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 Arrayy 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 Arrayy, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 11 | class Arrayy extends CollectionMethods implements \Countable, \IteratorAggregate, \ArrayAccess |
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| 12 | { |
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| 13 | |||
| 14 | /** |
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| 15 | * @var array |
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| 16 | */ |
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| 17 | private $array = array(); |
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| 18 | |||
| 19 | /** |
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| 20 | * Initializes |
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| 21 | * |
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| 22 | * @param array $array |
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| 23 | */ |
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| 24 | 245 | public function __construct($array = array()) |
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| 25 | { |
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| 26 | 245 | if (!$array) { |
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| 27 | 52 | $array = array(); |
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| 28 | } |
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| 29 | |||
| 30 | if ( |
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| 31 | 245 | is_string($array) |
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| 32 | || |
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| 33 | 245 | (is_object($array) && method_exists($array, '__toString')) |
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| 34 | ) { |
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| 35 | 1 | $array = (array)$array; |
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| 36 | } |
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| 37 | |||
| 38 | 245 | if (!is_array($array)) { |
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| 39 | 2 | throw new \InvalidArgumentException( |
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| 40 | 2 | 'Passed value must be a array' |
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| 41 | ); |
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| 42 | } |
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| 43 | |||
| 44 | 243 | $this->array = $array; |
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| 45 | 243 | } |
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| 46 | |||
| 47 | /** |
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| 48 | * magic to string |
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| 49 | * |
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| 50 | * @return string |
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| 51 | */ |
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| 52 | 13 | public function __toString() |
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| 56 | |||
| 57 | /** |
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| 58 | * Get a data by key |
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| 59 | * |
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| 60 | * @param $key |
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| 61 | * |
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| 62 | * @return mixed |
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| 63 | */ |
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| 64 | public function &__get($key) |
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| 65 | { |
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| 66 | return $this->array[$key]; |
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| 67 | } |
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| 68 | |||
| 69 | /** |
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| 70 | * Assigns a value to the specified data |
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| 71 | * |
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| 72 | * @param $key |
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| 73 | * @param $value |
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| 74 | */ |
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| 75 | public function __set($key, $value) |
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| 76 | { |
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| 77 | $this->array[$key] = $value; |
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| 78 | } |
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| 79 | |||
| 80 | /** |
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| 81 | * Whether or not an data exists by key |
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| 82 | * |
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| 83 | * @param $key |
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| 84 | * |
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| 85 | * @return bool |
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| 86 | */ |
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| 87 | public function __isset($key) |
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| 88 | { |
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| 89 | return isset($this->array[$key]); |
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| 90 | } |
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| 91 | |||
| 92 | /** |
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| 93 | * Unsets an data by key |
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| 94 | * |
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| 95 | * @param mixed $key |
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| 96 | */ |
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| 97 | public function __unset($key) |
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| 98 | { |
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| 99 | unset($this->array[$key]); |
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| 100 | } |
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| 101 | |||
| 102 | /** |
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| 103 | * Assigns a value to the specified offset |
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| 104 | * |
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| 105 | * |
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| 106 | * @param mixed $offset |
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| 107 | * @param mixed $value |
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| 108 | */ |
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| 109 | public function offsetSet($offset, $value) |
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| 110 | { |
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| 111 | if (null === $offset) { |
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| 112 | $this->array[] = $value; |
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| 113 | } else { |
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| 114 | $this->array[$offset] = $value; |
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| 115 | } |
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| 116 | } |
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| 117 | |||
| 118 | /** |
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| 119 | * Whether or not an offset exists |
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| 120 | * |
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| 121 | * @param mixed $offset |
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| 122 | * |
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| 123 | * @return bool |
