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<?php |
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namespace SimpleArrayLibrary\Categories; |
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use InvalidArgumentException; |
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trait Counters |
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{ |
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/** |
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* Counts maximum array depth recursively |
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* |
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* @param array $array |
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* |
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* @return int |
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*/ |
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public static function countMaxDepth(array $array) |
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{ |
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$maxDepth = 1; |
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foreach ($array as $element) { |
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$depth = 1; |
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if (is_array($element)) { |
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$depth += self::countMaxDepth($element); |
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} |
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if ($depth > $maxDepth) $maxDepth = $depth; |
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} |
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return $maxDepth; |
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} |
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/** |
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* Counts maximum array depth iteratively |
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* |
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* @param array $array |
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* |
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* @return int |
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*/ |
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public static function countMaxDepthIterative(array $array) |
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{ |
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$copy = $array; |
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$maxDepth = 1; |
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foreach ($copy as $element) { |
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$depth = 1; |
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while (!empty($element)) { |
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if (is_array($element)) { |
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++$depth; |
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$tmp = array_shift($element); |
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if (is_array($tmp)) { |
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array_push($element, array_shift($tmp)); |
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} |
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} else { |
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break; |
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} |
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} |
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if ($depth > $maxDepth) { |
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$maxDepth = $depth; |
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} |
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} |
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return $maxDepth; |
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} |
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/** |
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* Counts maximum array depth |
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* |
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* @param mixed $potentialArray |
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* @param int $depth |
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* |
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* @return int |
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* @throws InvalidArgumentException |
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*/ |
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public static function countMinDepth($potentialArray, $depth = 0) |
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{ |
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// validation, must be positive int or 0 |
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if (!self::isLogicallyCastableToInt($depth)) { |
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throw new InvalidArgumentException('Depth parameter must be non-negative integer'); |
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} |
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if ($depth < 0) { |
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throw new InvalidArgumentException('Depth parameter must be non-negative integer'); |
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} |
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$return = $depth; |
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if (is_array($potentialArray)) { |
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$return++; |
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$childrenDepths = array(); |
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foreach ($potentialArray as $element) { |
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$childrenDepths[] = self::countMinDepth($element, $return); |
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} |
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$return = empty($childrenDepths) ? $return : min($childrenDepths); |
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} |
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return $return; |
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} |
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} |
ajant /
SimpleArrayLibrary
