基于CI框架的微信网页授权库示例
本文实例讲述了基于CI框架的微信网页授权库。分享给大家供大家参考，具体如下：
这里演示建立在CI框架上的微信网页授权功能。
1.微信小类库，网页授权放置在libraries文件夹
<?php
if(!defined('BASEPATH'))exit('Nodirectscriptaccessallowed');
ClassWeixin
{
private$appId;
private$appSecret;
function__construct()
{
$this->appId=trim('你的appid');
$this->appSecret=trim('你的appsecret');
}
functionredirect_url($redirect)
{
/*授权页面*/
$url="https://open.weixin.qq.com/connect/oauth2/authorize?appid=$this->appId&redirect_uri=$redirect&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect";
return$url;
}
/*通过code换取access_token*/
functionaccess_token($code)
{
/*获取到的code换取access_token和openid*/
$post_url="https://api.weixin.qq.com/sns/oauth2/access_token?appid=$this->appId&secret=$this->appSecret&code=$code&grant_type=authorization_code";
//echo$post_url;exit();
$return=$this->postdata($post_url);
//print_r($return);exit();
$access_token=$return['access_token'];
$openid=$return['openid'];
/*获取微信用户数据*/
$get_userinfo="https://api.weixin.qq.com/sns/userinfo?access_token=$access_token&openid=$openid&lang=zh_CN";
$userinfo=json_decode(file_get_contents($get_userinfo));
return$userinfo;
}
functioneff($access_token,$openid)
{
/*检测access_token是否正确，errcode＝0为正确*/
$eff_url="https://api.weixin.qq.com/sns/auth?access_token=$access_token&openid=$openid";
$get_eff=json_decode(file_get_contents($eff_url));
return$get_eff;
}
//通过curl方式提交code换取access_token数据
functionpostdata($url)
{
header('Content-Type:text/html;charset=utf-8');
//echo$url;exit();
$curl=curl_init();
curl_setopt($curl,CURLOPT_URL,$url);
curl_setopt($curl,CURLOPT_SSL_VERIFYPEER,FALSE);
curl_setopt($curl,CURLOPT_SSL_VERIFYHOST,FALSE);
curl_setopt($curl,CURLOPT_SSLVERSION,1);
//if(!empty($data)){
//curl_setopt($curl,CURLOPT_POST,1);
//curl_setopt($curl,CURLOPT_POSTFIELDS,$data);
//}
curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);
$output=curl_exec($curl);
curl_close($curl);
//var_dump($output);exit();
//print_r($output);exit();
$access=json_decode($output,true);
return$access;
}
/*
这个位置开始是控制器index()传入的微信用户资料处理
*/
functionsave_session($data)
{
foreach($dataas$key=>$value){
//$_SESSION['uid']=$value['uid'];
//$_SESSION['nickname']=$value['nickname'];
//$_SESSION['fullname']=$value['fullname'];
//$_SESSION['status']=$value['status'];
//$_SESSION['groups']=$value['groups'];
$_SESSION[$key]=$value;
}
return$_SESSION;
//print_r($_SESSION);exit();
//unset($_SESSION[0]);
}
functionobj_to_arr($data)
{
//进行转换成数组使用obj_to_arr方式
$data=is_object($data)?get_object_vars($data):$data;
foreach($dataas$key=>$value)
{
$arr[$key]=$value;
}
return$arr;
}
}
2.通过code换access_token获取用户信息,controller文件
<?php
if(!defined('BASEPATH'))exit('Nodirectscriptaccessallowed');
ClassCoupon_indexextendsCI_Controller
{
function__construct()
{
parent::__construct();
$this->load->library(array('weixin','session'));
$this->load->helper('url');
//$this->load->ldap_mod_del(link_identifier,dn,entry)
$this->load->model('Coupon_model');
}
/**
*优惠券主程序
*/
functionindex()
{
$this->load->view('/coupon/index.html');
}
functionUser_exists()
{
/*
检测改微信用户是否存在
$user_arr获取的是通过get_code返回的微信用户信息，此时的信息是通过微信服务器返回的，不能记录session
$userstd_obj模式，转换为数组
$user_exists扔入model中，检测数据表中是否存在该用户
$redirect走完流程后，跳转到首页
if语句的作用，是判断通过model返回数据表的信息，如果为空则把微信用户信息录入到表中，再读取出来，存进session。
else则数据表已经存在该用户，直接读取，存进session
需要注意的是，使用foreach的原因，是二维数组转一维数组
*/
$user_arr=$this->Get_code();
//var_dump($user_arr);exit();
