($data) |
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| 204 | |||
| 205 | /** |
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| 206 | * @param $param |
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| 207 | * @param $message |
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| 208 | */ |
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| 209 | public function addError($param, $message) |
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| 213 | |||
| 214 | /** |
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| 215 | * @param array $data |
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| 216 | * @return array |
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| 217 | */ |
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| 218 | protected function beforePrepareData(array $data) |
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| 222 | |||
| 223 | /** |
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| 224 | * @param $data |
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| 225 | * @return string|array |
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| 226 | * @throws \Exception |
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| 227 | */ |
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| 228 | protected function prepareData(array $data) |
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| 254 | |||
| 255 | /** |
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| 256 | * @throws \Exception |
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| 257 | */ |
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| 258 | public function guzzleOptions() |
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| 285 | } |
PHP Analyzer performs a side-effects analysis of your code. A side-effect is basically anything that might be visible after the scope of the method is left.
Let’s take a look at an example:
If we look at the
getEmail()method, we can see that it has no side-effect. Whether you call this method or not, no future calls to other methods are affected by this. As such code as the following is useless:On the hand, if we look at the
setEmail(), this method _has_ side-effects. In the following case, we could not remove the method call: