(PHP 5 >= 5.3.0, PHP 7) Returns the size of the array

(PHP 5 >= 5.3.0, PHP 7) Import a PHP array in a

(PHP 5 >= 5.3.0, PHP 7) Rewind iterator back to the start

(PHP 5 >= 5.1.0, PHP 7) Portable file locking

(PHP 5 >= 5.1.2, PHP 7) Register given function as __autoload() implementation

(PHP 5 >= 5.3.0, PHP 7) Serialize an ArrayObject

(PHP 5 >= 5.0.0, PHP 7) Returns the value at the specified index

(PHP 5 >= 5.3.0, PHP 7) Return current array entry

(PHP 5 >= 5.1.0, PHP 7) Begin children public

(PHP 5 >= 5.3.0, PHP 7) Return current node index