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<?php |
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class HelperArray { |
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/** |
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* Overwrites old array with new |
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*/ |
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const MERGE_OVERWRITE = 0; |
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/** |
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* Merges old array with new with array_merge() |
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* String keys replaced, numeric keys renumbered |
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*/ |
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const MERGE_PHP = 1; |
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/** |
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* Merges old array with new with array_merge_recursive() |
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* String keys replaced, numeric keys renumbered |
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*/ |
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const MERGE_RECURSIVE = 2; |
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/** |
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* Merges old array with new recursive |
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* String keys merged, numeric keys merged |
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*/ |
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const MERGE_RECURSIVE_NUMERIC = 3; |
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/** |
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* No array cloning - just stay with same objects |
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*/ |
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const CLONE_ARRAY_NONE = 0; |
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/** |
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* Clone objects on first level of array |
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*/ |
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const CLONE_ARRAY_SHALLOW = 1; |
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/** |
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* Clone objects recursive on any array level |
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*/ |
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const CLONE_ARRAY_RECURSIVE = 2; |
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/** |
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* Convert $delimiter delimited string to array |
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* |
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* @param mixed $string |
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* @param string $delimiter |
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* |
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* @return array |
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*/ |
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public static function stringToArray($string, $delimiter = ',') { |
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return is_string($string) && !empty($string) ? explode($delimiter, $string) : array(); |
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} |
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/** |
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* Convert single value to array by reference |
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* |
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* @param mixed &$value |
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*/ |
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public static function makeArrayRef(&$value, $index = 0) { |
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if (!is_array($value)) { |
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$value = array($index => $value); |
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} |
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} |
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/** |
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* Convert single value to array |
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* |
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* @param mixed $value |
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* |
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* @return array |
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*/ |
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public static function makeArray($value, $index = 0) { |
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static::makeArrayRef($value, $index); |
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return $value; |
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} |
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/** |
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* Filters array by callback |
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* |
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* @param mixed $array |
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* @param callable $callback |
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* |
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* @return array |
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*/ |
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public static function filter(&$array, $callback) { |
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$result = array(); |
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if (is_array($array) && !empty($array)) { |
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// TODO - array_filter |
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foreach ($array as $value) { |
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if (call_user_func($callback, $value)) { |
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$result[] = $value; |
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} |
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} |
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} |
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return $result; |
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} |
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/** |
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* Filters array by callback |
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* |
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* @param mixed $array |
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* @param callable $callback |
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* @param bool $withKeys |
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* |
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* @return array |
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*/ |
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public static function map(&$array, $callback, $withKeys = false) { |
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$result = array(); |
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if (is_array($array) && !empty($array)) { |
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if ($withKeys) { |
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$result = array_map($callback, $array, array_keys($array)); |
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} else { |
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$result = array_map($callback, $array); |
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} |
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} |
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return $result; |
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} |
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/** |
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* Filter empty() values from array |
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* |
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* @param $array |
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* |
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* @return array |
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*/ |
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public static function filterEmpty($array) { |
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return static::filter($array, 'Validators::isNotEmpty'); |
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} |
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/** |
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* @param string $string |
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* @param string $delimiter |
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* |
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* @return array |
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*/ |
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public static function stringToArrayFilterEmpty($string, $delimiter = ',') { |
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return static::filterEmpty(static::stringToArray($string, $delimiter)); |
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} |
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/** |
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* @param mixed|array &$arrayOld |
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* @param mixed|array $arrayNew |
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* @param int $mergeStrategy - default is HelperArray::MERGE_OVERWRITE |
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*/ |
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public static function merge(&$arrayOld, $arrayNew = array(), $mergeStrategy = self::MERGE_OVERWRITE) { |
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static::makeArrayRef($arrayNew); |
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static::makeArrayRef($arrayOld); |
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switch ($mergeStrategy) { |
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case self::MERGE_PHP: |
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$arrayOld = array_merge($arrayOld, $arrayNew); |
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break; |
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case self::MERGE_RECURSIVE: |
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$arrayOld = array_merge_recursive($arrayOld, $arrayNew); |
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break; |
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case self::MERGE_RECURSIVE_NUMERIC: |
