php中登录后跳转回原来要访问的页面实例_PHP教程

$url = $_SERVER['HTTP_REFERER'];
header("location:$url");

protected function checkLogin() {
if (没有登录){
$thisurl = "http://".$_SERVER["HTTP_HOST"].$_SERVER['PHP_SELF'];//当前URL
$thisurl = urlencode($thisurl);//这里要注意需要把获取到的url转码，不然后面不好传递URL
redirect("http://".$_SERVER["HTTP_HOST"]."/cityosweb/default.php/Index/login?url=".$thisurl);
}
}

$this->checkLogin();

public function login() {
$url = $_GET['url'];
$this->assign('url',$url);
$this->assign('title','Login');
$this->display('user/reg_new.html');
}