本文实例讲述了php实现的简单检验登陆类。分享给大家供大家参考。具体如下：

<?phpclass checklogin{  var $name;  var $pwd;  function __construct($username,$password)  {   $this->name=$username;   $this->pwd=$password;  }  function checkinput()  {   global $db;   $sql="select * from tb_manager where name="$this->name" and pwd="$this->pwd"";   $res=$db->query($sql);   $info=$db->fetch_array($res);    if($info["name"]==$this->name and $info["pwd"]==$this->pwd)   {     $_SESSION[admin_name]=$info[name];     $_SESSION[pwd]=$info[pwd];     echo "<script>alert("登录成功！);window.location.href="index.php";</script>";   }   else   {     echo "<script language="javascript">alert("登录失败！");history.back();</script>";     exit;   }  }}?>

希望本文所述对大家的php程序设计有所帮助。