Description:
------------
ArrayAccess should force the implementation of append to cover the case of $array[] = somevalue so that one can properly handle values appended in this manner. Additionally, most internal classes implementing ArrayAccess add their own append method anyway and this would provide some sort of naming standard.

Examples of conflicts in naming include ArrayObject::append() and SplDoublyLinkedList::push()

Reproduce code:
---------------
<?php
class MyArrayObject extends ArrayObject
{
	function append( $v )
	{
		//Should print the value if value appended
		var_dump( 'Append:', $value );
	}

	function offsetSet( $k, $v )
	{
		//Will Print OffsetSet: \n NULL \n NULL - See http://bugs.php.net/bug.php?id=49537
		var_dump( 'offsetSet:', $k, $value );
	}

}

$test = new MyArrayObject();
$test[] = 'test';
?>

Expected result:
----------------
MyArrayObject::append() called rather than MyArrayObject::offsetSet()

Actual result:
--------------
MyArrayObject::offsetSet() is called