swich case 例子，方便以后自己用

<?php
	session_start();
	header("content-type:text/html;charset=utf-8 ");
		require ("../config.php");
		require ("../class.php");
		//鏍规嵁action鍒ゆ柇
		switch($_GET['action']){

		//------------------鍒ゆ柇鐧婚檰------------------
		case "login";
		$name = $_POST['name'];
		$password=$_POST['password'];
		$sql="select name , password from user where name='$name'&& password='$password' ";
		$row=$db->query($sql);
		if($db->mysql_nums($row)){
		$rult=$db->mysql_row($row);
			$_SESSION['name']=$rult[0];
			echo $_SESSION['name'];
			header("Location:main.php");
		}else{
			echo "鐧婚檰澶辫触";
			header("Location:./");
		}
		//echo $name ;

		break ;

		//---------------------娉ㄥ唽------------------------
		case "add";
		//echo "book";
		$name     = $_POST['name'];
		$password = $_POST['password'];
		$mail     = $_POST['mail'];
		$xie      = $_POST['xie'];
		$diz      = $_POST['diz'];
		$number   = $_POST['number'];
		$db= new db ;
		$db->connect_db($dbhost,$dbuser,$dbpassword,$dbname) ;
		//insert
		$sql="insert into user set name='$name' , password='$password' , mail='$mail' , xie='$xie' , diz='$diz' , number=$number";
		//$sql="INSERT INTO `user` SET `name`='$name', `password`='$password', `mail`='$mail', `xie`='$xie', `diz`='$diz', `number`=$number";
		//echo "ok";
		if($db->query($sql)){
		//session_register("user");
		$_SESSION['user']=$name ;
		//$user=$_SESSION['user'];
		//header("location: ".$_SERVER["HTTP_REFERER"]);
		header("Location:indexlogin.php");
		}else{
			echo "娉ㄥ唽澶辫触";

		}
		break;

		//-----------------------淇敼鐢ㄦ埛--------------------
		case "edituser";
		//echo "book";
		$id     = $_POST['id'];
		$name     = $_POST['name'];
		$password = $_POST['password'];
		$mail     = $_POST['mail'];
		$xie      = $_POST['xie'];
		$diz      = $_POST['diz'];
		$number   = $_POST['number'];
		$db= new db ;
		$db->connect_db($dbhost,$dbuser,$dbpassword,$dbname) ;
		//update
		$sql="update user set name='$name' , password='$password' , mail='$mail' , xie='$xie' , diz='$diz' , number=$number where id=$id";

		if($db->query($sql)){
		//session_register("user");

		$_SESSION['user']=$name ;
		//$user=$_SESSION['user'];
		//header("location: ".$_SERVER["HTTP_REFERER"]);
		header("Location:./userlist.php");
		}else{
			echo "淇敼澶辫触";
		}
		break;


		//-----------------淇敼鏂囦欢-------------------
		case "editfile";
		//echo "book";
		$id     = $_POST['id'];
		$cat_bigId     = $_POST['cat_bigId'];
		$cat_sId = $_POST['cat_sId'];
		$filename     = $_POST['filename'];
		$textname      = $_POST['textname'];
		//$diz      = $_POST['diz'];
		//$number   = $_POST['number'];
		$db= new db ;
		$db->connect_db($dbhost,$dbuser,$dbpassword,$dbname) ;
		//update
		$sql="update file set cat_bigId='$cat_bigId' , cat_sId='$cat_sId' , filename='$filename' , textname='$textname'  where id=$id";

		if($db->query($sql)){
		//session_register("user");

		$_SESSION['user']=$name ;
		//$user=$_SESSION['user'];
		//header("location: ".$_SERVER["HTTP_REFERER"]);
		header("Location:./filelist.php");
		}else{
			echo "淇敼澶辫触";
		}
		break;

		//---------------瀹夊叏閫€鍑?-------------
		case "out";
		session_unset();
		header("Location:admin/login.php");
		default:
			header("Location:./login.php");


	}
?>