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<?php |
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namespace Equip; |
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/** |
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* Get a single value from an array. |
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* |
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* If the value does not exist, the default will be returned. |
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* |
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* @param array $source |
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* @param string|integer $key |
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* @param mixed $default |
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* |
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* @return mixed |
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*/ |
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function take(array $source, $key, $default = null) |
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{ |
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if (isset($source[$key])) { |
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return $source[$key]; |
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} |
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return $default; |
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} |
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/** |
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* Grab some values from an array. |
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* |
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* @param array $source |
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* @param array|string $keys |
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* |
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* @return array |
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*/ |
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function grab(array $source, $keys) |
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{ |
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return array_intersect_key( |
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$source, |
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array_flip((array) $keys) |
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); |
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} |
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/** |
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* Exclude some values from an array. |
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* |
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* This is the inverse of grab(). |
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* |
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* @param array $source |
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* @param array|string $keys |
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* |
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* @return array |
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*/ |
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function except(array $source, $keys) |
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{ |
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return array_diff_key( |
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$source, |
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array_flip((array) $keys) |
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); |
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} |
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/** |
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* Take the first value from an array. |
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* |
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* @param array $list |
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* |
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* @return mixed |
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*/ |
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function head(array $list) |
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{ |
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return array_shift($list); |
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} |
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/** |
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* Take the last value from an array. |
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* |
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* @param array $list |
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* |
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* @return mixed |
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*/ |
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function tail(array $list) |
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{ |
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return array_pop($list); |
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} |
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/** |
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* Get an array from a value. |
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* |
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* If the value is not an array, it is assumed to be a Traversable. |
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* |
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* @param Traversable|array $value |
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* |
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* @return array |
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*/ |
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function to_array($value) |
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{ |
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if (is_array($value)) { |
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return $value; |
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} |
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return iterator_to_array($value); |
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} |
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/** |
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* Extract a specific key from each array |
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* |
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* @param array $source |
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* @param string $key |
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* |
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* @return array |
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*/ |
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function pluck(array $source, $key) |
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{ |
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return array_map(function ($array) use ($key) { |
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if (isset($array[$key])) { |
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return $array[$key]; |
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} |
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}, $source); |
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} |
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Learn more about camelCase.