mb_regex_set_options Set/Get the default options for mbregex functions &reftitle.description; stringmb_regex_set_options stringoptions"msr" Sets the default options described by options for multibyte regex functions. &reftitle.parameters; options The options to set. &reftitle.returnvalues; The previous options. If options is omitted, it returns the string that describes the current options. &reftitle.seealso; mb_split mb_ereg mb_eregi