v斌v

摘要： class yunsuan { public $a; public $b; function suan() { echo "对两个数进行运算"; } } class jia extends yunsuan { function suan() { return $this->a+$this->b; } } c... 阅读全文

摘要： class Ren { public $name; private static $dx;//存贮对象 private function __construct() { } public static function duixiang() { if (empty(self::$dx)) { se... 阅读全文