Description:
------------
Hello,

As I know, array() should not accept comma after the last element but it does and var_export generates it the same way. If it accepts this syntax, it could be mentioned in the documentation.

Reproduce code:
---------------
echo phpversion()."\n";
$array = array(
	'1' => 'one',
	'2' => 'two',
	'3' => 'three', // <-comma
);
var_export($array);


Expected result:
----------------
Parse error saying unexpected '(' or something like this.

Actual result:
--------------
4.3.11
array (
  1 => 'one',
  2 => 'two',
  3 => 'three',
)