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| 124 | */ |
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| 125 | 4 | public function offsetExists($offset) |
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| 129 | |||
| 130 | /** |
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| 131 | * Unsets an offset |
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| 132 | * |
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| 133 | * @param mixed $offset |
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| 134 | */ |
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| 135 | public function offsetUnset($offset) |
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| 136 | { |
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| 137 | if ($this->offsetExists($offset)) { |
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| 138 | unset($this->array[$offset]); |
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| 139 | } |
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| 140 | } |
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| 141 | |||
| 142 | /** |
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| 143 | * Returns the value at specified offset |
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| 144 | * |
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| 145 | * @param mixed $offset |
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| 146 | * |
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| 147 | * @return null |
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| 148 | */ |
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| 149 | 4 | public function offsetGet($offset) |
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| 153 | |||
| 154 | /** |
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| 155 | * Returns a new ArrayIterator, thus implementing the IteratorAggregate |
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| 156 | * interface. |
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| 157 | * |
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| 158 | * @return \ArrayIterator An iterator for the values in the array |
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| 159 | */ |
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| 160 | 1 | public function getIterator() |
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| 164 | |||
| 165 | /** |
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| 166 | * call object as function |
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| 167 | * |
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| 168 | * @param mixed $key |
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| 169 | * |
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| 170 | * @return mixed |
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| 171 | */ |
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| 172 | public function __invoke($key = null) |
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| 173 | { |
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| 174 | if ($key !== null) { |
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| 175 | if (isset($this->array[$key])) { |
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| 176 | return $this->array[$key]; |
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| 177 | } else { |
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| 178 | return false; |
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| 179 | } |
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| 180 | } |
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| 181 | |||
| 182 | return (array)$this->array; |
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| 183 | } |
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| 184 | |||
| 185 | /** |
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| 186 | * get the current array from the "Arrayy"-object |
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| 187 | * |
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| 188 | * @return array |
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| 189 | */ |
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| 190 | 144 | public function getArray() |
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| 194 | |||
| 195 | /** |
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| 196 | * Creates a Arrayy object |
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| 197 | * |
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| 198 | * @param array $array |
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| 199 | * |
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| 200 | * @return self |
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| 201 | */ |
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| 202 | 185 | public static function create($array = array()) |
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| 206 | |||
| 207 | //////////////////////////////////////////////////////////////////// |
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| 208 | ///////////////////////////// ANALYZE ////////////////////////////// |
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| 209 | //////////////////////////////////////////////////////////////////// |
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| 210 | |||
| 211 | /** |
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| 212 | * Search for the value of the current array via $index. |
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| 213 | * |
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| 214 | * @param mixed $index |
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| 215 | * |
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| 216 | * @return self |
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| 217 | */ |
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| 218 | 7 | public function searchValue($index) |
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| 219 | { |
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| 220 | // init |
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| 221 | 7 | $return = array(); |
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| 222 | |||
| 223 | 7 | if (null !== $index) { |
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| 224 | 7 | $keyExists = isset($this->array[$index]); |
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| 225 | |||
| 226 | 7 | if ($keyExists !== false) { |
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| 227 | 5 | $return = array($this->array[$index]); |
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| 228 | } |
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| 229 | } |
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| 230 | |||
| 231 | 7 | return self::create((array)$return); |
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| 232 | } |
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| 233 | |||
| 234 | /** |
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| 235 | * Search for the index of the current array via $value. |
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| 236 | * |
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| 237 | * @param mixed $value |
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| 238 | * |
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| 239 | * @return self |
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| 240 | */ |
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| 241 | 7 | public function searchIndex($value) |
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| 242 | { |
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| 243 | 7 | $key = array_search($value, $this->array, true); |
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| 244 | |||
| 245 | 7 | if ($key === false) { |
