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:
Complex classes like MetaManipulator 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 MetaManipulator, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 20 | class MetaManipulator  | 
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| 21 | { | 
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| 22 | const META_TITLE = 1;  | 
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| 23 | const META_DESCRIPTION = 2;  | 
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| 24 | const META_KEYWORDS = 3;  | 
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| 25 | const META_H1 = 4;  | 
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| 26 | |||
| 27 | /**  | 
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| 28 | * Currency  | 
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| 29 | * @var string  | 
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| 30 | */  | 
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| 31 | protected $CS;  | 
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| 32 | |||
| 33 | /**  | 
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| 34 | * ID  | 
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| 35 | * @var string  | 
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| 36 | */  | 
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| 37 | protected $ID;  | 
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| 38 | |||
| 39 | /**  | 
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| 40 | * Brand  | 
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| 41 | * @var string  | 
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| 42 | */  | 
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| 43 | protected $brand;  | 
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| 44 | |||
| 45 | /**  | 
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| 46 | * Category  | 
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| 47 | * @var string  | 
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| 48 | */  | 
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| 49 | protected $category;  | 
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| 50 | |||
| 51 | /**  | 
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| 52 | * @var int  | 
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| 53 | */  | 
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| 54 | protected $descLength;  | 
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| 55 | |||
| 56 | /**  | 
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| 57 | * @var string  | 
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| 58 | */  | 
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| 59 | protected $description;  | 
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| 60 | |||
| 61 | /**  | 
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| 62 | * @var array  | 
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| 63 | */  | 
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| 64 | protected $matching = [];  | 
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| 65 | |||
| 66 | /**  | 
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| 67 | * @var array  | 
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| 68 | */  | 
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| 69 | protected $metaArray = [];  | 
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| 70 | |||
| 71 | /**  | 
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| 72 | * @var string  | 
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| 73 | */  | 
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| 74 | protected $metaDescription;  | 
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| 75 | |||
| 76 | /**  | 
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| 77 | * @var string  | 
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| 78 | */  | 
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| 79 | protected $metaH1;  | 
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| 80 | |||
| 81 | /**  | 
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| 82 | * @var string  | 
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| 83 | */  | 
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| 84 | protected $metaKeywords;  | 
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| 85 | |||
| 86 | /**  | 
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| 87 | * @var string  | 
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| 88 | */  | 
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| 89 | protected $metaTitle;  | 
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| 90 | |||
| 91 | /**  | 
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| 92 | * @var SCategory|SBrands|SProducts|array|null  | 
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| 93 | */  | 
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| 94 | protected $model;  | 
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| 95 | |||
| 96 | /**  | 
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| 97 | * @var array  | 
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| 98 | */  | 
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| 99 | protected $morph = [];  | 
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| 100 | |||
| 101 | /**  | 
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| 102 | * @var string  | 
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| 103 | */  | 
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| 104 | protected $name;  | 
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| 105 | |||
| 106 | /**  | 
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| 107 | * @var int  | 
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| 108 | */  | 
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| 109 | protected $number;  | 
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| 110 | |||
| 111 | /**  | 
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| 112 | * @var string  | 
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| 113 | */  | 
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| 114 | protected $pageNumber;  | 
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| 115 | |||
| 116 | /**  | 
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| 117 | * Price  | 
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| 118 | * @var string  | 
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| 119 | */  | 
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| 120 | protected $price;  | 
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| 121 | |||
| 122 | /**  | 
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| 123 | * @var MetaStorage  | 
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| 124 | */  | 
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| 125 | protected $storage;  | 
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| 126 | |||
| 127 | /**  | 
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| 128 | * @var string  | 
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| 129 | */  | 
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| 130 | protected $wrapper = '%';  | 
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| 131 | |||
| 132 | /**  | 
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| 133 | * @var array  | 
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| 134 | */  | 
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| 135 | private $graments = ['ИМ', 'РД', 'ДТ', 'ВН', 'ТВ', 'ПР'];  | 
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| 136 | |||
| 137 | /**  | 
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| 138 | * method processing meta data  | 
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| 139 | * @var  | 
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| 140 | */  | 
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| 141 | private $phpMorphy;  | 
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| 142 | |||
| 143 | /**  | 
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| 144 | * MetaManipulator constructor.  | 
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| 145 | * @param SBrands|SCategory|SProducts|array $model  | 
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| 146 | * @param MetaStorage $storage  | 
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| 147 | * @throws Exception  | 
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| 148 | */  | 
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| 149 |     public function __construct($model, MetaStorage $storage) { | 
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| 188 | |||
| 189 | /**  | 
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| 190 | * @return array  | 
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| 191 | */  | 
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| 192 |     public function getGraments() { | 
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| 196 | |||
| 197 | /**  | 
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| 198 | * @return MetaStorage  | 
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| 199 | */  | 
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| 200 |     public function getStorage() { | 
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| 204 | |||
| 205 | /**  | 
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| 206 | * @param MetaStorage $storage  | 
