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. 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 Arr, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 9 | class Arr |
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| 10 | { |
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| 11 | use Macroable; |
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| 12 | |||
| 13 | /** |
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| 14 | * Determine whether the given value is array accessible. |
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| 15 | * |
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| 16 | * @param mixed $value |
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| 17 | * @return bool |
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| 18 | */ |
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| 19 | 99 | public static function accessible($value) |
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| 23 | |||
| 24 | /** |
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| 25 | * Add an element to an array using "dot" notation if it doesn't exist. |
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| 26 | * |
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| 27 | * @param array $array |
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| 28 | * @param string $key |
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| 29 | * @param mixed $value |
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| 30 | * @return array |
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| 31 | */ |
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| 32 | 1 | public static function add($array, $key, $value) |
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| 40 | |||
| 41 | /** |
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| 42 | * Collapse an array of arrays into a single array. |
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| 43 | * |
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| 44 | * @param array $array |
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| 45 | * @return array |
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| 46 | */ |
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| 47 | 5 | public static function collapse($array) |
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| 63 | |||
| 64 | /** |
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| 65 | * Cross join the given arrays, returning all possible permutations. |
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| 66 | * |
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| 67 | * @param array ...$arrays |
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| 68 | * @return array |
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| 69 | */ |
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| 70 | 3 | public static function crossJoin(...$arrays) |
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| 90 | |||
| 91 | /** |
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| 92 | * Divide an array into two arrays. One with keys and the other with values. |
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| 93 | * |
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| 94 | * @param array $array |
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| 95 | * @return array |
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| 96 | */ |
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| 97 | 1 | public static function divide($array) |
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| 101 | |||
| 102 | /** |
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| 103 | * Flatten a multi-dimensional associative array with dots. |
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| 104 | * |
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| 105 | * @param array $array |
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| 106 | * @param string $prepend |
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| 107 | * @return array |
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| 108 | */ |
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| 109 | 1 | public static function dot($array, $prepend = '') |
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| 123 | |||
| 124 | /** |
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| 125 | * Get all of the given array except for a specified array of keys. |
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| 126 | * |
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| 127 | * @param array $array |
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| 128 | * @param array|string $keys |
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| 129 | * @return array |
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| 130 | */ |
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| 131 | 5 | public static function except($array, $keys) |
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| 137 | |||
| 138 | /** |
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| 139 | * Determine if the given key exists in the provided array. |
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| 140 | * |
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| 141 | * @param \ArrayAccess|array $array |
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| 142 | * @param string|int $key |
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| 143 | * @return bool |
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| 144 | */ |
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| 145 | 91 | public static function exists($array, $key) |
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| 153 | |||
| 154 | /** |
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| 155 | * Return the first element in an array passing a given truth test. |
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| 156 | * |
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| 157 | * @param array $array |
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| 158 | * @param callable|null $callback |
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| 159 | * @param mixed $default |
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| 160 | * @return mixed |
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| 161 | */ |
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| 162 | 29 | public static function first($array, callable $callback = null, $default = null) |
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| 182 | |||
| 183 | /** |
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| 184 | * Return the last element in an array passing a given truth test. |
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| 185 | * |
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| 186 | * @param array $array |
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| 187 | * @param callable|null $callback |
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| 188 | * @param mixed $default |
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| 189 | * @return mixed |
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| 190 | */ |
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| 191 | 13 | public static function last($array, callable $callback = null, $default = null) |
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| 199 | |||
| 200 | /** |
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| 201 | * Flatten a multi-dimensional array into a single level. |
