phplogin.php

<?php

/******** 登入畫面 login.php ********/

if(empty($_SESSION['login_success']))
    $_SESSION['login_success'] = "";

if( $_SESSION['login_success'] == "true" )
{
  header("Location: index.php");
	exit();
}

/******** 處理登入 login_proc.php ********/

$_SESSION['login_success'] = "true"; 

/******** 每頁都要 include 的檢查器 ********/
session_start();
if( $_SESSION['login_success'] != "true" || empty($_SESSION['login_success']) )
{	
	// 取得當前頁面URL
	$protocol = ((!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off') || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
	$nowURL = urldecode($protocol.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);
	// 傳給login.php
	header("Location: login.php?ref=$nowURL");
	exit();
}

?>