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<?php
/*
  * PHP100Job v1.0
  * Programmer : Msn/QQ haowubai@hotmail.com (925939)
  * www.php100.com Develop a project PHP - MySQL - Apache
  * Window 2003 - Preferences - PHPeclipse - PHP - Code Templates
  */
include ( "conn.php" );
 
   if ( $_GET [out]){
       setcookie( "cookie" ,  "out" );
     echo  "<script language=\"javascript\">location.href='login.php';</script>" ;
   }
 
 
   if ( $_POST [id]== 'admin' ){
     $pw =md5( $_POST [pw]);
     if ( $pw == 'e1bfd762321e409cee4ac0b6e841963c' ){
      setcookie( "cookie" ,  "ok" );
        echo  "<script language=\"javascript\">location.href='login.php';</script>" ;
     }
   }
include ( "head.php" );
if ( $_COOKIE [ 'cookie' ]!= 'ok' ){
?>
 
<SCRIPT language=javascript>
function  Checklogin()
{
     if  (myform.id.value== "" )
     {
         alert( "请填写登录名" );
         myform.id.focus();
         return  false;
     }
         if  (myform.pw.value== "" )
     {
         alert( "密码不能为空" );
         myform.pw.focus();
         return  false;
     }
}
</SCRIPT>
 
<form action= ""  method= "post"  name= "myform"  onsubmit= "return Checklogin();" >
   ID：<input type= "text"  name= "id"  /><br>
   PW：<input type= "password"  name= "pw"  /> <input type= "submit"  name= "submit"  value= "登陆" />
   </form>
<?
} else {
?>
     <a href= '?out=login' >退出</a>
     
     //<a href='?out=login'>就是给当前页面提交一个参数， 参数名为'out' ，参数值为login
     
     
<?
}
?>