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<?php |
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namespace Narrowspark\Arr; |
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use Closure; |
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use Narrowspark\Arr\Traits\SplitPathTrait; |
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use Narrowspark\Arr\Traits\ValueTrait; |
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class Transform |
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{ |
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/** |
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* Dotted array cache. |
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* |
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* @var array |
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*/ |
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protected $dotted = []; |
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/** |
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* A instance of Access |
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* |
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* @var \Narrowspark\Arr\Access |
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*/ |
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protected $access; |
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/** |
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* A instance of Access |
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* |
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* @var \Narrowspark\Arr\Enumerator |
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*/ |
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protected $enumerator; |
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public function __construct() |
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{ |
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$this->access = new Access(); |
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$this->enumerator = new Enumerator(); |
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} |
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/** |
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* Pop value from sub array. |
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* |
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* @param array $array |
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* @param string $key |
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* |
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* @return mixed |
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*/ |
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public static function pop(array $array, $key) |
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{ |
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$keys = explode('.', $key); |
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foreach ($keys as $key) { |
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if (!isset($array[$key])) { |
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return; |
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} |
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$array = $array[$key]; |
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} |
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if (!is_array($array)) { |
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return; |
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} |
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return array_pop($array); |
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} |
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/** |
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* Swap two elements between positions. |
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* |
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* @param array $array array to swap |
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* @param string $swapA |
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* @param string $swapB |
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* |
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* @return array|null |
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*/ |
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public function swap(array $array, $swapA, $swapB) |
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{ |
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list($array[$swapA], $array[$swapB]) = [$array[$swapB], $array[$swapA]]; |
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return $array; |
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} |
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/** |
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* Create a new array consisting of every n-th element. |
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* |
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* @param array $array |
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* @param int $step |
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* @param int $offset |
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* |
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* @return array |
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*/ |
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public static function every($array, $step, $offset = 0) |
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{ |
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$new = []; |
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$position = 0; |
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foreach ($array as $key => $item) { |
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if ($position % $step === $offset) { |
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$new[] = $item; |
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} |
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$position++; |
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} |
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return $new; |
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} |
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/** |
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* Indexes an array depending on the values it contains. |
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* |
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* @param array $array |
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* @param callable $callback Function to combine values. |
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* @param bool $overwrite Should duplicate keys be overwritten? |
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* |
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* @return array Indexed values. |
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*/ |
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public function combine(array $array, callable $callback, $overwrite = true) |
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{ |
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$combined = []; |
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foreach ($array as $key => $value) { |
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$combinator = call_user_func($callback, $value, $key); |
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$index = $combinator->key(); |
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if ($overwrite || !isset($combined[$index])) { |
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$combined[$index] = $combinator->current(); |
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} |
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} |
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return $combined; |
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} |
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/** |
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* Collapse a nested array down to an array of flat key=>value pairs |
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*/ |
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public function collapse(array $array) |
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{ |
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$newArray = []; |
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foreach ($array as $key => $value) { |
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if (is_array($value)) { |
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// strip any manually added '.' |
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if (preg_match('/\./', $key)) { |
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$key = substr($key, 0, -2); |
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} |
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$this->recurseCollapse($value, $newArray, (array) $key); |
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} else { |
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$newArray[$key] = $value; |
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} |
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} |
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return $newArray; |
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} |
