- /**
- * Casts MarkupInterface objects into strings.
- *
- * @param string|array $value
- * The value to act on.
- *
- * @return mixed
- * The input value, with MarkupInterface objects casted to string.
- */
- protected static function castSafeStrings($value) {
- if ($value instanceof MarkupInterface) {
- $value = (string) $value;
- }
- if (is_array($value)) {
- array_walk_recursive($value, function (&$item) {
- if ($item instanceof MarkupInterface) {
- $item = (string) $item;
- }
- });
- }
- return $value;
- }