| Total Complexity | 61 | 
| Total Lines | 448 | 
| Duplicated Lines | 0 % | 
| Changes | 0 | ||
Complex classes like Arr 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.
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 Arr, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
            ||
| 8 | class Arr  | 
            ||
| 9 | { | 
            ||
| 10 | /**  | 
            ||
| 11 | * Add an element to an array using "dot" notation if it doesn't exist.  | 
            ||
| 12 | *  | 
            ||
| 13 | * @param array $array  | 
            ||
| 14 | * @param string $key  | 
            ||
| 15 | * @param mixed $value  | 
            ||
| 16 | *  | 
            ||
| 17 | * @return array  | 
            ||
| 18 | */  | 
            ||
| 19 | public static function add(array $array, $key, $value)  | 
            ||
| 20 |     { | 
            ||
| 21 |         if (is_null(static::get($array, $key))) { | 
            ||
| 22 | static::set($array, $key, $value);  | 
            ||
| 23 | }  | 
            ||
| 24 | |||
| 25 | return $array;  | 
            ||
| 26 | }  | 
            ||
| 27 | |||
| 28 | /**  | 
            ||
| 29 | * Cross join the given arrays, returning all possible permutations.  | 
            ||
| 30 | *  | 
            ||
| 31 | * @param array ...$arrays  | 
            ||
| 32 | *  | 
            ||
| 33 | * @return array  | 
            ||
| 34 | */  | 
            ||
| 35 | public static function crossJoin(...$arrays)  | 
            ||
| 36 |     { | 
            ||
| 37 | $results = [[]];  | 
            ||
| 38 | |||
| 39 |         foreach ($arrays as $index => $array) { | 
            ||
| 40 | $append = [];  | 
            ||
| 41 | |||
| 42 |             foreach ($results as $product) { | 
            ||
| 43 |                 foreach ($array as $item) { | 
            ||
| 44 | $product[$index] = $item;  | 
            ||
| 45 | |||
| 46 | $append[] = $product;  | 
            ||
| 47 | }  | 
            ||
| 48 | }  | 
            ||
| 49 | |||
| 50 | $results = $append;  | 
            ||
| 51 | }  | 
            ||
| 52 | |||
| 53 | return $results;  | 
            ||
| 54 | }  | 
            ||
| 55 | |||
| 56 | /**  | 
            ||
| 57 | * Divide an array into two arrays. One with keys and the other with values.  | 
            ||
| 58 | *  | 
            ||
| 59 | * @param array $array  | 
            ||
| 60 | *  | 
            ||
| 61 | * @return array  | 
            ||
| 62 | */  | 
            ||
| 63 | public static function divide(array $array)  | 
            ||
| 64 |     { | 
            ||
| 65 | return [array_keys($array), array_values($array)];  | 
            ||
| 66 | }  | 
            ||
| 67 | |||
| 68 | /**  | 
            ||
| 69 | * Flatten a multi-dimensional associative array with dots.  | 
            ||
| 70 | *  | 
            ||
| 71 | * @param array $array  | 
            ||
| 72 | * @param string $prepend  | 
            ||
| 73 | *  | 
            ||
| 74 | * @return array  | 
            ||
| 75 | */  | 
            ||
| 76 | public static function dot(array $array, $prepend = '')  | 
            ||
| 77 |     { | 
            ||
| 78 | $results = [];  | 
            ||
| 79 | |||
| 80 |         foreach ($array as $key => $value) { | 
            ||
| 81 |             if (is_array($value) && !empty($value)) { | 
            ||
| 82 | $results = array_merge($results, static::dot($value, $prepend.$key.'.'));  | 
            ||
| 83 |             } else { | 
            ||
| 84 | $results[$prepend.$key] = $value;  | 
            ||
| 85 | }  | 
            ||
| 86 | }  | 
            ||
| 87 | |||
| 88 | return $results;  | 
            ||
| 89 | }  | 
            ||
| 90 | |||
| 91 | /**  | 
            ||
| 92 | * Get all of the given array except for a specified array of items.  | 