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/** |
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* Divide an array into two arrays. One with keys and the other with values. |
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* |
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* @param array $array |
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* |
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* @return array[] |
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*/ |
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public function divide($array) |
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{ |
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return [array_keys($array), array_values($array)]; |
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} |
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/** |
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* Stripe all empty items. |
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* |
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* @param array $source |
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* |
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* @return array |
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*/ |
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public function stripEmpty(array $array) |
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{ |
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return array_filter($array, function ($item) { |
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if (is_null($item)) { |
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return false; |
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} |
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if (!trim($item)) { |
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return false; |
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} |
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return true; |
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}); |
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} |
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/** |
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* Remove all instances of $ignore found in $elements (=== is used). |
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* |
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* @param array $elements |
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* @param array $ignore |
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* |
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* @return array |
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*/ |
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public function without(array $array, array $ignore) |
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{ |
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foreach ($array as $key => $node) { |
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if (in_array($node, $ignore, true)) { |
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unset($array[$key]); |
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} |
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} |
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return array_values($array); |
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} |
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/** |
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* Reindexes a list of values. |
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* |
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* @param array $array |
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* @param array $map An map of correspondances of the form |
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* ['currentIndex' => 'newIndex']. |
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* @param bool $unmapped Whether or not to keep keys that are not |
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* remapped. |
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* |
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* @return array |
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*/ |
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public function reindex(array $array, array $map, $unmapped = true) |
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{ |
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$reindexed = $unmapped |
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? $array |
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: []; |
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foreach ($map as $from => $to) { |
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if (isset($array[$from])) { |
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$reindexed[$to] = $array[$from]; |
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} |
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} |
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return $reindexed; |
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} |
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/** |
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* Merges two or more arrays into one recursively. |
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* |
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* @param array $arrays. |
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* |
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* @return array |
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*/ |
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public function merge(array $arrays) |
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{ |
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$args = func_get_args(); |
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$array = array_shift($args); |
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while (!empty($args)) { |
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$next = array_shift($args); |
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foreach ($next as $key => $value) { |
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if (is_int($key)) { |
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$array[] = $value; |
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} elseif (is_array($value) && isset($array[$key]) && is_array($array[$key])) { |
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$array[$key] = $this->merge($array[$key], $value); |
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} else { |
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$array[$key] = $value; |
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} |
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} |
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} |
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return $array; |
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} |
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/** |
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* Makes every value that is numerically indexed a key, given $default |
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* as value. |
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* |
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* @param array $array |
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* @param mixed $default |
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* |
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* @return array |
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*/ |
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public function normalize(array $array, $default) |
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{ |
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$normalized = []; |
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foreach ($array as $key => $value) { |
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if (is_numeric($key)) { |
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$key = $value; |
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$value = $default; |
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} |
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$normalized[$key] = $value; |
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} |
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return $normalized; |
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} |
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/** |
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* Extend one array with another. |
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* |
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* @param array $arrays |
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* |
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* @return array |
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*/ |
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public function extend(array $arrays) |
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{ |
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$merged = []; |
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foreach (func_get_args() as $array) { |
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foreach ($array as $key => $value) { |
