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<?php |
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/* |
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* Collection library for PHP |
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* |
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* @link https://github.com/hiqdev/php-collection |
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* @package php-collection |
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* @license BSD-3-Clause |
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* @copyright Copyright (c) 2015-2016, HiQDev (http://hiqdev.com/) |
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*/ |
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namespace hiqdev\php\collection; |
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/** |
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* Array Helper. |
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* |
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* @author Andrii Vasyliev <[email protected]> |
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*/ |
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class ArrayHelper |
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{ |
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/** |
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* Recursive safe merge. |
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* Based on Yii2 yii\helpers\BaseArrayHelper::merge. |
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* |
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* Merges two or more arrays into one recursively. |
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* If each array has an element with the same string key value, the latter |
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* will overwrite the former (different from array_merge_recursive). |
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* Recursive merging will be conducted if both arrays have an element of array |
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* type and are having the same key. |
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* For integer-keyed elements, the elements from the latter array will |
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* be appended to the former array. |
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* |
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* @param array $a array to be merged to |
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* @param array $b array to be merged from |
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* @return array the merged array |
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*/ |
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public static function merge($a, $b) |
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{ |
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$args = func_get_args(); |
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$res = array_shift($args); |
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foreach ($args as $items) { |
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if (!is_array($items)) { |
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continue; |
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} |
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foreach ($items as $k => $v) { |
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if (is_int($k)) { |
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if (isset($res[$k])) { |
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$res[] = $v; |
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} else { |
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$res[$k] = $v; |
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} |
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} elseif (is_array($v) && isset($res[$k]) && is_array($res[$k])) { |
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$res[$k] = self::merge($res[$k], $v); |
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} else { |
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$res[$k] = $v; |
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} |
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} |
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} |
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return $res; |
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} |
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/** |
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* Get specified items as array. |
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* @param mixed $keys specification |
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* @return array |
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*/ |
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public static function getItems($array, $keys = null) |
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{ |
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if (is_null($keys)) { |
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return $array; |
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} elseif (is_scalar($keys)) { |
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$keys = [$keys => $array[$keys]]; |
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} |
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$res = []; |
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foreach ($keys as $k) { |
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if (array_key_exists($k, $array)) { |
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$res[$k] = $array[$k]; |
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} |
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} |
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return $res; |
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} |
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/** |
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* Inserts items in front of array. |
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* rough method: unset and then set, think of better. |
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*/ |
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public static function insertLast(array $array, array $items) |
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{ |
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foreach ($items as $k => $v) { |
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unset($array[$k]); |
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} |
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foreach ($items as $k => $v) { |
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$array[$k] = $v; |
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} |
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2 |
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return $array; |
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2 |
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} |
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/** |
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* Inserts items in front of array. |
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* rough method: unset and then set, think of better. |
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*/ |
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public static function insertFirst(array $array, array $items) |
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{ |
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foreach (array_keys($items) as $k) { |
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unset($array[$k]); |
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} |
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$array = array_merge($items, $array); |
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return $array; |
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} |
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/** |
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* Inserts items inside of array. |
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* rough method: unset and then set, think of better. |
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* |
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* @param array $array source array |
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* @param array $items array of items. |
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* @param string|array $where where to insert |
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* @return array new items list |
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* @see add() |
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*/ |
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public static function insertInside(array $array, $items, $where) |
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{ |
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foreach ($items as $k => $v) { |
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unset($array[$k]); |
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} |
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$before = self::prepareWhere($array, isset($where['before']) ? $where['before'] : null); |
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$after = self::prepareWhere($array, isset($where['after']) ? $where['after'] : null); |
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$new = []; |
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$found = false; |
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/// TODO think of realizing it better |
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foreach ($array as $k => $v) { |
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View Code Duplication |
if (!$found && $k === $before) { |
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foreach ($items as $i => $c) { |
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$new[$i] = $c; |
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} |
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$found = true; |
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} |
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$new[$k] = $v; |
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View Code Duplication |
if (!$found && $k === $after) { |
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foreach ($items as $i => $c) { |
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$new[$i] = $c; |
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} |
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$found = true; |
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} |
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} |
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if (!$found) { |
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foreach ($items as $i => $c) { |
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$new[$i] = $c; |
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} |
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} |
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return $new; |
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} |
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/** |
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* Internal function to prepare where list for insertInside. |
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* |
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* @param array $array source array |
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* @param array|string $list array to convert |
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* @return array |
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*/ |
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protected static function prepareWhere(array $array, $list) |
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{ |
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if (!is_array($list)) { |
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$list = [$list]; |
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} |
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foreach ($list as $v) { |
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if (array_key_exists($v, $array)) { |
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return $v; |
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} |
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} |
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return null; |
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} |
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/** |
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* Recursively removes duplicate values from non-associative arrays. |
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*/ |
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public static function unique($array) |
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{ |
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$suitable = true; |
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foreach ($array as $k => &$v) { |
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if (is_array($v)) { |
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$v = self::unique($v); |
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} elseif (!is_int($k)) { |
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$suitable = false; |
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} |
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} |
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return $suitable ? self::uniqueFlat($array) : $array; |
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} |
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/** |
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* Non-recursively removes duplicate values from non-associative arrays. |
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*/ |
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public static function uniqueFlat($array) |
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{ |
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$uniqs = []; |
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$res = []; |
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foreach ($array as $k => $v) { |
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$uv = var_export($v, true); |
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if (array_key_exists($uv, $uniqs)) { |
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continue; |
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} |
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$uniqs[$uv] = 1; |
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$res[$k] = $v; |
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} |
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return $res; |
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} |
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public static function toArray($object) |
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{ |
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$res = (array) $object; |
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foreach ($res as &$v) { |
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if (is_object($v)) { |
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$v = self::toArray($v); |
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} |
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} |
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return $res; |
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} |
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} |
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hiqdev /
php-collection