            ||
| 93 | *  | 
            ||
| 94 | * @param array $array  | 
            ||
| 95 | * @param array|string $keys  | 
            ||
| 96 | *  | 
            ||
| 97 | * @return array  | 
            ||
| 98 | */  | 
            ||
| 99 | public static function except(array $array, $keys)  | 
            ||
| 100 |     { | 
            ||
| 101 | static::forget($array, $keys);  | 
            ||
| 102 | |||
| 103 | return $array;  | 
            ||
| 104 | }  | 
            ||
| 105 | |||
| 106 | /**  | 
            ||
| 107 | * Determine if the given key exists in the provided array.  | 
            ||
| 108 | *  | 
            ||
| 109 | * @param \ArrayAccess|array $array  | 
            ||
| 110 | * @param string|int $key  | 
            ||
| 111 | *  | 
            ||
| 112 | * @return bool  | 
            ||
| 113 | */  | 
            ||
| 114 | public static function exists(array $array, $key)  | 
            ||
| 115 |     { | 
            ||
| 116 | return array_key_exists($key, $array);  | 
            ||
| 117 | }  | 
            ||
| 118 | |||
| 119 | /**  | 
            ||
| 120 | * Return the first element in an array passing a given truth test.  | 
            ||
| 121 | *  | 
            ||
| 122 | * @param array $array  | 
            ||
| 123 | * @param callable|null $callback  | 
            ||
| 124 | * @param mixed $default  | 
            ||
| 125 | *  | 
            ||
| 126 | * @return mixed  | 
            ||
| 127 | */  | 
            ||
| 128 | public static function first(array $array, callable $callback = null, $default = null)  | 
            ||
| 129 |     { | 
            ||
| 130 |         if (is_null($callback)) { | 
            ||
| 131 |             if (empty($array)) { | 
            ||
| 132 | return $default;  | 
            ||
| 133 | }  | 
            ||
| 134 | |||
| 135 |             foreach ($array as $item) { | 
            ||
| 136 | return $item;  | 
            ||
| 137 | }  | 
            ||
| 138 | }  | 
            ||
| 139 | |||
| 140 |         foreach ($array as $key => $value) { | 
            ||
| 141 |             if (call_user_func($callback, $value, $key)) { | 
            ||
| 142 | return $value;  | 
            ||
| 143 | }  | 
            ||
| 144 | }  | 
            ||
| 145 | |||
| 146 | return $default;  | 
            ||
| 147 | }  | 
            ||
| 148 | |||
| 149 | /**  | 
            ||
| 150 | * Return the last element in an array passing a given truth test.  | 
            ||
| 151 | *  | 
            ||
| 152 | * @param array $array  | 
            ||
| 153 | * @param callable|null $callback  | 
            ||
| 154 | * @param mixed $default  | 
            ||
| 155 | *  | 
            ||
| 156 | * @return mixed  | 
            ||
| 157 | */  | 
            ||
| 158 | public static function last(array $array, callable $callback = null, $default = null)  | 
            ||
| 159 |     { | 
            ||
| 160 |         if (is_null($callback)) { | 
            ||
| 161 | return empty($array) ? $default : end($array);  | 
            ||
| 162 | }  | 
            ||
| 163 | |||
| 164 | return static::first(array_reverse($array, true), $callback, $default);  | 
            ||
| 165 | }  | 
            ||
| 166 | |||
| 167 | /**  | 
            ||
| 168 | * Flatten a multi-dimensional array into a single level.  | 
            ||
| 169 | *  | 
            ||
| 170 | * @param array $array  | 
            ||
| 171 | * @param int $depth  | 
            ||
| 172 | *  | 
            ||
| 173 | * @return array  | 
            ||
| 174 | */  | 
            ||
| 175 | public static function flatten(array $array, $depth = INF)  | 
            ||
| 176 |     { | 
            ||
| 177 |         return array_reduce($array, function ($result, $item) use ($depth) { | 
            ||