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if (is_array($value) && $this->access->has($merged, $key) && is_array($merged[$key])) { |
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$merged[$key] = $this->extend($merged[$key], $value); |
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} else { |
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$merged[$key] = $value; |
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} |
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} |
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} |
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return $merged; |
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} |
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311
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/** |
312
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* Transforms a 1-dimensional array into a multi-dimensional one, |
313
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* exploding keys according to a separator. |
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* |
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* @param array $array |
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* |
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* @return array |
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*/ |
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public function asHierarchy(array $array) |
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{ |
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$hierarchy = []; |
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foreach ($array as $key => $value) { |
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$segments = explode('.', $key); |
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$valueSegment = array_pop($segments); |
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$branch = &$hierarchy; |
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foreach ($segments as $segment) { |
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if (!isset($branch[$segment])) { |
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$branch[$segment] = []; |
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} |
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$branch = &$branch[$segment]; |
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} |
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$branch[$valueSegment] = $value; |
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} |
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339
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return $hierarchy; |
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} |
341
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/** |
343
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* Separates elements from an array into groups. |
344
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* The function maps an element to the key that will be used for grouping. |
345
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* If no function is passed, the element itself will be used as key. |
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* |
347
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* @param array $array |
348
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* @param callable|null $callback |
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* |
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* @return array |
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*/ |
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public function groupBy(array $array, callable $callback = null) |
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{ |
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$callback = $callback ?: function ($value) { |
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return $value; |
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}; |
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358
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return array_reduce( |
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$array, |
360
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function ($buckets, $value) use ($callback) { |
361
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$key = call_user_func($callback, $value); |
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363
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if (!array_key_exists($key, $buckets)) { |
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$buckets[$key] = []; |
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} |
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$buckets[$key][] = $value; |
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369
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return $buckets; |
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}, |
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[] |
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); |
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} |
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375
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/** |
376
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* Flatten a multi-dimensional associative array with dots. |
377
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* |
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* @param array $array |
379
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* @param string $prepend |
380
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* |
381
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* @return array |
382
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*/ |
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public function dot($array, $prepend = '') |
384
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{ |
385
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$cache = serialize(['array' => $array, 'prepend' => $prepend]); |
386
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|
387
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if (array_key_exists($cache, $this->dotted)) { |
388
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return $this->dotted[$cache]; |
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} |
390
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391
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$results = []; |
392
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|
393
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|
View Code Duplication |
foreach ($array as $key => $value) { |
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394
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if (is_array($value)) { |
395
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$results = array_merge($results, $this->dot($value, $prepend . $key . '.')); |
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} else { |
397
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$results[$prepend . $key] = $value; |
398
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} |
399
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} |
400
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|
401
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return $this->dotted[$cache] = $results; |
402
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} |
403
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|
404
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/** |
405
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* Flatten a nested array to a separated key. |
406
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* |
407
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* @param array $array |
408
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* @param string|null $separator |
409
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|
* @param string $prepend |
410
|
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* |
411
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* @return array |
412
|
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*/ |
413
|
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public function flatten(array $array, $separator = null, $prepend = '') |
414
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{ |
415
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$flattened = []; |
416
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417
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View Code Duplication |
foreach ($array as $key => $value) { |
|
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418
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if (is_array($value)) { |
419
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$flattened = array_merge($flattened, $this->flatten($value, $separator, $prepend . $key . $separator)); |
420
|
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} else { |
421
|
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$flattened[$prepend . $key] = $value; |
422
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} |
423
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} |
424
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425
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return $flattened; |
426
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} |
427
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428
|
