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('No direct script access allowed'); Class Weixin { private $appId; private $appSecret; function __construct() { $this->appId = trim('你的appid'); $this->appSecret = trim('你的appsecret'); } function redirect_url($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 $url; } /* 通过code换取access_token*/ function access_token($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 $userinfo; } function eff($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 $get_eff; } //通过curl方式提交code换取access_token数据 function postdata($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 $access; } /* 这个位置开始是控制器index()传入的微信用户资料处理 */ function save_session($data) { foreach ($data as $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($_SESSION[0]); } function obj_to_arr($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 ($data as $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('No direct script access allowed'); Class Coupon_index extends CI_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 */ function index() { $this->load->view('/coupon/index.html'); } function User_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 $user std_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); } function Coupon_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:'.$return); } public function Get_code() { if(isset($_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'; } } public function Coupon_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; } }

希望本文所述对大家基于CodeIgniter框架的PHP程序设计有所帮助。