private function __construct(){
}
static function getObj(){
if(is_null(self::$obj)){
self::$obj = new $e();
}
return self::$obj;
}
}
$d = e::getObj();
$d->uname = 100;
echo $d->uname;
echo '<br />';
$e = e::getObj();
echo $e->uname;
echo '<br />';
$e->uname=200;
echo $e->uname;
echo '<br />';
echo $d->uname;
/*
class e{
//服务于对象的
function __construct(){
}
//服务于类的
static function __construct(){
