function Flatten::transform

Flatten nested array values to single array values.

For example, [[1, 2, [3, 4]]] becomes [1, 2, 3, 4].

Overrides ProcessPluginBase::transform

File

core/modules/migrate/src/Plugin/migrate/process/Flatten.php, line 52

Class

Flatten

Flattens the source value.

Namespace

Code

public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
    if (!is_array($value) && !is_object($value)) {
        $type = gettype($value);
        throw new MigrateException(sprintf("Input should be an array or an object, instead it was of type '%s'", $type));
    }
    return iterator_to_array(new \RecursiveIteratorIterator(new \RecursiveArrayIterator($value)), FALSE);
}