(PHP 5 >= 5.0.0, PHP 7) Move forward to next element

(PHP 5 >= 5.1.0, PHP 7) String representation of object

(PHP 5 >= 5.0.0, PHP 7) Assign a value to the specified offset

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

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

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

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

(PHP 5 >= 5.0.0, PHP 7) Whether an offset exists

(PHP 5 >= 5.0.0, PHP 7) Unset an offset abstract

(PHP 7) Gets the line on which the object was instantiated