| 178 | $item = $item instanceof Collection ? $item->all() : $item;  | 
            ||
| 179 | |||
| 180 |             if (!is_array($item)) { | 
            ||
| 181 | return array_merge($result, [$item]);  | 
            ||
| 182 |             } elseif (1 === $depth) { | 
            ||
| 183 | return array_merge($result, array_values($item));  | 
            ||
| 184 | }  | 
            ||
| 185 | |||
| 186 | return array_merge($result, static::flatten($item, $depth - 1));  | 
            ||
| 
                                                                                                    
                        
                         | 
                |||
| 187 | }, []);  | 
            ||
| 188 | }  | 
            ||
| 189 | |||
| 190 | /**  | 
            ||
| 191 | * Remove one or many array items from a given array using "dot" notation.  | 
            ||
| 192 | *  | 
            ||
| 193 | * @param array $array  | 
            ||
| 194 | * @param array|string $keys  | 
            ||
| 195 | */  | 
            ||
| 196 | public static function forget(array &$array, $keys)  | 
            ||
| 197 |     { | 
            ||
| 198 | $original = &$array;  | 
            ||
| 199 | |||
| 200 | $keys = (array) $keys;  | 
            ||
| 201 | |||
| 202 |         if (0 === count($keys)) { | 
            ||
| 203 | return;  | 
            ||
| 204 | }  | 
            ||
| 205 | |||
| 206 |         foreach ($keys as $key) { | 
            ||
| 207 | // if the exact key exists in the top-level, remove it  | 
            ||
| 208 |             if (static::exists($array, $key)) { | 
            ||
| 209 | unset($array[$key]);  | 
            ||
| 210 | |||
| 211 | continue;  | 
            ||
| 212 | }  | 
            ||
| 213 | |||
| 214 |             $parts = explode('.', $key); | 
            ||
| 215 | |||
| 216 | // clean up before each pass  | 
            ||
| 217 | $array = &$original;  | 
            ||
| 218 | |||
| 219 |             while (count($parts) > 1) { | 
            ||
| 220 | $part = array_shift($parts);  | 
            ||
| 221 | |||
| 222 |                 if (isset($array[$part]) && is_array($array[$part])) { | 
            ||
| 223 | $array = &$array[$part];  | 
            ||
| 224 |                 } else { | 
            ||
| 225 | continue 2;  | 
            ||
| 226 | }  | 
            ||
| 227 | }  | 
            ||
| 228 | |||
| 229 | unset($array[array_shift($parts)]);  | 
            ||
| 230 | }  | 
            ||
| 231 | }  | 
            ||
| 232 | |||
| 233 | /**  | 
            ||
| 234 | * Get an item from an array using "dot" notation.  | 
            ||
| 235 | *  | 
            ||
| 236 | * @param \ArrayAccess|array $array  | 
            ||
| 237 | * @param string $key  | 
            ||
| 238 | * @param mixed $default  | 
            ||
| 239 | *  | 
            ||
| 240 | * @return mixed  | 
            ||
| 241 | */  | 
            ||
| 242 | public static function get(array $array, $key, $default = null)  | 
            ||
| 243 |     { | 
            ||
| 244 |         if (is_null($key)) { | 
            ||
| 245 | return $array;  | 
            ||
| 246 | }  | 
            ||
| 247 | |||
| 248 |         if (static::exists($array, $key)) { | 
            ||
| 249 | return $array[$key];  | 
            ||
| 250 | }  | 
            ||
| 251 | |||
| 252 |         foreach (explode('.', $key) as $segment) { | 
            ||
| 253 |             if (static::exists($array, $segment)) { | 
            ||
| 254 | $array = $array[$segment];  | 
            ||
| 255 |             } else { | 
            ||
| 256 | return $default;  | 
            ||
| 257 | }  | 
            ||
| 258 | }  | 
            ||
| 259 | |||
| 260 | return $array;  | 
            ||
| 261 | }  | 
            ||
| 262 | |||
| 263 | /**  | 
            ||