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| 202 | * |
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| 203 | * @param array $array |
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| 204 | * @param int $depth |
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| 205 | * @return array |
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| 206 | */ |
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| 207 | 5 | public static function flatten($array, $depth = INF) |
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| 208 | { |
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| 209 | 5 | $result = []; |
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| 210 | |||
| 211 | 5 | foreach ($array as $item) { |
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| 212 | 5 | $item = $item instanceof Collection ? $item->all() : $item; |
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| 213 | |||
| 214 | 5 | if (! is_array($item)) { |
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| 215 | 5 | $result[] = $item; |
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| 216 | } else { |
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| 217 | 5 | $values = $depth === 1 |
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| 218 | 3 | ? array_values($item) |
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| 219 | 5 | : static::flatten($item, $depth - 1); |
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| 220 | |||
| 221 | 5 | foreach ($values as $value) { |
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| 222 | 5 | $result[] = $value; |
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| 223 | } |
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| 224 | } |
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| 225 | } |
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| 226 | |||
| 227 | 5 | return $result; |
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| 228 | } |
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| 229 | |||
| 230 | /** |
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| 231 | * Remove one or many array items from a given array using "dot" notation. |
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| 232 | * |
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| 233 | * @param array $array |
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| 234 | * @param array|string $keys |
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| 235 | * @return void |
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| 236 | */ |
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| 237 | 10 | public static function forget(&$array, $keys) |
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| 238 | { |
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| 239 | 10 | $original = &$array; |
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| 240 | |||
| 241 | 10 | $keys = (array) $keys; |
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| 242 | |||
| 243 | 10 | if (count($keys) === 0) { |
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| 244 | 1 | return; |
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| 245 | } |
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| 246 | |||
| 247 | 10 | foreach ($keys as $key) { |
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| 248 | // if the exact key exists in the top-level, remove it |
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| 249 | 10 | if (static::exists($array, $key)) { |
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| 250 | 7 | unset($array[$key]); |
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| 251 | |||
| 252 | 7 | continue; |
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| 253 | } |
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| 254 | |||
| 255 | 8 | $parts = explode('.', $key); |
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| 256 | |||
| 257 | // clean up before each pass |
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| 258 | 8 | $array = &$original; |
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| 259 | |||
| 260 | 8 | while (count($parts) > 1) { |
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| 261 | 3 | $part = array_shift($parts); |
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| 262 | |||
| 263 | 3 | if (isset($array[$part]) && is_array($array[$part])) { |
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| 264 | 3 | $array = &$array[$part]; |
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| 265 | } else { |
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| 266 | 2 | continue 2; |
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| 267 | } |
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| 268 | } |
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| 269 | |||
| 270 | 7 | unset($array[array_shift($parts)]); |
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| 271 | } |
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| 272 | 10 | } |
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| 273 | |||
| 274 | /** |
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| 275 | * Get an item from an array using "dot" notation. |
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| 276 | * |
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| 277 | * @param \ArrayAccess|array $array |
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| 278 | * @param string|int $key |
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| 279 | * @param mixed $default |
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| 280 | * @return mixed |
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| 281 | */ |
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| 282 | 6 | public static function get($array, $key, $default = null) |
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| 283 | { |
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| 284 | 6 | if (! static::accessible($array)) { |
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| 285 | 1 | return value($default); |
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| 286 | } |
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| 287 | |||
| 288 | 6 | if (is_null($key)) { |
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| 289 | 1 | return $array; |
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| 290 | } |
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| 291 | |||
| 292 | 6 | if (static::exists($array, $key)) { |
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| 293 | 4 | return $array[$key]; |
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| 294 | } |
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| 295 | |||
| 296 | 4 | if (strpos($key, '.') === false) { |
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| 297 | 2 | return $array[$key] ?? value($default); |
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| 298 | } |
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| 299 | |||
| 300 | 3 | foreach (explode('.', $key) as $segment) { |
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| 301 | 3 | if (static::accessible($array) && static::exists($array, $segment)) { |
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| 302 | 2 | $array = $array[$segment]; |
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| 303 | } else { |
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| 304 | 3 | return value($default); |
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| 305 | } |