$user=$this->weixin->obj_to_arr($user_arr);
//var_dump($user);exit();
//print_r($user);exit();
$user_exists=$this->Coupon_model->CheckUser('cou_user',$user);
//print_r($user_exists);exit();
//$redirect='http://yourwebname.com/coupon/index.php/Coupon/Coupon_index/Coupon_Get/bid/1';
//$return_url=$this->session->return_url;
$redirect='http://yourwebname.com'.$this->session->return_url;
//echo$redirect;exit();
if(empty($user_exists))
{
/*
由于微信获取到的用户数据是stdclass对象格式
所以需要进行转换成数组使用obj_to_arr方式
*/
//加入自定义的字符进入数组
unset($user['privilege']);
$user_exists['nickname']=$user['nickname'];
$user_exists['openid']=$user['openid'];
$user_exists['language']=$user['language'];
$user_exists['city']=$user['city'];
$user_exists['country']=$user['country'];
$user_exists['province']=$user['province'];
$user_exists['headimgurl']=$user['headimgurl'];
$user_exists['sex']=$user['sex'];
$user_exists['fullname']=$user['nickname'];
$user_exists['telphone']='';
$user_exists['login_ip']=$this->input->ip_address();
$user_exists['last_ip']=$this->input->ip_address();
$user_exists['groups']=REGISTER_GROUP_ID;
$user_exists['status']=1;
$user_exists['login_time']=date("Y-m-d");
$insert_id=$this->Coupon_model->insert_one('cou_user',$user_exists);
$user_exists['uid']=$insert_id;
}
else{
$user_exists=$user_exists[0];
}
//$return_url=$this->session->back_url;
//if(isset($return_url))header('location:'.$return_url);
/*由Coupon_idex中的Get_Coupon处理*/
$this->session->set_userdata($user_exists);
if(isset($this->session->return_url))header('location:'.$this->session->return_url);
//print_r($user_exists);exit();
header('location:'.$redirect);
}
functionCoupon_start()
{
/*进入领取页面，需要先经过授权*/
$redirect_url='Coupon/Coupon_index/User_exists';
$redirect=urlencode('http://yourwebname.com/coupon/index.php/'.$redirect_url);
//$redirect=urlencode('http://yourwebname.com/coupon/index.php/Coupon/Coupon_index/Get_code');
$return=$this->weixin->redirect_url($redirect);
header('location:'.$return);
}
publicfunctionGet_code()
{
if(isset($_GET['code']))
{
$code=$_GET['code'];
//echo$code;exit();
$user_arr=$this->weixin->access_token($code);
//跳转到用户检测中check_exists()去
//echo$user_arr;exit();
//var_dump($user_arr);
return$user_arr;
}else{
//否则检测cookie中是否存在该用户，如果有，则return回首页
echo'error';
}
}
publicfunctionCoupon_Get()
{
/*获取商家bid，读取相关信息*/
//$b_name=$this->uri->segment(4,0);
$nickname=$this->session->nickname;
$openid=$this->session->openid;
$status=$this->session->status;
$_SESSION['return_url']=$_SERVER['REQUEST_URI'];
//$this->session->set_userdata($return_url);
//echo$this->session->return_url;exit();
if(empty($nickname))header('location:'.'http://yourwebname.com/coupon/index.php/Coupon/Coupon_index/Coupon_start');
$bid=$this->uri->segment(5,0);
/*扔进Coupon_model中，读取bid中的商家信息*/
$content=$this->Coupon_model->Coupon_Business('cou_business',$bid);
//print_r($content);
//echo$bid;
//echo$b_name;
$data['bname']=$content['bname'];
$data['discount']=$content['discount'];
$data['bimg']=$content['bimg'];
$data['contents']=$content['contents'];
$data['amount']=$content['amount'];
$data['nickname']=$nickname;
$data['status']=$status;
$data['js']=json_encode(array($content['bname'],$content['discount'],$nickname,$status));
//echo$data['js'];exit();
//print_r($data);
$this->load->view('/coupon/index.html',$data);
//echo$nickname;
//echo$status;
}
}
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