| 264 | * Check if an item or items exist in an array using "dot" notation.  | 
            ||
| 265 | *  | 
            ||
| 266 | * @param \ArrayAccess|array $array  | 
            ||
| 267 | * @param string|array $keys  | 
            ||
| 268 | *  | 
            ||
| 269 | * @return bool  | 
            ||
| 270 | */  | 
            ||
| 271 | public static function has(array $array, $keys)  | 
            ||
| 272 |     { | 
            ||
| 273 |         if (is_null($keys)) { | 
            ||
| 274 | return false;  | 
            ||
| 275 | }  | 
            ||
| 276 | |||
| 277 | $keys = (array) $keys;  | 
            ||
| 278 | |||
| 279 |         if (empty($array)) { | 
            ||
| 280 | return false;  | 
            ||
| 281 | }  | 
            ||
| 282 | |||
| 283 |         if ($keys === []) { | 
            ||
| 284 | return false;  | 
            ||
| 285 | }  | 
            ||
| 286 | |||
| 287 |         foreach ($keys as $key) { | 
            ||
| 288 | $subKeyArray = $array;  | 
            ||
| 289 | |||
| 290 |             if (static::exists($array, $key)) { | 
            ||
| 291 | continue;  | 
            ||
| 292 | }  | 
            ||
| 293 | |||
| 294 |             foreach (explode('.', $key) as $segment) { | 
            ||
| 295 |                 if (static::exists($subKeyArray, $segment)) { | 
            ||
| 296 | $subKeyArray = $subKeyArray[$segment];  | 
            ||
| 297 |                 } else { | 
            ||
| 298 | return false;  | 
            ||
| 299 | }  | 
            ||
| 300 | }  | 
            ||
| 301 | }  | 
            ||
| 302 | |||
| 303 | return true;  | 
            ||
| 304 | }  | 
            ||
| 305 | |||
| 306 | /**  | 
            ||
| 307 | * Determines if an array is associative.  | 
            ||
| 308 | *  | 
            ||
| 309 | * An array is "associative" if it doesn't have sequential numerical keys beginning with zero.  | 
            ||
| 310 | *  | 
            ||
| 311 | * @param array $array  | 
            ||
| 312 | *  | 
            ||
| 313 | * @return bool  | 
            ||
| 314 | */  | 
            ||
| 315 | public static function isAssoc(array $array)  | 
            ||
| 316 |     { | 
            ||
| 317 | $keys = array_keys($array);  | 
            ||
| 318 | |||
| 319 | return array_keys($keys) !== $keys;  | 
            ||
| 320 | }  | 
            ||
| 321 | |||
| 322 | /**  | 
            ||
| 323 | * Get a subset of the items from the given array.  | 
            ||
| 324 | *  | 
            ||
| 325 | * @param array $array  | 
            ||
| 326 | * @param array|string $keys  | 
            ||
| 327 | *  | 
            ||
| 328 | * @return array  | 
            ||
| 329 | */  | 
            ||
| 330 | public static function only(array $array, $keys)  | 
            ||
| 333 | }  | 
            ||
| 334 | |||
| 335 | /**  | 
            ||
| 336 | * Push an item onto the beginning of an array.  | 
            ||
| 337 | *  | 
            ||
| 338 | * @param array $array  | 
            ||
| 339 | * @param mixed $value  | 
            ||
| 340 | * @param mixed $key  | 
            ||
| 341 | *  | 
            ||
| 342 | * @return array  | 
            ||
| 343 | */  | 
            ||
| 344 | public static function prepend(array $array, $value, $key = null)  | 
            ||
| 353 | }  | 
            ||
| 354 | |||
| 355 | /**  | 
            ||
| 356 | * Get a value from the array, and remove it.  | 
            ||
| 357 | *  | 
            ||
| 358 | * @param array $array  | 
            ||
| 359 | * @param string $key  | 
            ||
| 360 | * @param mixed $default  | 
            ||
| 361 | *  | 
            ||
| 362 | * @return mixed  | 
            ||
| 363 | */  | 
            ||
| 364 | public static function pull(array &$array, $key, $default = null)  | 
            ||