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| 207 | */  | 
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| 208 |     public function setStorage($storage) { | 
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| 212 | |||
| 213 | /**  | 
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| 214 | * @param string $name  | 
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| 215 | * @param string $arguments  | 
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| 216 | * @return string  | 
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| 217 | */  | 
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| 218 |     public function __call($name, $arguments) { | 
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| 226 | |||
| 227 | /**  | 
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| 228 | * @param string $string  | 
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| 229 | * @param string $prev_string  | 
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| 230 | * @return null|string  | 
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| 231 | */  | 
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| 232 |     public function make($string, $prev_string) { | 
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| 253 | |||
| 254 | /**  | 
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| 255 | * @param string $string  | 
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| 256 | * @param int $part 1-6  | 
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| 257 | * @return string|null  | 
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| 258 | */  | 
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| 259 |     protected function morphing($string, $part) { | 
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| 301 | |||
| 302 | /**  | 
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| 303 | * @param object $paradigm  | 
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| 304 | * @param string $param  | 
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| 305 | * @param null|string $gramat  | 
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| 306 | * @return array  | 
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| 307 | */  | 
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| 308 |     private function getGrammensWord($paradigm, $param, $gramat = null) { | 
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| 331 | |||
| 332 | /**  | 
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| 333 | * @param string $word  | 
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| 334 | * @return array  | 
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| 335 | */  | 
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| 336 |     private function getTypeMany($word) { | 
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| 351 | |||
| 352 | /**  | 
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| 353 | * @param string $word  | 
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| 354 | * @param string $param  | 
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| 355 | * @return array  | 
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| 356 | */  | 
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| 357 |     private function getTypeSpeechWord($word, $param) { | 
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| 377 | |||
| 378 | /**  | 
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| 379 | * @param object $paradigm  | 
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| 380 | * @param array $param  | 
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| 381 | * @param string $word  | 
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| 382 | * @return string|null  | 
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| 383 | */  | 
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| 384 |     private function checkGrammat($paradigm, $param, $word) { | 
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| 407 | |||
| 408 | /**  | 
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| 409 | * @param phpMorphy $phpMorphy  | 
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| 410 | */  | 
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| 411 |     private function setPhpMorphy($phpMorphy) { | 
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| 415 | |||
| 416 | /**  | 
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| 417 | * @return phpMorphy  | 
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| 418 | */  | 
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| 419 |     private function getPhpMorphy() { | 
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| 423 | |||
| 424 | /**  | 
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| 425 | * @param string $string  | 
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| 426 | * @param integer $part  | 
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| 427 | * @param bool $ucFirst  | 
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| 428 | * @return array  | 
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| 429 | */  | 
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| 430 |     public function getMorph($string, $part, $ucFirst = false) { | 
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| 437 | |||
| 438 | /**  | 
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| 439 | * @param string $string  | 
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| 440 | * @param array $morph  | 
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| 441 | */  | 
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| 442 |     public function setMorph($string, $morph) { | 
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| 446 | |||
| 447 | /**  | 
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| 448 | * @param string $string  | 
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| 449 | * @return string  | 
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| 450 | */  | 
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| 451 |     protected function transliteration($string = '') { | 
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| 457 | |||
| 458 | /**  | 
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| 459 | * @return string  | 
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| 460 | */  | 
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| 461 |     public function getBrand() { | 
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| 465 | |||
| 466 | /**  | 
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| 467 | * @param string $brand  | 
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| 468 | */  | 
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| 469 |     public function setBrand($brand) { | 
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| 473 | |||
| 474 | /**  | 
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| 475 | * @return string  | 
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| 476 | */  | 
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| 477 |     public function getCS() { | 
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| 484 | |||
| 485 | /**  | 
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| 486 | * @param string $CS  | 
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| 487 | */  | 
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| 488 |     public function setCS($CS) { | 
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| 492 | |||
| 493 | /**  | 
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| 494 | * @return string  | 
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| 495 | */  | 
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| 496 |     public function getCategory() { | 
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| 500 | |||
| 501 | /**  | 
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| 502 | * @param string $category  | 
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| 503 | */  | 
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| 504 |     public function setCategory($category) { | 
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| 508 | |||
| 509 | /**  | 
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| 510 | * @return int  | 
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| 511 | */  | 
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| 512 |     public function getDescLength() { | 
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| 522 | |||
| 523 | /**  | 
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| 524 | * @param int $descLength  | 
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| 525 | */  | 
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| 526 |     public function setDescLength($descLength) { | 
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| 532 | |||
| 533 | /**  | 
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| 534 | * @return string  | 
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| 535 | */  | 
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| 536 |     public function getDescription() { | 
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| 543 | |||
| 544 | /**  | 
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| 545 | * @param string $description  | 
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| 546 | */  | 
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| 547 |     public function setDescription($description) { | 
