(PHP 5 >= 5.4.0, PHP 7) Returns current regular expression
(PHP 5 >= 5.2.0, PHP 7) Returns operation mode.
(PHP 5 >= 5.2.0, PHP 7) Returns the regular expression flags.
(PHP 5 >= 5.2.0, PHP 7) Create a new RegexIterator
(PHP 5 >= 5.2.0, PHP 7) Sets the operation mode.
(PHP 5 >= 5.2.0, PHP 7) Get accept status
(PHP 5 >= 5.2.0, PHP 7) Sets the flags. public
(PHP 5 >= 5.2.0, PHP 7) Get flags public int
(PHP 5 >= 5.2.0, PHP 7) Sets the regular expression flags.