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| 246 | 2 | $return = array(); |
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| 247 | } else { |
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| 248 | 5 | $return = array($key); |
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| 249 | } |
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| 250 | |||
| 251 | 7 | return self::create((array)$return); |
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| 252 | } |
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| 253 | |||
| 254 | /** |
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| 255 | * Check if all items in an array match a truth test. |
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| 256 | * |
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| 257 | * @param \Closure $closure |
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| 258 | * |
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| 259 | * @return bool |
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| 260 | */ |
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| 261 | 8 | View Code Duplication | public function matches(\Closure $closure) |
| 274 | |||
| 275 | /** |
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| 276 | * Check if any item in an array matches a truth test. |
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| 277 | * |
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| 278 | * @param \Closure $closure |
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| 279 | * |
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| 280 | * @return bool |
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| 281 | */ |
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| 282 | 8 | View Code Duplication | public function matchesAny(\Closure $closure) |
| 295 | |||
| 296 | /** |
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| 297 | * Check if an item is in an array. |
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| 298 | * |
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| 299 | * @param mixed $value |
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| 300 | * |
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| 301 | * @return bool |
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| 302 | */ |
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| 303 | 9 | public function contains($value) |
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| 307 | |||
| 308 | /** |
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| 309 | * Returns the average value of an array. |
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| 310 | * |
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| 311 | * @param int $decimals The number of decimals to return |
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| 312 | * |
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| 313 | * @return int The average value |
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| 314 | */ |
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| 315 | 10 | public function average($decimals = null) |
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| 316 | { |
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| 317 | 10 | $count = $this->count(); |
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| 318 | |||
| 319 | 10 | if (!$count) { |
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| 320 | 2 | return 0; |
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| 321 | } |
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| 322 | |||
| 323 | 8 | if (!is_int($decimals)) { |
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| 324 | 3 | $decimals = null; |
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| 325 | } |
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| 326 | |||
| 327 | 8 | return round(array_sum($this->array) / $count, $decimals); |
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| 328 | } |
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| 329 | |||
| 330 | /** |
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| 331 | * Count the values from the current array. |
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| 332 | * |
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| 333 | * INFO: only a alias for "$arrayy->size()" |
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| 334 | * |
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| 335 | * @return int |
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| 336 | */ |
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| 337 | public function length() |
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| 338 | { |
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| 339 | return $this->size(); |
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| 340 | } |
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| 341 | |||
| 342 | /** |
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| 343 | * Count the values from the current array. |
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| 344 | * |
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| 345 | * INFO: only a alias for "$arrayy->size()" |
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| 346 | * |
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| 347 | * @return int |
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| 348 | */ |
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| 349 | 40 | public function count() |
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| 353 | |||
| 354 | /** |
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| 355 | * Get the size of an array. |
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| 356 | * |
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| 357 | * @return int |
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| 358 | */ |
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| 359 | 40 | public function size() |
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| 363 | |||
| 364 | /** |
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| 365 | * Get the max value from an array. |
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| 366 | * |
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| 367 | * @return mixed |
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| 368 | */ |
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| 369 | 10 | public function max() |
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| 377 | |||
| 378 | /** |
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| 379 | * Get the min value from an array. |
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| 380 | * |
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| 381 | * @return mixed |
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| 382 | */ |
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| 383 | 10 | public function min() |
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| 391 | |||
| 392 | //////////////////////////////////////////////////////////////////// |
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| 393 | //////////////////////////// FETCH FROM //////////////////////////// |
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| 394 | //////////////////////////////////////////////////////////////////// |
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| 395 | |||
| 396 | /** |
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| 397 | * Find the first item in an array that passes the truth test, |
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| 398 | * otherwise return false |
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| 399 | * |
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| 400 | * @param \Closure $closure |
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| 401 | * |
