请教大家一个关于php类的问题

<?php class test{    public $a = include('./2.php');	  	function testa()	{	   print_r( $this->a);		}}$test = new test;$test->testa();?>

<?php  return array('status'=>1);?>

class test{    public $a;    function test() {      $this->a =  = include('./2.php');    }    function testa()    {       print_r( $this->a);         }}

class test{    public $a;     public function __construct() {      $this->a = include('./2.php');    }     function testa()    {       print_r( $this->a);          }}