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| 559 | |||
| 560 | /**  | 
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| 561 | * @return array|null|SBrands|SCategory|SProducts  | 
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| 562 | */  | 
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| 563 |     public function getModel() { | 
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| 567 | |||
| 568 | /**  | 
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| 569 | * @param array|null|SBrands|SCategory|SProducts $model  | 
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| 570 | */  | 
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| 571 |     public function setModel($model) { | 
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| 575 | |||
| 576 | /**  | 
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| 577 | * @return string  | 
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| 578 | */  | 
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| 579 |     public function getID() { | 
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| 586 | |||
| 587 | /**  | 
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| 588 | * @param string $ID  | 
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| 589 | */  | 
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| 590 |     public function setID($ID) { | 
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| 594 | |||
| 595 | /**  | 
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| 596 | * @return string  | 
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| 597 | */  | 
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| 598 |     public function getMetaDescription() { | 
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| 602 | |||
| 603 | /**  | 
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| 604 | * @param string $metaDescription  | 
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| 605 | */  | 
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| 606 |     public function setMetaDescription($metaDescription) { | 
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| 610 | |||
| 611 | /**  | 
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| 612 | * @return string  | 
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| 613 | */  | 
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| 614 |     public function getMetaH1() { | 
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| 618 | |||
| 619 | /**  | 
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| 620 | * @param string $metaH1  | 
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| 621 | */  | 
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| 622 |     public function setMetaH1($metaH1) { | 
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| 626 | |||
| 627 | /**  | 
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| 628 | * @return string  | 
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| 629 | */  | 
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| 630 |     public function getMetaKeywords() { | 
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| 634 | |||
| 635 | /**  | 
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| 636 | * @param string $metaKeywords  | 
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| 637 | */  | 
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| 638 |     public function setMetaKeywords($metaKeywords) { | 
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| 642 | |||
| 643 | /**  | 
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| 644 | * @return string  | 
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| 645 | */  | 
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| 646 |     public function getMetaTitle() { | 
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| 650 | |||
| 651 | /**  | 
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| 652 | * @param string $metaTitle  | 
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| 653 | */  | 
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| 654 |     public function setMetaTitle($metaTitle) { | 
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| 658 | |||
| 659 | /**  | 
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| 660 | * @return string  | 
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| 661 | */  | 
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| 662 |     public function getName() { | 
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| 669 | |||
| 670 | /**  | 
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| 671 | * @param string $name  | 
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| 672 | */  | 
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| 673 |     public function setName($name) { | 
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| 677 | |||
| 678 | /**  | 
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| 679 | * @return string  | 
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| 680 | */  | 
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| 681 |     public function getPageNumber() { | 
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| 685 | |||
| 686 | /**  | 
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| 687 | * @param string $pageNumber  | 
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| 688 | */  | 
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| 689 |     public function setPageNumber($pageNumber) { | 
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| 693 | |||
| 694 | /**  | 
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| 695 | * @return string  | 
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| 696 | */  | 
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| 697 |     public function getNumber() { | 
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| 704 | |||
| 705 | /**  | 
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| 706 | * @param string $number  | 
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| 707 | */  | 
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| 708 |     public function setNumber($number) { | 
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| 712 | |||
| 713 | /**  | 
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| 714 | * @return string  | 
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| 715 | */  | 
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| 716 |     public function getPrice() { | 
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| 720 | |||
| 721 | /**  | 
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| 722 | * @param string $price  | 
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| 723 | */  | 
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| 724 |     public function setPrice($price) { | 
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| 728 | |||
| 729 | /**  | 
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| 730 | * @return array<String>  | 
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| 731 | */  | 
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| 732 |     public function render() { | 
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| 768 | |||
| 769 | /**  | 
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| 770 | * @return string  | 
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| 771 | */  | 
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| 772 |     public function getWrapper() { | 
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| 776 | |||
| 777 | /**  | 
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| 778 | * @param string $wrapper  | 
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| 779 | */  | 
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| 780 |     public function setWrapper($wrapper) { | 
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| 784 | |||
| 785 | /**  | 
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| 786 | * @param string $key  | 
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| 787 | * @return bool|array  | 
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| 788 | */  | 
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| 789 |     public function getMatching($key) { | 
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| 793 | |||
| 794 | /**  | 
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| 795 | * @param string $key  | 
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| 796 | * @param string $value  | 
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| 797 | */  | 
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| 798 |     public function setMatching($key, $value) { | 
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| 802 | |||
| 803 | /**  | 
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| 804 | * @return array  | 
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| 805 | */  | 
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| 806 |     public function getMetaArray() { | 
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| 810 | |||
| 811 | /**  | 
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| 812 | * @param array $metaArray  | 
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| 813 | */  | 
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| 814 |     public function setMetaArray($metaArray) { | 
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| 822 | }  |