1、首先到微信开放平台申请https://open.weixin.qq.com/ 获取到appid和APPSECRET,前台显示页面如下:
<!DOCTYPE html> <html> <head> <meta http-equiv="content-type" content="text/html;charset=utf-8"> </head> <body> <span id="login_container"></span> <script src="http://res.wx.qq.com/connect/zh_CN/htmledition/js/wxLogin.js"></script> <script> var obj = new WxLogin({ id: "login_container", appid: "110", scope: "snsapi_login", redirect_uri: encodeURIComponent("http://" + window.location.host + "/login.php"), state: Math.ceil(Math.random()*1000), style: "black", href: ""}); </script> </body> </html>
2、登录页面代码如下:
<?php header("Content-type: text/html; charset=utf-8"); require_once('wxopen.class.php'); $weixin = new class_weixin(); if (!isset($_GET["code"])){ $redirect_url = 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']; $jumpurl = $weixin->qrconnect($redirect_url, "snsapi_login", "123"); Header("Location: $jumpurl"); }else{ $oauth2_info = $weixin->oauth2_access_token($_GET["code"]); $userinfo = $weixin->oauth2_get_user_info($oauth2_info['access_token'], $oauth2_info['openid']); var_dump($userinfo); }
3、登录页面中引用的wxopen.class.php代码如下:
<?php /* 开发者 https://dev.21ds.cn/ CopyRight 2017 All Rights Reserved 微信开放平台接口SDK */ /* require_once('weixin.class.php'); $weixin = new class_weixin(); */ define('APPID', "110"); //填写开放平台申请的APPID define('APPSECRET', "110"); //填写对应的APPSECRET class class_weixin { var $appid = APPID; var $appsecret = APPSECRET; //构造函数,获取Access Token public function __construct($appid = NULL, $appsecret = NULL) { if($appid && $appsecret){ $this->appid = $appid; $this->appsecret = $appsecret; } //扫码登录不需要该Access Token, 语义理解需要 //1. 本地写入 $res = file_get_contents('access_token.json'); $result = json_decode($res, true); $this->expires_time = $result["expires_time"]; $this->access_token = $result["access_token"]; if (time() > ($this->expires_time + 3600)){ $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$this->appid."&secret=".$this->appsecret; $res = $this->http_request($url); $result = json_decode($res, true); $this->access_token = $result["access_token"]; $this->expires_time = time(); file_put_contents('access_token.json', '{"access_token": "'.$this->access_token.'", "expires_time": '.$this->expires_time.'}'); } } //生成扫码登录的URL public function qrconnect($redirect_url, $scope, $state = NULL) { $url = "https://open.weixin.qq.com/connect/qrconnect?appid=".$this->appid."&redirect_uri=".urlencode($redirect_url)."&response_type=code&scope=".$scope."&state=".$state."#wechat_redirect"; return $url; } //生成OAuth2的Access Token public function oauth2_access_token($code) { $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$this->appid."&secret=".$this->appsecret."&code=".$code."&grant_type=authorization_code"; $res = $this->http_request($url); return json_decode($res, true); } //获取用户基本信息(OAuth2 授权的 Access Token 获取 未关注用户,Access Token为临时获取) public function oauth2_get_user_info($access_token, $openid) { $url = "https://api.weixin.qq.com/sns/userinfo?access_token=".$access_token."&openid=".$openid."&lang=zh_CN"; $res = $this->http_request($url); return json_decode($res, true); } public function semantic_search($record) { $data = urldecode(json_encode($record)); $url = "https://api.weixin.qq.com/semantic/semproxy/search?access_token=".$this->access_token; $res = $this->http_request($url, $data); return json_decode($res, true); } //HTTP请求(支持HTTP/HTTPS,支持GET/POST) protected function http_request($url, $data = null) { $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE); if (!empty($data)){ curl_setopt($curl, CURLOPT_POST, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, $data); } curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE); $output = curl_exec($curl); curl_close($curl); return $output; } //日志记录 private function logger($log_content) { if(isset($_SERVER['HTTP_APPNAME'])){ //SAE sae_set_display_errors(false); sae_debug($log_content); sae_set_display_errors(true); }else if($_SERVER['REMOTE_ADDR'] != "127.0.0.1"){ //LOCAL $max_size = 500000; $log_filename = "log.xml"; if(file_exists($log_filename) and (abs(filesize($log_filename)) > $max_size)){unlink($log_filename);} file_put_contents($log_filename, date('Y-m-d H:i:s').$log_content."\r\n", FILE_APPEND); } } }
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