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| 402 | * @return mixed|false false if we couldn't find the value |
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| 403 | */ |
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| 404 | 7 | public function find(\Closure $closure) |
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| 405 | { |
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| 406 | 7 | foreach ($this->array as $key => $value) { |
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| 407 | 5 | if ($closure($value, $key)) { |
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| 408 | 5 | return $value; |
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| 409 | } |
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| 410 | } |
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| 411 | |||
| 412 | 3 | return false; |
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| 413 | } |
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| 414 | |||
| 415 | /** |
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| 416 | * Clean all falsy values from an array. |
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| 417 | * |
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| 418 | * @return self |
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| 419 | */ |
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| 420 | 7 | public function clean() |
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| 428 | |||
| 429 | /** |
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| 430 | * Get a random string from an array. |
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| 431 | * |
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| 432 | * @param null $take |
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| 433 | * |
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| 434 | * @return self |
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| 435 | */ |
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| 436 | 5 | public function random($take = null) |
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| 437 | { |
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| 438 | 5 | if ($take !== null) { |
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| 439 | return $this->array[array_rand($this->array)]; |
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| 440 | } |
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| 441 | |||
| 442 | 5 | shuffle($this->array); |
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| 443 | |||
| 444 | 5 | return $this->first($take); |
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| 445 | } |
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| 446 | |||
| 447 | /** |
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| 448 | * Return an array with all elements found in input array. |
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| 449 | * |
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| 450 | * @param array $search |
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| 451 | * |
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| 452 | * @return self |
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| 453 | */ |
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| 454 | 2 | public function intersection(array $search) |
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| 458 | |||
| 459 | /** |
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| 460 | * Return a boolean flag which indicates whether the two input arrays have any common elements. |
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| 461 | * |
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| 462 | * @param array $search |
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| 463 | * |
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| 464 | * @return bool |
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| 465 | */ |
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| 466 | 1 | public function intersects(array $search) |
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| 470 | |||
| 471 | //////////////////////////////////////////////////////////////////// |
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| 472 | ///////////////////////////// SLICERS ////////////////////////////// |
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| 473 | //////////////////////////////////////////////////////////////////// |
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| 474 | |||
| 475 | /** |
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| 476 | * Get the first value from an array. |
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| 477 | * |
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| 478 | * @param int|null $take |
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| 479 | * |
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| 480 | * @return self |
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| 481 | */ |
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| 482 | 27 | public function first($take = null) |
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| 483 | { |
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| 484 | 27 | if ($take === null) { |
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| 485 | 13 | $array = array_shift($this->array); |
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| 486 | } else { |
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| 487 | 14 | $array = array_splice($this->array, 0, $take, true); |
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| 488 | } |
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| 489 | |||
| 490 | 27 | return self::create((array)$array); |
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| 491 | } |
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| 492 | |||
| 493 | /** |
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| 494 | * Get the last value from an array. |
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| 495 | * |
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| 496 | * @param int|null $take |
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| 497 | * |
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| 498 | * @return self |
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| 499 | */ |
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| 500 | 10 | public function last($take = null) |
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| 501 | { |
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| 502 | 10 | if ($take === null) { |
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| 503 | 7 | $array = self::create((array)array_pop($this->array)); |
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| 504 | } else { |
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| 505 | 3 | $array = $this->rest(-$take); |
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| 506 | } |
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| 507 | |||
| 508 | 10 | return $array; |
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| 509 | } |
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| 510 | |||
| 511 | /** |
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| 512 | * Get everything but the last..$to items. |
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| 513 | * |
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| 514 | * @param int $to |
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| 515 | * |
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| 516 | * @return self |
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| 517 | */ |
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| 518 | 10 | public function initial($to = 1) |
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| 524 | |||
| 525 | /** |
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| 526 | * Get the last elements from index $from. |