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| 306 | } |
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| 307 | |||
| 308 | 1 | return $array; |
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| 309 | } |
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| 310 | |||
| 311 | /** |
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| 312 | * Check if an item or items exist in an array using "dot" notation. |
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| 313 | * |
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| 314 | * @param \ArrayAccess|array $array |
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| 315 | * @param string|array $keys |
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| 316 | * @return bool |
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| 317 | */ |
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| 318 | 2 | public static function has($array, $keys) |
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| 319 | { |
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| 320 | 2 | $keys = (array) $keys; |
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| 321 | |||
| 322 | 2 | if (! $array || $keys === []) { |
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| 323 | 1 | return false; |
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| 324 | } |
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| 325 | |||
| 326 | 2 | foreach ($keys as $key) { |
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| 327 | 2 | $subKeyArray = $array; |
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| 328 | |||
| 329 | 2 | if (static::exists($array, $key)) { |
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| 330 | 2 | continue; |
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| 331 | } |
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| 332 | |||
| 333 | 2 | foreach (explode('.', $key) as $segment) { |
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| 334 | 2 | if (static::accessible($subKeyArray) && static::exists($subKeyArray, $segment)) { |
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| 335 | 2 | $subKeyArray = $subKeyArray[$segment]; |
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| 336 | } else { |
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| 337 | 2 | return false; |
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| 338 | } |
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| 339 | } |
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| 340 | } |
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| 341 | |||
| 342 | 2 | return true; |
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| 343 | } |
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| 344 | |||
| 345 | /** |
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| 346 | * Determines if an array is associative. |
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| 347 | * |
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| 348 | * An array is "associative" if it doesn't have sequential numerical keys beginning with zero. |
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| 349 | * |
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| 350 | * @param array $array |
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| 351 | * @return bool |
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| 352 | 1 | */ |
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| 353 | public static function isAssoc(array $array) |
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| 354 | 1 | { |
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| 355 | $keys = array_keys($array); |
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| 356 | |||
| 357 | return array_keys($keys) !== $keys; |
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| 358 | 1 | } |
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| 359 | |||
| 360 | 1 | /** |
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| 361 | * Get a subset of the items from the given array. |
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| 362 | * |
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| 363 | * @param array $array |
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| 364 | 1 | * @param array|string $keys |
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| 365 | * @return array |
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| 366 | */ |
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| 367 | public static function only($array, $keys) |
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| 368 | 1 | { |
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| 369 | 1 | return array_intersect_key($array, array_flip((array) $keys)); |
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| 370 | 1 | } |
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| 371 | |||
| 372 | /** |
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| 373 | * Pluck an array of values from an array. |
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| 374 | 1 | * |
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| 375 | * @param array $array |
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| 376 | * @param string|array $value |
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| 377 | * @param string|array|null $key |
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| 378 | * @return array |
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| 379 | */ |
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| 380 | public static function pluck($array, $value, $key = null) |
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| 381 | { |
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| 382 | $results = []; |
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| 383 | |||
| 384 | [$value, $key] = static::explodePluckParameters($value, $key); |
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| 385 | 2 | ||
| 386 | foreach ($array as $item) { |
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| 387 | 2 | $itemValue = data_get($item, $value); |
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| 388 | |||
| 389 | 2 | // If the key is "null", we will just append the value to the array and keep |
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| 390 | // looping. Otherwise we will key the array using the value of the key we |
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| 391 | // received from the developer. Then we'll return the final array form. |
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| 392 | if (is_null($key)) { |
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| 393 | $results[] = $itemValue; |
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| 394 | } else { |
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| 395 | $itemKey = data_get($item, $key); |
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| 396 | |||
| 397 | if (is_object($itemKey) && method_exists($itemKey, '__toString')) { |
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| 398 | $itemKey = (string) $itemKey; |
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| 399 | 2 | } |
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| 400 | |||
| 401 | 2 | $results[$itemKey] = $itemValue; |
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| 402 | } |
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| 403 | } |
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| 404 | |||
| 405 | return $results; |
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| 406 | } |
