infoweb\cms\helpers\ArrayHelper::indexRecursive PHP Method

ArrayHelper Class Documentation ファイルを表示 Open project: infoweb-internet-solutions/yii2-cms

indexRecursive() public static method

The input array should be multidimensional or an array of objects. The key can be a key name of the sub-array, a property name of object, or an anonymous function which returns the key value given an array element. If a key value is null, the corresponding array element will be discarded and not put in the result. For example, ~~~ $array = [ ['id' => '123', 'data' => 'abc'], ['id' => '345', 'data' => 'def'], ]; $result = ArrayHelper::index($array, 'id'); the result is: [ '123' => ['id' => '123', 'data' => 'abc'], '345' => ['id' => '345', 'data' => 'def'], ] using anonymous function $result = ArrayHelper::index($array, function ($element) { return $element['id']; }); ~~~

public static indexRecursive ( array $array, string \| Closure $key ) : array
$array	array	the array that needs to be indexed
$key	string \| Closure	the column name or anonymous function whose result will be used to index the array
return	array	the indexed array

    public static function indexRecursive($array, $key)
    {
        $result = [];
        foreach ($array as $element) {
            $value = static::getValue($element, $key);
            $result[$value][] = $element;
        }
        return $result;
    }

ArrayHelper

indexRecursive