(PHP 5 >= 5.5.0, PHP 7) Throw an exception into the generator

(PHP 5 >= 5.5.0, PHP 7) Resume execution of the generator

(PHP 5 >= 5.5.0, PHP 7) Send a value to the generator

(PHP 5 >= 5.5.0, PHP 7) Serialize callback

(PHP 5 >= 5.5.0, PHP 7) Check if the iterator has been closed

(PHP 5 >= 5.5.0, PHP 7) Get the yielded key

(PHP 5 >= 5.5.0, PHP 7) Get the yielded value

(PHP 5 >= 5.5.0, PHP 7) Rewind the iterator

(PHP 7) Get the return value of a generator public