thinkphp登陆

html代码

<form action="__URL__/log"  method="post">

                    <table>
                        <tbody>
                        <tr>
                                <td></td>
                                <td style="height:50px;"><img src="__PUBLIC__/images/hydl.gif" /></td>
                            </tr>
                            <tr>
                                <td style="text-align:right;">用户名：</td>
                                <td><input type="text" name="user_name"/></td>
                            </tr>
                            <tr>
                                <td style="text-align:right;">密码：</td>
                                <td><input type="password" name="user_pass"/>&nbsp;&nbsp;<a href="">忘记密码?</a></td>
                            </tr>
                             <tr>
                            <td>验证码：</td>
                          <td style="width:300px;"><div><input id="Text4" name="logx" type="text" class="lgin" style="width:100px;"  />
                            <img  id="log" name="log"  title="点击刷新验证码" onclick="ref()" src="__URL__/regh"></div>
                            </td>
                        </tr>
                             <tr>
                                <td style="text-align:right;"></td>
                                <td><input id="Checkbox2" type="checkbox" style="width:20px;vertical-align:middle;"/>记住用户名和密码</td>
                            </tr>
                             <tr>
                                <td style="text-align:right;"></td>
                                <td><input type="submit" value="" style="background:url('__PUBLIC__/images/dlbtn.gif');width:76px;height:29px;border:0px;margin-left:35px;" /></td>
                            </tr>
                            <tr>
                                <td style="text-align:right;"></td>
                                <td>没有账号？<a href="__URL__/userReg">注册一个</a></td>
                            </tr>
                        </tbody>
                    </table>

                    </form>

 <!--实现验证码刷新-->

 <script>
 function ref(){
    document.getElementById('log').src="__URL__/regh/random/"+Math.random();
               }
   </script>

后台代码：

//表单提交到的地方

function log(){
        
        
        header('Content-type:text/html;charset=utf-8');
     //$this->uadd('Users');

     //echo $_POST['regx'];
       if (md5($_POST['logx']) != $_SESSION['verify']) {
         echo '<script>alert("验证码错误");window.location.href="'.__URL__.'/userLogin"</script>';
         
     
     }
     else {
         
     $users=D();
        //密码没有加密
        $se_user=$users->query("select users_id from users where users_name='".$_POST['user_name']."' and  users_pass='".md5($_POST['user_pass'])."'");
        if(count($se_user)) {
         
            header("location:".__URL__."/index");
            $_SESSION['user_name']=$_POST['user_name'];
            $_SESSION['user_id']=$se_user[0]['users_id'];
        }else{echo '<script>alert("姓名或密码错误！！！");window.location.href="'.__URL__.'/userLogin"</script>';
    
        
        
        }
     }  
    
        
    } 

//引用自己封装好的函数
  function regh(){
            //自己封装的方法
        $this->proving();
            
            
    }