mb_regex_set_options Set/Get the default options for mbregex functions &reftitle.description; stringmb_regex_set_options stringoptionsmb_regex_set_options() Sets the default options described by options for multibyte regex functions. &reftitle.parameters; options The options to set. This is a a string where each character is an option. To set a mode, the mode character must be the last one set, however there can only be set one mode but multiple options. Option Meaning i Ambiguity match on x Enables extended pattern form m '.' matches with newlines s '^' -> '\A', '$' -> '\Z' p Same as both the m and s options l Finds longest matches n Ignores empty matches e eval resulting code Mode Meaning j Java (Sun java.util.regex) u GNU regex g grep c Emacs r Ruby z Perl b POSIX Basic regex d POSIX Extended regex &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