資料準備：

水印圖片 28*28  png格式 公司logo
高清圖片 108*108   png格式 公司logo

1.在微信開放平臺 https://open.weixin.qq.com/中填寫基本信息，
2.完成郵箱驗證，
3.并完善開發者資料，注冊成為開發者。
4.在“賬號中心”完成開發者資質認證。
5.進入微信開放平臺管理中心網站應用，點擊“創建應用”按鈕。
6.填寫基本信息，完成點擊下一步
7.填寫平臺信息
 應用簽名：可在微信開發平臺的資源中心》》資源下載》》中下載“簽名生成工具”，用戶獲取已經安裝到手機的第三方應用的簽名。輸入應用包名，即可獲得該應用的簽名值。
8.提交審核后，在7個工作日內騰訊將給出審核結果。（通常較快，幾個小時就可反饋結果）

需要在你想加的網站登錄頁給一個鏈接：<a href="https://open.weixin.qq.com/connect/qrconnect?appid=your appid &redirect_uri=http://www.sunmil.cn/passport-linshi.html&response_type=code&scope=snsapi_login&state=STATE#wechat_redirect" rel="external nofollow" >微信登錄</a>
<br><br>

private $appid = "your appid";
private $appsecert = "your appsecert";
private $redirect_uri = http://www.sunmil.cn/wxGetCode;

public function weixin(){
   //鏈接數據庫
   $link = mysqli_connect(DB_HOST, DB_USER,DB_PASSWORD,DB_NAME ) or die('數據庫連接失敗4');
   $link = mysqli_connect('127.0.0.1', 'root','root', 'ec') or die('數據庫連接失敗');
   mysqli_set_charset($link,'utf8');
 
   //接收openid
   $openid = $_COOKIE['openid'];
 
   $sql = "select * from sdb_trustlogin_trustinfo where openid = '$openid' ";
   $res = mysqli_query($link, $sql);
   $row = mysqli_fetch_assoc($res);
 
   $this->pagedata['realname'] = $row['realname'];
   $this->pagedata['avatar'] = $row['avatar'];
 
   $this->page("site/passport/weixin.html");
 
 }

public function handle($url=null){
    // $url = "http://www.sunmil.cn";
     //鏈接數據庫
    $link = mysqli_connect(DB_HOST, DB_USER,DB_PASSWORD,DB_NAME ) or die('數據庫連接失敗3');
      mysqli_set_charset($link,'utf8');

      $post = utils::_filter_input($_POST);

    $userData = array(
      'login_account' => $post['uname'],
      'login_password' => $post['password']
    );

    $member_id = kernel::single('pam_passport_site_basic')->login($userData,$post['verifycode'],$msg);


    $b2c_members_model = $this->app->model('members');
    $member_point_model = $this->app->model('member_point');

    $member_data = $b2c_members_model->getList( 'member_lv_id,experience,point', array('member_id'=>$member_id) );
    
    $member_data = $member_data[0];
    $member_data['order_num'] = $this->app->model('orders')->count( array('member_id'=>$member_id) ); 

    $b2c_members_model->update($member_data,array('member_id'=>$member_id));
    $this->userObject->set_member_session($member_id);
    $this->bind_member($member_id);
    $this->set_cookie('loginName',$post['uname'],time()+31536000);//用于記住密碼
    // setCartNum()需要傳入一個參數
    $aCart = array();
    $this->app->model('cart_objects')->setCartNum($aCart);
    $url = $this->userPassport->get_next_page('pc');
    if( !$url ){
      $url = kernel::single('b2c_frontpage')->gen_url(array('app'=>'b2c','ctl'=>'site_member','act'=>'index'));
    }

    //查詢數據庫
    $uname = $_POST['uname'];
    $sql = "select * from sdb_pam_members where password_account = '$uname' ";
    $res = mysqli_query($link, $sql);
    $row = mysqli_fetch_assoc($res);
    $member_id = $row['member_id'];
    //鏈接數據庫，插入數據
    $openid = $_COOKIE['openid'];
    $sql = "update sdb_trustlogin_trustinfo set member_id = ('{$member_id}') where openid = '{$openid}'";
    $res = mysqli_query($link, $sql); 

    if($res && mysqli_affected_rows($link) > 0){ 
      //刪除cookie
      setcookie("openid", $openid, time()-3600);
      kernel::single('pam_lock')->flush_lock($member_id);
      $this->splash('success',$url,app::get('b2c')->_('登錄成功'),true); 
    }else{
      echo '失敗了';
    }
  }