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| 407 | |||
| 408 | /** |
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| 409 | * Explode the "value" and "key" arguments passed to "pluck". |
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| 410 | * |
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| 411 | * @param string|array $value |
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| 412 | 23 | * @param string|array|null $key |
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| 413 | * @return array |
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| 414 | 23 | */ |
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| 415 | protected static function explodePluckParameters($value, $key) |
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| 416 | 23 | { |
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| 417 | $value = is_string($value) ? explode('.', $value) : $value; |
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| 418 | 23 | ||
| 419 | 23 | $key = is_null($key) || is_array($key) ? $key : explode('.', $key); |
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| 420 | |||
| 421 | return [$value, $key]; |
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| 422 | } |
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| 423 | |||
| 424 | 23 | /** |
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| 425 | 21 | * Push an item onto the beginning of an array. |
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| 426 | * |
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| 427 | 7 | * @param array $array |
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| 428 | * @param mixed $value |
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| 429 | 7 | * @param mixed $key |
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| 430 | 1 | * @return array |
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| 431 | */ |
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| 432 | public static function prepend($array, $value, $key = null) |
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| 442 | |||
| 443 | /** |
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| 444 | * Get a value from the array, and remove it. |
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| 445 | * |
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| 446 | * @param array $array |
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| 447 | 23 | * @param string $key |
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| 448 | * @param mixed $default |
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| 449 | 23 | * @return mixed |
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| 450 | */ |
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| 451 | 23 | public static function pull(&$array, $key, $default = null) |
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| 459 | |||
| 460 | /** |
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| 461 | * Get one or a specified number of random values from an array. |
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| 462 | * |
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| 463 | * @param array $array |
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| 464 | 3 | * @param int|null $number |
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| 465 | * @return mixed |
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| 466 | 3 | * |
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| 467 | 3 | * @throws \InvalidArgumentException |
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| 468 | */ |
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| 469 | 2 | public static function random($array, $number = null) |
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| 470 | { |
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| 471 | $requested = is_null($number) ? 1 : $number; |
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| 472 | 3 | ||
| 473 | $count = count($array); |
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| 474 | |||
| 475 | if ($requested > $count) { |
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| 476 | throw new InvalidArgumentException( |
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| 477 | "You requested {$requested} items, but there are only {$count} items available." |
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| 478 | ); |
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| 479 | } |
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| 480 | |||
| 481 | if (is_null($number)) { |
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| 482 | return $array[array_rand($array)]; |
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| 483 | 4 | } |
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| 484 | |||
| 485 | 4 | if ((int) $number === 0) { |
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| 486 | return []; |
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| 487 | 4 | } |
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| 488 | |||
| 489 | 4 | $keys = array_rand($array, $number); |
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| 490 | |||
| 491 | $results = []; |
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| 492 | |||
| 493 | foreach ((array) $keys as $key) { |
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| 494 | $results[] = $array[$key]; |
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| 495 | } |
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| 496 | |||
| 497 | return $results; |
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| 498 | } |
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| 499 | |||
| 500 | /** |
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| 501 | 9 | * Set an array item to a given value using "dot" notation. |
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| 502 | * |
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| 503 | 9 | * If no key is given to the method, the entire array will be replaced. |
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| 504 | * |
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| 505 | 9 | * @param array $array |
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| 506 | * @param string $key |
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| 507 | 9 | * @param mixed $value |
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| 508 | 3 | * @return array |
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| 509 | 3 | */ |
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| 510 | public static function set(&$array, $key, $value) |
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| 511 | { |
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| 512 | if (is_null($key)) { |
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| 513 | 6 | return $array = $value; |
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| 514 | 3 | } |
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| 515 | |||
| 516 | $keys = explode('.', $key); |
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| 517 | 6 | ||
| 518 | 6 | while (count($keys) > 1) { |
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| 519 | $key = array_shift($keys); |
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| 520 | |||
| 521 | 3 | // If the key doesn't exist at this depth, we will just create an empty array |
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| 522 | // to hold the next value, allowing us to create the arrays to hold final |
