Sanitize the value for runtime storage and return it.
- Implementation is required by Fieldtype modules, as this method is abstract.
- This method should remove anything that's invalid from the given value. If it can't be sanitized, it should be made blank.
- This method filters every value set to a Page instance, so it should do it's thing as quickly as possible.
$string = $fieldtype->sanitizeValue(Page $page, Field $field, $value);
|string, int, WireArray, object|
API reference based on ProcessWire core version 3.0.160