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| 527 | * |
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| 528 | * @param int $from |
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| 529 | * |
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| 530 | * @return self |
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| 531 | */ |
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| 532 | 13 | public function rest($from = 1) |
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| 536 | |||
| 537 | //////////////////////////////////////////////////////////////////// |
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| 538 | ///////////////////////////// ACT UPON ///////////////////////////// |
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| 539 | //////////////////////////////////////////////////////////////////// |
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| 540 | |||
| 541 | /** |
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| 542 | * Iterate over an array and execute a callback for each loop. |
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| 543 | * |
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| 544 | * @param \Closure $closure |
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| 545 | * |
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| 546 | * @return mixed |
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| 547 | */ |
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| 548 | 1 | View Code Duplication | public function at(\Closure $closure) |
| 549 | { |
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| 550 | 1 | $array = $this->array; |
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| 551 | |||
| 552 | 1 | foreach ($array as $key => $value) { |
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| 553 | 1 | $closure($value, $key); |
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| 554 | } |
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| 555 | |||
| 556 | 1 | return self::create($array); |
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| 557 | } |
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| 558 | |||
| 559 | //////////////////////////////////////////////////////////////////// |
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| 560 | ////////////////////////////// ALTER /////////////////////////////// |
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| 561 | //////////////////////////////////////////////////////////////////// |
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| 562 | |||
| 563 | /** |
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| 564 | * Merge the new $array into the current array, replace already existing keys |
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| 565 | * from the current array with the key,values from the new $array |
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| 566 | * and create new indexes. |
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| 567 | * |
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| 568 | * @param array $array |
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| 569 | * |
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| 570 | * @return self |
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| 571 | */ |
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| 572 | 8 | public function mergeAppendNewIndex(array $array = array()) |
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| 576 | |||
| 577 | /** |
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| 578 | * Merge the current array into the new $array, replace already existing keys |
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| 579 | * from new $array with the key,values from the current array |
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| 580 | * and create new indexes. |
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| 581 | * |
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| 582 | * @param array $array |
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| 583 | * |
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| 584 | * @return self |
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| 585 | */ |
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| 586 | public function mergePrependNewIndex(array $array = array()) |
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| 587 | { |
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| 588 | return self::create(array_merge($array, $this->array)); |
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| 589 | } |
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| 590 | |||
| 591 | /** |
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| 592 | * Merge the new $array into the current array and |
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| 593 | * keep keys and values from the current array. |
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| 594 | * |
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| 595 | * @param array $array |
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| 596 | * |
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| 597 | * @return self |
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| 598 | */ |
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| 599 | public function mergeAppendKeepIndex(array $array = array()) |
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| 604 | |||
| 605 | /** |
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| 606 | * Merge the the current array into the $array, keep keys and values from the new $array. |
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| 607 | * |
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| 608 | * @param array $array |
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| 609 | * |
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| 610 | * @return self |
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| 611 | */ |
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| 612 | public function mergePrependKeepIndex(array $array = array()) |
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| 617 | |||
| 618 | /** |
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| 619 | * Merge the new $array into the current array, keep keys from the current array |
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| 620 | * and overwrite values with the new $array. |
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| 621 | * |
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| 622 | * @param $array |
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| 623 | * |
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| 624 | * @return self |
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| 625 | */ |
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| 626 | public function mergeReplaceAppend(array $array = array()) |
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| 630 | |||
| 631 | /** |
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| 632 | * Merge the the current array into the $array, keep keys from the new $array |
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| 633 | * and overwrite values with the old from the current array. |
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| 634 | * |
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| 635 | * @param $array |
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| 636 | * |
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| 637 | * @return self |
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| 638 | */ |
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| 639 | public function mergeReplacePrepend(array $array = array()) |
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| 643 | |||
| 644 | /** |
