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<?php |
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/** |
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* @copyright Copyright (c) Flipbox Digital Limited |
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* @license https://github.com/flipbox/skeleton/blob/master/LICENSE |
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* @link https://github.com/flipbox/skeleton |
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*/ |
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namespace Flipbox\Skeleton\Helpers; |
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/** |
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* @author Flipbox Factory <[email protected]> |
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* @since 2.0.0 |
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*/ |
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class ArrayHelper |
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{ |
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/** |
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* Builds a map (key => value) from a multidimensional array or an array of objects. |
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* |
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* @param $array |
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* @param string|\Closure $from |
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* @param string|\Closure $to |
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* @param string|\Closure|null $group |
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* @return array |
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*/ |
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public static function map($array, $from, $to, $group = null) |
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{ |
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$result = []; |
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foreach ($array as $element) { |
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$key = static::getValue($element, $from); |
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$value = static::getValue($element, $to); |
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if ($group !== null) { |
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$result[static::getValue($element, $group)][$key] = $value; |
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} else { |
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$result[$key] = $value; |
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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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* Merges two or more arrays into one recursively. |
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* |
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* @param $a |
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* @param $b |
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* @return array |
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*/ |
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public static function merge($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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while (!empty($args)) { |
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$next = array_shift($args); |
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foreach ($next 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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* Checks if the given array contains the specified key. |
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* |
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* @param $key |
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* @param $array |
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* @param bool $caseSensitive |
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* @return bool |
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*/ |
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public static function keyExists($key, $array, $caseSensitive = true) |
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{ |
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if ($caseSensitive) { |
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return array_key_exists($key, $array); |
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} else { |
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foreach (array_keys($array) as $k) { |
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if (strcasecmp($key, $k) === 0) { |
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return true; |
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} |
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} |
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return false; |
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} |
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} |
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/** |
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* Indexes an array according to a specified key. |
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* |
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* @param $array |
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* @param $key |
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* @return array |
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*/ |
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public static function index($array, $key) |
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{ |
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$result = []; |
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foreach ($array as $element) { |
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$value = static::getValue($element, $key); |
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$result[$value] = $element; |
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} |
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return $result; |
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} |
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/** |
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* Converts an object or an array of objects into an array. |
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* |
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* @param $object |
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* @param array $properties |
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* @param bool $recursive |
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* @return array |
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*/ |
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public static function toArray($object, $properties = [], $recursive = true) |
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{ |
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if (is_array($object)) { |
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if ($recursive) { |
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foreach ($object as $key => $value) { |
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if (is_array($value) || is_object($value)) { |
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$object[$key] = static::toArray($value, $properties, true); |
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} |
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} |
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} |
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return $object; |
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} elseif (is_object($object)) { |
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if (!empty($properties)) { |
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$className = get_class($object); |
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if (!empty($properties[$className])) { |
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$result = []; |
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foreach ($properties[$className] as $key => $name) { |
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if (is_int($key)) { |
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$result[$name] = $object->$name; |
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} else { |
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$result[$key] = static::getValue($object, $name); |
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} |
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} |
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return $recursive ? static::toArray($result, $properties) : $result; |
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} |
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} |
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$result = []; |
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foreach ($object as $key => $value) { |
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$result[$key] = $value; |
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} |
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return $recursive ? static::toArray($result) : $result; |
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} else { |
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return [$object]; |
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} |
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} |
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/** |
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* Retrieves the value of an array element or object property with the given key or property name. |
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* |
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* @param $array |
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* @param $key |
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* @param null $default |
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* @return mixed|null |
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*/ |
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public static function getValue($array, $key, $default = null) |
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{ |
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if ($key instanceof \Closure) { |
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return $key($array, $default); |
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} |
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if (is_array($key)) { |
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$lastKey = array_pop($key); |
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foreach ($key as $keyPart) { |
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$array = static::getValue($array, $keyPart); |
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} |
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$key = $lastKey; |
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} |
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if (is_array($array) && array_key_exists($key, $array)) { |
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return $array[$key]; |
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} |
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if (($pos = strrpos($key, '.')) !== false) { |
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$array = static::getValue($array, substr($key, 0, $pos), $default); |
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$key = substr($key, $pos + 1); |
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} |
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if (is_object($array)) { |
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return $array->$key; |
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} elseif (is_array($array)) { |
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return array_key_exists($key, $array) ? $array[$key] : $default; |
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} else { |
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return $default; |
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} |
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} |
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/** |
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* Removes an item from an array and returns the value. |
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* |
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* @param $array |
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* @param $key |
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* @param null $default |
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* @return mixed|null |
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*/ |
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public static function remove(&$array, $key, $default = null) |
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{ |
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if (is_array($array) && (isset($array[$key]) || array_key_exists($key, $array))) { |
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$value = $array[$key]; |
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unset($array[$key]); |
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return $value; |
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} |
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return $default; |
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} |
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/** |
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* Returns the first value in a given array. |
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* |
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* @param $arr |
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* @return mixed |
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*/ |
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public static function getFirstValue($arr) |
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{ |
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if (count($arr)) { |
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if (isset($arr[0])) { |
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return $arr[0]; |
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} else { |
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$keys = array_keys($arr); |
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return $arr[$keys[0]]; |
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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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* Finds matching values from two arrays |
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* |
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* @param array $keys |
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* @param array $array |
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* @return array |
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*/ |
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public static function matches($keys = [], $array = []): array |
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{ |
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if (!empty($keys) && !empty($array)) { |
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$matchingProperties = []; |
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foreach ($keys as $property) { |
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if ($matchedAttribute = static::getValue($array, $property)) { |
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$matchingProperties[$property] = $matchedAttribute; |
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} |
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} |
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return $matchingProperties; |
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} |
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return $array; |
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} |
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/** |
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* @param array $array |
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* @param $findKey |
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* @param $newKey |
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* @param $newValue |
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* @return array|bool |
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*/ |
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public static function insertBefore(array $array, $findKey, $newKey, $newValue) |
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{ |
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if (array_key_exists($findKey, $array)) { |
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$new = array(); |
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foreach ($array as $k => $value) { |
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if ($k === $findKey) { |
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$new[$newKey] = $newValue; |
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} |
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$new[$k] = $value; |
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} |
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return $new; |
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} |
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return false; |
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} |
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/** |
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* @param array $array |
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* @param $findKey |
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* @param $newKey |
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* @param $newValue |
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* @return array|bool |
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*/ |
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public static function insertAfter(array $array, $findKey, $newKey, $newValue) |
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{ |
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if (array_key_exists($findKey, $array)) { |
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$new = array(); |
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foreach ($array as $k => $value) { |
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$new[$k] = $value; |
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if ($k === $findKey) { |
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$new[$newKey] = $newValue; |
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} |
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} |
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return $new; |
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} |
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return false; |
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} |
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} |
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This check looks from parameters that have been defined for a function or method, but which are not used in the method body.