(PHP 5 >= 5.5.0, PHP 7)
A subclass of IntlBreakIterator that encapsulates ICU break iterators whose behavior is specified using a set of rules. This is the most common kind of break iterators.
These rules are described in the » ICU Boundary Analysis User Guide.
$key_type
= IntlPartsIterator::KEY_SEQUENTIAL
) : IntlPartsIterator