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| 645 | * Return values that are only in the current array. |
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| 646 | * |
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| 647 | * @param array $array |
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| 648 | * |
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| 649 | * @return self |
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| 650 | */ |
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| 651 | public function diff(array $array = array()) |
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| 655 | |||
| 656 | /** |
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| 657 | * Return values that are only in the new $array. |
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| 658 | * |
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| 659 | * @param array $array |
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| 660 | * |
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| 661 | * @return self |
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| 662 | */ |
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| 663 | public function diffReverse(array $array = array()) |
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| 667 | |||
| 668 | /** |
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| 669 | * Replace the first matched value in an array. |
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| 670 | * |
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| 671 | * @param string $search The string to replace |
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| 672 | * @param string $replacement What to replace it with |
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| 673 | * |
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| 674 | * @return self |
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| 675 | */ |
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| 676 | 3 | public function replaceOneValue($search, $replacement = '') |
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| 687 | |||
| 688 | /** |
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| 689 | * Replace values in an array. |
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| 690 | * |
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| 691 | * @param string $search The string to replace |
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| 692 | * @param string $replacement What to replace it with |
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| 693 | * |
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| 694 | * @return self |
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| 695 | */ |
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| 696 | 1 | public function replaceValues($search, $replacement = '') |
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| 706 | |||
| 707 | /** |
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| 708 | * Replace the keys in an array with another set. |
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| 709 | * |
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| 710 | * @param array $keys An array of keys matching the array's size |
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| 711 | * |
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| 712 | * @return self |
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| 713 | */ |
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| 714 | 1 | public function replaceKeys(array $keys) |
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| 720 | |||
| 721 | /** |
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| 722 | * Iterate over an array and modify the array's value. |
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| 723 | * |
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| 724 | * @param \Closure $closure |
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| 725 | * |
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| 726 | * @return array |
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| 727 | */ |
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| 728 | 18 | View Code Duplication | public function each(\Closure $closure) |
| 738 | |||
| 739 | /** |
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| 740 | * Shuffle an array. |
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| 741 | * |
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| 742 | * @return self |
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| 743 | */ |
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| 744 | 1 | public function shuffle() |
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| 752 | |||
| 753 | /** |
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| 754 | * Sort an array by key. |
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| 755 | * |
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| 756 | * @param string $direction |
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| 757 | * |
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| 758 | * @return self |
||
| 759 | */ |
||
| 760 | 8 | public function sortKeys($direction = 'ASC') |
|
| 779 | |||
| 780 | /** |
||
| 781 | * Implodes an array. |
||
| 782 | * |
||
| 783 | * @param string $with What to implode it with |
||
| 784 | * |
||
| 785 | * @return string |
||
| 786 | */ |
||
| 787 | 21 | public function implode($with = '') |
|
| 791 | |||
| 792 | /** |
||
| 793 | * Find all items in an array that pass the truth test. |
||
| 794 | * |
||
| 795 | * @param null $closure |
||
| 796 | * |
||
| 797 | * @return self |
||
| 798 | */ |
||
| 799 | 8 | public function filter($closure = null) |
|
| 809 | |||
| 810 | /** |
||
| 811 | * Invoke a function on all of an array's values. |
||
| 812 | * |
||
| 813 | * @param mixed $callable |
||
| 814 | * @param array $arguments |
||
| 815 | * |
||
| 816 | * @return self |
||
| 817 | */ |
||
| 818 | 1 | public function invoke($callable, $arguments = array()) |
|
| 834 | |||
| 835 | /** |
||
| 836 | * Return all items that fail the truth test. |
||
| 837 | * |
||
| 838 | * @param \Closure $closure |
||
| 839 | * |
||
| 840 | * @return self |
||
| 841 | */ |
||
| 842 | 1 | View Code Duplication | public function reject(\Closure $closure) |
| 854 | |||
| 855 | /** |
||
| 856 | * Remove the first value from an array. |
||
| 857 | * |
||
| 858 | * @return self |
||
| 859 | */ |
||
| 860 | 8 | public function removeFirst() |
|
| 866 | |||
| 867 | /** |
||
| 868 | * Remove the last value from an array. |
||
| 869 | * |
||
| 870 | * @return self |
||
| 871 | */ |
||
| 872 | 7 | public function removeLast() |
|
| 878 | |||
| 879 | /** |
||
| 880 | * Removes a particular value from an array (numeric or associative). |
||
| 881 | * |
||
| 882 | * @param mixed $value |
||
| 883 | * |
||
| 884 | * @return self |
||
| 885 | */ |
||
| 886 | 7 | public function removeValue($value) |
|
| 904 | |||
| 905 | /** |
||
| 906 | * Prepend a value to an array. |
||
| 907 | * |
||
| 908 | * @param mixed $value |
||
| 909 | * |
||
| 910 | * @return self |
||
| 911 | */ |
||
| 912 | 7 | public function prepend($value) |
|
| 918 | |||
| 919 | /** |
||
| 920 | * Append a value to an array. |
||
| 921 | * |
||
| 922 | * @param mixed $value |
||
| 923 | * |
||
| 924 | * @return self |
||
| 925 | */ |
||
| 926 | 8 | public function append($value) |
|
| 932 | |||
| 933 | /** |
||
| 934 | * Return the array in the reverse order. |
||
| 935 | * |
||
| 936 | * @return self |
||
| 937 | */ |
||
| 938 | 7 | public function reverse() |
|
| 944 | |||
| 945 | /** |
||
| 946 | * duplicate free copy of an array |
||
| 947 | * |
||
| 948 | * @return self |
||
| 949 | */ |
||
| 950 | 7 | public function unique() |
|
| 966 | } |
||
| 967 |
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.