PHP-IteratorAggregate interface

: This article mainly introduces the PHP-IteratorAggregate interface. if you are interested in the PHP Tutorial, refer to it. PHP IteratorAggregate is also called an aggregate iterator. It provides an interface for creating an external iterator. the interface abstract is as follows:

IteratorAggregate extends Traversable {abstract public Traversable getIterator ( void )}

When implementing the getIterator method, you must return an instance of classes that implement the Iterator interface.

Example:

 Last = "last property";} public function getIterator () {return new ArrayIterator ($ this) ;}$ obj = new myData; foreach ($ obj as $ key => $ value) {var_dump ($ key, $ value); echo'
'; // Linux: echo "\ n" ;}?>

The ArrayIterator iterator encapsulates objects or arrays as a class that can be operated through foreach. the specific SPL iterator will be described later.

The above describes the PHP-IteratorAggregate interface details, including some content, hope to be helpful to friends who are interested in PHP tutorials.