class name{
public $n="";
private $u="";
public function name() {
$n="233";
$u="23333";
}
public function rename($newn){
$this->n=$newn;//this表示这个类
}
}

$obj=new name();
echo $obj->n;

$obj=new name();
echo $obj->u;

public static $nm ="2333333333333333" ;

echo name::$nm;

class name{
public $n="";
private $u="";
public function __construct() {
$n="233";
$u="23333";
}
public function rename($newn){
$this->n=$newn;
}
}

__construct($name="",$sex="man",$age=0){}

$obj= new name("我","man",28);