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mb_regex_set_options
Set/Get the default options for mbregex functions
(PHP 4 >= 4.3.0, PHP 5)
string mb_regex_set_options ( [string options] )
mb_regex_set_options() sets the default options described by options for multibyte regex functions.
Returns the previous options. If options is omitted, it returns the string that describes the current options.
See also mb_split(), mb_ereg() and mb_eregi()