| 365 |     { | 
            ||
| 366 | $value = static::get($array, $key, $default);  | 
            ||
| 367 | |||
| 368 | static::forget($array, $key);  | 
            ||
| 369 | |||
| 370 | return $value;  | 
            ||
| 371 | }  | 
            ||
| 372 | |||
| 373 | /**  | 
            ||
| 374 | * Get a 1 value from an array.  | 
            ||
| 375 | *  | 
            ||
| 376 | * @param array $array  | 
            ||
| 377 | * @param int|null $amount  | 
            ||
| 378 | *  | 
            ||
| 379 | * @throws \InvalidArgumentException  | 
            ||
| 380 | *  | 
            ||
| 381 | * @return mixed  | 
            ||
| 382 | */  | 
            ||
| 383 | public static function random(array $array, int $amount = null)  | 
            ||
| 384 |     { | 
            ||
| 385 |         if (is_null($amount)) { | 
            ||
| 386 | return $array[array_rand($array)];  | 
            ||
| 387 | }  | 
            ||
| 388 | |||
| 389 | $keys = array_rand($array, $amount);  | 
            ||
| 390 | |||
| 391 | $results = [];  | 
            ||
| 392 | |||
| 393 |         foreach ((array) $keys as $key) { | 
            ||
| 394 | $results[] = $array[$key];  | 
            ||
| 395 | }  | 
            ||
| 396 | |||
| 397 | return $results;  | 
            ||
| 398 | }  | 
            ||
| 399 | |||
| 400 | /**  | 
            ||
| 401 | * Set an array item to a given value using "dot" notation.  | 
            ||
| 402 | *  | 
            ||
| 403 | * If no key is given to the method, the entire array will be replaced.  | 
            ||
| 404 | *  | 
            ||
| 405 | * @param array $array  | 
            ||
| 406 | * @param string $key  | 
            ||
| 407 | * @param mixed $value  | 
            ||
| 408 | *  | 
            ||
| 409 | * @return array  | 
            ||
| 410 | */  | 
            ||
| 411 | public static function set(array &$array, string $key, $value)  | 
            ||
| 412 |     { | 
            ||
| 413 |         $keys = explode('.', $key); | 
            ||
| 414 | |||
| 415 |         while (count($keys) > 1) { | 
            ||
| 416 | $key = array_shift($keys);  | 
            ||
| 417 | |||
| 418 | // If the key doesn't exist at this depth, we will just create an empty array  | 
            ||
| 419 | // to hold the next value, allowing us to create the arrays to hold final  | 
            ||
| 420 | // values at the correct depth. Then we'll keep digging into the array.  | 
            ||
| 421 |             if (!isset($array[$key]) || !is_array($array[$key])) { | 
            ||
| 422 | $array[$key] = [];  | 
            ||
| 423 | }  | 
            ||
| 424 | |||
| 425 | $array = &$array[$key];  | 
            ||
| 426 | }  | 
            ||
| 427 | |||
| 428 | $array[array_shift($keys)] = $value;  | 
            ||
| 429 | |||
| 430 | return $array;  | 
            ||
| 431 | }  | 
            ||
| 432 | |||
| 433 | /**  | 
            ||
| 434 | * Filter the array using the given callback.  | 
            ||
| 435 | *  | 
            ||
| 436 | * @param array $array  | 
            ||
| 437 | * @param callable $callback  | 
            ||
| 438 | *  | 
            ||
| 439 | * @return array  | 
            ||
| 440 | */  | 
            ||
| 441 | public static function where(array $array, callable $callback)  | 
            ||
| 444 | }  | 
            ||
| 445 | |||
| 446 | /**  | 
            ||
| 447 | * If the given value is not an array, wrap it in one.  | 
            ||
| 448 | *  | 
            ||
| 449 | * @param mixed $value  | 
            ||
| 450 | *  | 
            ||
| 451 | * @return array  | 
            ||
| 452 | */  | 
            ||
| 453 | public static function wrap($value)  | 
            ||
| 454 |     { | 
            ||
| 456 | }  | 
            ||
| 457 | }  | 
            ||
| 458 |