PHP TP模板下的微信登录（PC）

1.微信开发者账号的申请就不说，企业级；官网域名回跳地址。（微信开放平台APPID）

      还有注意点：很多应用是放在微信公众号中的，此地微信登录是：微信公众平台APPID

2.请求代码构

<?php

class ui_login_weixin_login extends ui
{

public function __construct()
{
parent::__construct();
//当前由用户
if (empty($this->uid)) {
$biz_weixin_loginapi = new biz_weixin_loginapi();
$weixin_login_url = $biz_weixin_loginapi->get_url_code();
//请求到地址栏
header('location:' . $weixin_login_url);
} else {
header('location:' . WWW_DOMAIN);
}
}
}

public function get_url_code(){
$url = self::WEIXIN_URL;
//回调地址
$code_redirect_uri = urlencode(self::CODE_REDIRECT_URI); // self::CODE_REDIRECT_URI 回调地址需要urlencode ;

$state = md5(uniqid(mt_rand(), true));
$_SESSION['weixin_login_state'] = $state;
//请求地址
$url .= 'connect/qrconnect?appid='.self::APPID.'&redirect_uri='.$code_redirect_uri.'&response_type=code&scope=snsapi_login&state='.$state.'#wechat_redirect';
return $url;
}

这两部代码即可完成对微信的请求



2.编写回调代码：

步骤：

2.1  判断是不是有返回值；

2.2  获取access_token open_id；

2.3  获取微信用户信息；

2.4  检验微信token是否有效；

2.5  根据unionid查询查询本地 是否有数据 有得话，执行本地登录方法，成功或者失败 ；

2.6  没有得话 写入weixin_login user 表各一份数据 微信登陆表 用户表，执行本地登录方法，成功或者失败；

<?php

class ui_login_weixin_logincallback extends ui
{

public function __construct($S, $param)
{
parent::__construct();

// 如果已登陆 跳转到首页
if (! empty($this->uid)) {
header('location:' . WWW_DOMAIN);
return null;
}
$header = loadMod('glob/header');
$footer = loadMod('glob/footer');
$S->assign('header', $header);
$S->assign('footer', $footer);

$info = $this->login_callback($param['code'], $param['state']);
$S->assign('info', $info);
}

/**
* 微信登陆扫码后 访问得方法
*/
protected function login_callback($code, $state)
{

// 如果返回值无code 或者state不对　跳转到首页
if (empty($code) || $state !== $_SESSION['weixin_login_state']) {
return array(
'title' => '登陆失败，请重新尝试！',
'url' => '/',
'sec' => 5,
'msg' => 'alert'
);
}

// 获取access_token open_id
$biz_weixin_loginapi = new biz_weixin_loginapi();
$result_access_token = $biz_weixin_loginapi->get_access_token($code);
if ($result_access_token['msg'] !== 'success') {
return array(
'title' => '登陆失败，请重新尝试！',
'url' => '/',
'sec' => 5,
'msg' => 'alert'
);
}

$access_token = $result_access_token['data']['access_token'];
$open_id = $result_access_token['data']['openid'];
// 获取用户信息
$result_user_info = $biz_weixin_loginapi->get_user_info($access_token, $open_id);
if ($result_user_info['msg'] !== 'success' || empty($result_user_info['data']['unionid'])) {
return array(
'title' => '登陆失败，请重新尝试！',
'url' => '/',
'sec' => 5,
'msg' => 'alert'
);
}

// 检验token是否有效
$check_token_res = $biz_weixin_loginapi->check_token($access_token, $open_id);

if ($check_token_res['msg'] !== 'success') {
return array(
'title' => '登陆失败，请重新尝试！',
'url' => '/',
'sec' => 5,
'msg' => 'alert'
);
}

// 登陆成功 根据unionid查询weixin_login user 是否有数据 有得话 直接读取 没有得话

$biz_login_weixin = new biz_login_weixin();
$user_id = $biz_login_weixin->get_userid_by_weixin_unionid($result_user_info['data']['unionid']);

if (is_id($user_id['data'])) {
$biz_login = new biz_login();
$biz_login->login($user_id['data'], 'is_login');
return array(
'title' => '登陆成功！',
'url' => '/home/welcome',
'sec' => 3,
'msg' => 'success'
);
}

// 没有得话 写入weixin_login user 表各一份数据 微信登陆表 用户表

$openid = $result_user_info['data']['openid'];
$nickname = $result_user_info['data']['nickname'];
$sex = $result_user_info['data']['sex'];
$language = $result_user_info['data']['language'];
$city = $result_user_info['data']['city'];
$province = $result_user_info['data']['province'];
$country = $result_user_info['data']['country'];
$headimgurl = $result_user_info['data']['headimgurl'];
$unionid = $result_user_info['data']['unionid'];

$insert_res = $biz_login_weixin->add_weixin($openid, $nickname, $sex, $language, $city, $province, $country, $headimgurl, $unionid);

if ($insert_res['msg'] !== 'success' || ! is_id($insert_res['data']['user_id'])) {
return array(
'title' => '登陆失败，请重新尝试！',
'url' => '/',
'sec' => 5,
'msg' => 'alert'
);
}
$biz_login = new biz_login();
$biz_login->login($insert_res['data']['user_id'], 'is_login');
return array(
'title' => '登陆成功！',
'url' => '/home/welcome',
'sec' => 3,
'msg' => 'success'
);
}
}

public function get_access_token($code, $type = 1){

if(empty($code))
{
return array('msg' => 'code_error');
}
$url = self::API_URL;
if($type === 1)
{
$appid = self::APPID;
$secret = self::APP_SECRET;
}else{
$appid = self::APPID_GZ;
$secret = self::APP_SECRET_GZ;
}
$url .= 'sns/oauth2/access_token?appid='.$appid.'&secret='.$secret.'&code='.$code.'&grant_type=authorization_code';
//获取access_token
$res_json = runCurl($url);
if(!$res_json)
{
return array('msg' => 'runCurl_error');
}
$res_arr = json_decode($res_json, true);

if(isset($res_arr['errcode']))
{
return array('msg' => $res_arr['errmsg']);
}

return array('msg' => 'success', 'data' => $res_arr);
}

public function get_user_info($access_token, $open_id){
if(empty($access_token) || empty($open_id))
{
return array('msg' => 'empty_token_or_openid');
}

$url = self::API_URL;
$url .= 'sns/userinfo?access_token='.$access_token.'&openid='.$open_id;

$res_json = runCurl($url);
if(!$res_json)
{
return array('msg' => 'runCurl_error');
}

$res_arr = json_decode($res_json, true);

if(isset($res_arr['errcode']))
{
return array('msg' => $res_arr['errmsg']);
}
return array('msg' => 'success', 'data' => $res_arr);

}

public function check_token($access_token, $open_id){
if(empty($access_token) || empty($open_id))
{
return array('msg' => 'empty_token_or_openid');
}

$url = self::API_URL;
$url .= 'sns/auth?access_token='.$access_token.'&openid='.$open_id;
$res_json = runCurl($url);
if(!$res_json)
{
return array('msg' => 'runCurl_error');
}

$res_arr = json_decode($res_json, true);

if( $res_arr['errcode'] !== 0 )
{
return array('msg' => $res_arr['errmsg']);
}

return array('msg' => 'success');
}