PHP检测账号密码是否匹配：
推荐：php服务器
HTML代码：
PHP代码：
where($where)->select();
if($users){
$_SESSION['id']=$users['id'];
$_SESSION['user_shell']=md5($users['username'].$users['password']);
$this->redirect('Index/index');
}else{
echo "";
}
}else{
$this->display();
}
}
public function lusername(){
$where['username']=I('username');
$users=M('users')->where($where)->select();
if(!$users){
echo "用户名错误";
}
}
public function lpassword(){
$where['password']=I('password');
$users=M('users')->where($where)->select();
if(!$users){
echo "密码错误";
}
}
} 