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| 523 | 3 | // values at the correct depth. Then we'll keep digging into the array. |
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| 524 | if (! isset($array[$key]) || ! is_array($array[$key])) { |
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| 525 | 3 | $array[$key] = []; |
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| 526 | 3 | } |
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| 527 | |||
| 528 | $array = &$array[$key]; |
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| 529 | 3 | } |
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| 530 | |||
| 531 | $array[array_shift($keys)] = $value; |
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| 532 | |||
| 533 | return $array; |
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| 534 | } |
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| 535 | |||
| 536 | /** |
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| 537 | * Shuffle the given array and return the result. |
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| 538 | * |
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| 539 | * @param array $array |
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| 540 | * @param int|null $seed |
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| 541 | * @return array |
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| 542 | 3 | */ |
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| 543 | public static function shuffle($array, $seed = null) |
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| 544 | 3 | { |
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| 545 | 1 | if (is_null($seed)) { |
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| 546 | shuffle($array); |
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| 547 | } else { |
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| 548 | 3 | mt_srand($seed); |
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| 549 | shuffle($array); |
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| 550 | 3 | mt_srand(); |
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| 551 | 3 | } |
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| 552 | |||
| 553 | return $array; |
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| 554 | } |
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| 555 | |||
| 556 | 3 | /** |
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| 557 | 2 | * Sort the array using the given callback or "dot" notation. |
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| 558 | * |
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| 559 | * @param array $array |
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| 560 | 3 | * @param callable|string|null $callback |
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| 561 | * @return array |
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| 562 | */ |
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| 563 | 3 | public static function sort($array, $callback = null) |
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| 564 | { |
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| 565 | 3 | return Collection::make($array)->sortBy($callback)->all(); |
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| 566 | } |
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| 567 | |||
| 568 | /** |
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| 569 | * Recursively sort an array by keys and values. |
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| 570 | * |
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| 571 | * @param array $array |
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| 572 | * @return array |
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| 573 | */ |
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| 574 | public static function sortRecursive($array) |
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| 575 | 3 | { |
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| 576 | foreach ($array as &$value) { |
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| 577 | 3 | if (is_array($value)) { |
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| 578 | 1 | $value = static::sortRecursive($value); |
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| 579 | } |
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| 580 | 2 | } |
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| 581 | 2 | ||
| 582 | 2 | if (static::isAssoc($array)) { |
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| 583 | ksort($array); |
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| 584 | } else { |
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| 585 | 3 | sort($array); |
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| 586 | } |
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| 587 | |||
| 588 | return $array; |
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| 589 | } |
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| 590 | |||
| 591 | /** |
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| 592 | * Convert the array into a query string. |
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| 593 | * |
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| 594 | * @param array $array |
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| 595 | 1 | * @return string |
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| 596 | */ |
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| 597 | 1 | public static function query($array) |
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| 598 | { |
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| 599 | return http_build_query($array, null, '&', PHP_QUERY_RFC3986); |
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| 600 | } |
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| 601 | |||
| 602 | /** |
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| 603 | * Filter the array using the given callback. |
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| 604 | * |
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| 605 | * @param array $array |
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| 606 | 1 | * @param callable $callback |
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| 607 | * @return array |
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| 608 | 1 | */ |
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| 609 | 1 | public static function where($array, callable $callback) |
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| 610 | 1 | { |
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| 611 | return array_filter($array, $callback, ARRAY_FILTER_USE_BOTH); |
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| 612 | } |
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| 613 | |||
| 614 | 1 | /** |
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| 615 | 1 | * If the given value is not an array and not null, wrap it in one. |
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| 616 | * |
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| 617 | 1 | * @param mixed $value |
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| 618 | * @return array |
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| 619 | */ |
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| 620 | 1 | public static function wrap($value) |
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| 628 | } |
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| 629 |