刚接触学习新写一个获取微信OPENID以及用户信息的类，相对比较简单。
<?php
namespace Home\Controller;
use Think\Controller;
/**
*
* 获取用户openid类
* 该类实现了从微信公众平台获取code、通过code获取openid和access_token、
*
* @author Rookie
*
*/
class WxOpenIdController extends Controller
{
public static $access_token = array();
private static $appid = '';
private static $appecrt = '';
public static $access_error = '';
private static $file = 'account_token.json';
public static $userInfoError = '';
public static $openid = '';
public function _initialize () {
self::$appid = C('WX_APPID');
self::$appecrt = C('WX_APPSERCT');
}
/**
* [getOpenId 获取用户OPENID]
* @return [type] [description]
*/
public function getOpenId () {
if (!isset($_GET['code'])) {
//如果没有收到CODE返回值，就发送请求
$baseUrl = urlencode('http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING']);
$url = self::PingUrl($baseUrl);
header("location:$url");
exit;
}else{
$code = $_GET['code'];
$openid = self::caretFrom($code);
return $openid;
}
}
/**
* [getUserInfo 获取用户信息]
* @param string $openid [description]
* @return [array] [description]
*/
public function getUserInfo ($openid = '') {
if ($openid == '') {
$openid = $this->getOpenId();
}
$url['access_token'] = self::getToken();
$url['openid'] = $openid;
$url['lang'] = 'zh_CN';
$newurl = self::ToUrlParams($url);
$baseUrl = "https://api.weixin.qq.com/cgi-bin/user/info?".$newurl;
$data = self::https_post($baseUrl);
$data = json_decode($data,true);
if (!isset($data['errcode']) && $data['openid'] != '') {
return $data;
}else{
self::$userInfoError = 'ERRORCODE:'.$data['errcode'].',errmsg:'.$data['errmsg'];
return FALSE;
}
}
/**
* [getToken 获取access_token]
* @return [type] [description]
*/
public static function getToken () {
$token = json_decode(self::get_file(),true);
if ($token['expires_time'] < time()) {
$access_token = self::accessToken();
}else{
$access_token = $token;
}
return $access_token['access_token'];
}
/**
* [accessToken 生成accountToken]
* @return [array] [返回 $access_token['access_token'] $access_token['expires_time']]
*/
private static function accessToken () {
$url['grant_type'] = 'client_credential';
$url['appid'] = self::$appid;
$url['secret'] = self::$appecrt;
$newurl = self::ToUrlParams($url);
$baseUrl = 'https://api.weixin.qq.com/cgi-bin/token?'.$newurl;
$data = self::https_post($baseUrl);
$data = json_decode($data,true);
if ($data['access_token'] != '') {
$access_token['access_token'] = $data['access_token'];
$access_token['expires_time'] = time() + 7200;
self::$access_token = $access_token;
self::set_file(json_encode($access_token));
return $access_token;
}else{
self::$access_error = "ERRORCODE:".$data['errcode'].',errmsg:'.$data['errmsg'];
return FALSE;
}
}
/**
* [get_file 读取文件缓存]
* @param string $file [description]
* @return [type] [description]
*/
private static function get_file ($file = '') {
if ($file == '') {
$file = self::$file;
}
return trim(file_get_contents($file));
}
/**
* [set_file_put 写入文件缓存]
* @param [type] $data [description]
*/
private static function set_file($data){
$file= self::$file;
$fp = fopen($file,'w');
fwrite($fp,$data);
fclose($fp);
}
/**
* [PingUrl 重组URL]
* @param [string] $baseUrl [当前网址]
* return string 返回发送的跳转的网址
*/
private static function PingUrl ($baseUrl) {
$url['appid'] = self::$appid;
$url['redirect_uri'] = $baseUrl;
$url['response_type'] = 'code';
$url['scope'] = 'snsapi_base'; //snsapi_base 只获取用户openid snsapi_userinfo 弹出授权窗口 可获取用户地区 性别 昵称等信息
$url['state'] = "STATE"."#wechat_redirect";
$newsUrl = self::ToUrlParams($url);
return "https://open.weixin.qq.com/connect/oauth2/authorize?".$newsUrl;
}
/**
* [caretFrom 重组获取用户ID所需的参数]
* @param [string] $code [返回的code参数]
* @return [string] [用户openid]
*/
private static function caretFrom ($code) {
$data['appid'] = self::$appid;
$data['secret'] = self::$appecrt;
$data['code'] = $code;
$data['grant_type'] = 'authorization_code';
$newString = self::ToUrlParams($data);
return self::SendFrom($newString);
}
/**
* [SendFrom 获取opnid]
* @param [string] $str [description]
*/
private static function SendFrom ($str) {
$url = "https://api.weixin.qq.com/sns/oauth2/access_token?".$str;
$data = self::https_post($url);
$data = json_decode($data,true);
self::$openid = $data['openid'];
return $data['openid'];
}
/**
* [https_post POST OR GET发送]
* @param [string] $url [接口地址]
* @param [array] $data [接口数据]
* @return [json] []
*/
private static function https_post ($url,$data = null) {
$curl = curl_init();
curl_setopt($curl,CURLOPT_URL,$url);
curl_setopt($curl,CURLOPT_SSL_VERIFYPEER,FALSE);
curl_setopt($curl,CURLOPT_SSL_VERIFYHOST,FALSE);
//添加
curl_setopt($curl,CURLOPT_REFERER,"http://www.baidu.com"); //构造来路
//结束
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);
return $output;
}
/**
* [ToUrlParams 重组url参数]
* @param [array] $data [需要重组的数组]
*/
protected static function ToUrlParams ($data) {
$url = "";
foreach ($data as $key => $value) {
$url .= $key . "=" .$value ."&";
}
$url = trim($url,"&");
return $url;
}
}
