The strings will be compared using the options already specified.
Список параметров
locale
The locale containing the required collation rules. Special values for
locales can be passed in - if null is passed for the locale, the
default locale collation rules will be used. If empty string ("") or
"root" are passed, UCA rules will be used.
Возвращаемые значения
Return new instance of Collator object, or NULL
on error.