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/** |
429
|
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* Expand a flattened array with dots to a multi-dimensional associative array. |
430
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* |
431
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* @param array $array |
432
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* @param string $prepend |
433
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* |
434
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* @return array |
435
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*/ |
436
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public function expand(array $array, $prepend = '') |
437
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{ |
438
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$results = []; |
439
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440
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if ($prepend) { |
441
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$prepend .= '.'; |
442
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} |
443
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444
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foreach ($array as $key => $value) { |
445
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if ($prepend) { |
446
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$pos = strpos($key, $prepend); |
447
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448
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if ($pos === 0) { |
449
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$key = substr($key, strlen($prepend)); |
450
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} |
451
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} |
452
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453
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$results = $this->access->set($results, $key, $value); |
454
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} |
455
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456
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return $results; |
457
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} |
458
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459
|
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|
/** |
460
|
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* Reset all numerical indexes of an array (start from zero). |
461
|
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* Non-numerical indexes will stay untouched. Returns a new array. |
462
|
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* |
463
|
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* @param array $array |
464
|
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* @param bool|false $deep |
465
|
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* |
466
|
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* @return array |
467
|
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*/ |
468
|
|
|
public function reset(array $array, $deep = false) |
469
|
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|
{ |
470
|
|
|
$target = []; |
471
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|
|
472
|
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|
foreach ($array as $key => $value) { |
473
|
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|
if ($deep && is_array($value)) { |
474
|
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$value = $this->reset($value); |
475
|
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} |
476
|
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|
|
477
|
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if (is_numeric($key)) { |
478
|
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|
$target[] = $value; |
479
|
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} else { |
480
|
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$target[$key] = $value; |
481
|
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} |
482
|
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} |
483
|
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|
484
|
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return $target; |
485
|
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} |
486
|
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|
487
|
|
|
/** |
488
|
|
|
* Extend one array with another. Non associative arrays will not be merged |
489
|
|
|
* but rather replaced. |
490
|
|
|
* |
491
|
|
|
* @param array $arrays |
492
|
|
|
* |
493
|
|
|
* @return array |
494
|
|
|
*/ |
495
|
|
|
public function extendDistinct(array $arrays) |
|
|
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|
496
|
|
|
{ |
497
|
|
|
$merged = []; |
498
|
|
|
|
499
|
|
|
foreach (func_get_args() as $array) { |
500
|
|
|
foreach ($array as $key => $value) { |
501
|
|
|
if (is_array($value) && $this->access->has($merged, $key) && is_array($merged[$key])) { |
502
|
|
|
if ($this->enumerator->isAssoc($value) && $this->enumerator->isAssoc($merged[$key])) { |
503
|
|
|
$merged[$key] = $this->extendDistinct($merged[$key], $value); |
504
|
|
|
|
505
|
|
|
continue; |
506
|
|
|
} |
507
|
|
|
} |
508
|
|
|
|
509
|
|
|
$merged[$key] = $value; |
510
|
|
|
} |
511
|
|
|
} |
512
|
|
|
|
513
|
|
|
return $merged; |
514
|
|
|
} |
515
|
|
|
|
516
|
|
|
/** |
517
|
|
|
* Sort the array using the given callback. |
518
|
|
|
* |
519
|
|
|
* @param array $array |
520
|
|
|
* @param callable $callback |
521
|
|
|
* @param int $options |
522
|
|
|
* @param bool $descending |
523
|
|
|
* |
524
|
|
|
* @return array |
525
|
|
|
*/ |
526
|
|
|
public function sort(array $array, callable $callback, $options = SORT_REGULAR, $descending = false) |
527
|
|
|
{ |
528
|
|
|
$results = []; |
529
|
|
|
|
530
|
|
|
// First we will loop through the items and get the comparator from a callback |
531
|
|
|
// function which we were given. Then, we will sort the returned values and |
532
|
|
|
// and grab the corresponding values for the sorted keys from this array. |
533
|
|
|
foreach ($array as $key => $value) { |
534
|
|
|
$results[$key] = $callback($value, $key); |
535
|
|
|
} |
536
|
|
|
|
537
|
|
|
$descending ? arsort($results, $options) |
538
|
|
|
: asort($results, $options); |
539
|
|
|
|
540
|
|
|
// Once we have sorted all of the keys in the array, we will loop through them |
541
|
|
|
// and grab the corresponding model so we can set the underlying items list |
542
|
|
|
// to the sorted version. Then we'll just return the collection instance. |
543
|
|
|
foreach (array_keys($results) as $key) { |
544
|
|
|
$results[$key] = $array[$key]; |
545
|
|
|
} |
546
|
|
|
|
547
|
|
|
return $results; |
548
|
|
|
} |
549
|
|
|
|
550
|
|
|
/** |
551
|
|
|
* Recursively sort an array by keys and values. |
552
|
|
|
* |
553
|
|
|
* @param array $array |
554
|
|
|
* |
555
|
|
|
* @return array |
556
|
|
|
*/ |
557
|
|
|
public function sortRecursive(array $array) |
558
|
|
|
{ |
559
|
|
|
foreach ($array as &$value) { |
560
|
|
|
if (is_array($value)) { |
561
|
|
|
$value = $this->sortRecursive($value); |
562
|
|
|
} |
563
|
|
|
} |
564
|
|
|
|
565
|
|
|
// sort associative array |
566
|
|
|
if ($this->enumerator->isAssoc($array)) { |
567
|
|
|
ksort($array); |
568
|
|
|
// sort regular array |
569
|
|
|
} else { |
570
|
|
|
sort($array); |
571
|
|
|
} |
572
|
|
|
|
573
|
|
|
return $array; |
574
|
|
|
} |
575
|
|
|
|
576
|
|
|
/** |
577
|
|
|
* Will turn each element in $arr into an array then appending |
578
|
|
|
* the associated indexs from the other arrays into this array as well. |
579
|
|
|
* |
580
|
|
|
* @param array $array |
581
|
|
|
* @param array $arrays |
582
|
|
|
* |
583
|
|
|
* @return array |
584
|
|
|
*/ |
585
|
|
|
public function zip(array $array, array $arrays) |
|
|
|
|
586
|
|
|
{ |
587
|
|
|
$args = func_get_args(); |
588
|
|
|
array_shift($args); |
589
|
|
|
|
590
|
|
|
foreach ($array as $key => $value) { |
591
|
|
|
$array[$key] = [$value]; |
592
|
|
|
|
593
|
|
|
foreach ($args as $k => $v) { |
594
|
|
|
$array[$key][] = current($args[$k]); |
595
|
|
|
|
596
|
|
|
if (next($args[$k]) === false && $args[$k] !== [null]) { |
597
|
|
|
$args[$k] = [null]; |
598
|
|
|
} |
599
|
|
|
} |
600
|
|
|
} |
601
|
|
|
|
602
|
|
|
return $array; |
603
|
|
|
} |
604
|
|
|
|
605
|
|
|
/** |
606
|
|
|
* Recurse through an array, add the leaf items to the $newArray var |
607
|
|
|
* |
608
|
|
|
* @param array $subject |
609
|
|
|
* @param array &$newArray |
610
|
|
|
* @param array $stack |
611
|
|
|
* |
612
|
|
|
* @return array |
|
|
|
|
613
|
|
|
*/ |
614
|
|
|
private function recurseCollapse(array $subject, array &$newArray, $stack = []) |
615
|
|
|
{ |
616
|
|
|
foreach ($subject as $key => $value) { |
617
|
|
|
$fstack = array_merge($stack, [$key]); |
618
|
|
|
|
619
|
|
|
if (is_array($value)) { |
620
|
|
|
$this->recurseCollapse($value, $newArray, $fstack); |
621
|
|
|
} else { |
622
|
|
|
$top = array_shift($fstack); |
623
|
|
|
$arrayPart = count($fstack) ? '.' . implode('.', $fstack): ''; |
624
|
|
|
$newArray[$top . $arrayPart] = $value; |
625
|
|
|
} |
626
|
|
|
} |
627
|
|
|
} |
628
|
|
|
} |
629
|
|
|
|
This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.
Consider the following example. The parameter
$italy
is not defined by the methodfinale(...)
.The most likely cause is that the parameter was removed, but the annotation was not.