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foreach ($arrayNew as $key => $value) { |
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!isset($arrayOld[$key]) || !is_array($arrayOld[$key]) ? $arrayOld[$key] = $value : self::merge($arrayOld[$key], $value, self::MERGE_RECURSIVE_NUMERIC); |
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} |
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break; |
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default: |
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$arrayOld = $arrayNew; |
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break; |
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} |
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} |
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/** |
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* Checks if key exists in array. If yes - return value on key otherwise return default value |
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* |
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* @param array &$array |
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* @param mixed $key |
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* @param mixed $default |
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* |
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* @return mixed |
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*/ |
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public static function keyExistsOr(&$array, $key, $default) { |
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return array_key_exists($key, $array) ? $array[$key] : $default; |
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} |
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/** |
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* Clone objects in array |
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* |
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* @param array &$array - Any dimensional array with presumed objects in there |
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* @param int $deep - HelperArray::CLONE_ARRAY_xxx constants |
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*/ |
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public static function cloneDeep(&$array, $deep = self::CLONE_ARRAY_RECURSIVE) { |
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if ($deep == self::CLONE_ARRAY_NONE) { |
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return; |
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} |
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foreach ($array as &$value) { |
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if (is_object($value)) { |
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$value = clone $value; |
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} elseif (is_array($value) && $deep == self::CLONE_ARRAY_RECURSIVE) { |
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static::cloneDeep($value, $deep); |
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} |
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} |
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} |
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/** |
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* Repacking array to provided level, removing null elements |
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* |
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* @param array &$array |
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* @param int $level |
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*/ |
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public static function array_repack(&$array, $level = 0) { |
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if (!is_array($array)) { |
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return; |
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} |
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foreach ($array as $key => &$value) { |
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if ($value === null) { |
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unset($array[$key]); |
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} elseif ($level > 0 && is_array($value)) { |
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static::array_repack($value, $level - 1); |
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if (empty($value)) { |
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unset($array[$key]); |
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} |
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} |
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} |
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} |
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/** |
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* Parses array of stringified parameters to array of parameter |
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* |
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* Stringified parameter is a string of "<parmName><delimeter><paramValue>" |
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* |
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* @param array|string $array |
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* @param string $delimiter |
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* |
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* @return array |
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*/ |
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public static function parseParamStrings($array, $delimiter = '=') { |
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!is_array($array) ? $array = array((string)$array) : false; |
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$result = array(); |
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foreach ($array as $param) { |
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$exploded = explode($delimiter, $param); |
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$paramName = $exploded[0]; |
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unset($exploded[0]); |
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$result[$paramName] = implode($delimiter, $exploded); |
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} |
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return $result; |
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} |
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/** |
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* Finds maximum value of field in subarrays |
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* |
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* @param array[] $array |
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* @param mixed $fieldName |
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* |
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* @return float|null |
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*/ |
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public static function maxValueByField(&$array, $fieldName) { |
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return array_reduce($array, function ($carry, $item) use ($fieldName) { |
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if(is_array($item) && isset($item[$fieldName]) && (!isset($carry) || $carry < $item[$fieldName])) { |
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$carry = $item[$fieldName]; |
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} |
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return $carry; |
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}); |
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} |
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/** |
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* @param $array |
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* @param $fieldName |
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*/ |
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public static function topRecordsByField(&$array, $fieldName) { |
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$maxValue = self::maxValueByField($array, $fieldName); |
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return |
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array_reduce($array, |
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function ($carry, $item) use (&$fieldName, $maxValue) { |
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if(is_array($item) && isset($item[$fieldName]) && $item[$fieldName] == $maxValue) { |
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$carry[] = $item; |
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} |
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return $carry; |
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}, |
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array() |
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); |
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} |
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294
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public static function intersectByKeys(array &$array1, array &$array2) { |
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return array_uintersect_assoc($array1, $array2, function ($a, $b) {return 0;}); |
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} |
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298
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/** |
299
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* Get first key of array |
300
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* Polyfill until PHP 7.3 |
301
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* |
302
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* @param array $array |
303
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* |
304
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* @return mixed|null |
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*/ |
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public static function array_key_first(&$array) { |
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if (!is_array($array)) { |
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return null; |
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} |
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reset($array); |
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312
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return key($array); |
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} |
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315
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} |
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