完美利用Yii2微信后台开发的系列总结

网上有很多关于yii2.0微信开发教程，但是太过复杂凌乱，所以今天在这里给大家整理总结利用yii2微信后台开发的系列了，给需要的小伙伴们参考。

一：接入微信

yii2后台配置

1.在app/config/params.php中配置token参数

return [
 //微信接入
 'wechat' =>[
 'token' => 'your token',
 ],
];

2.在app/config/main.php中配置路由

因为接口模块使用的restful api，所以需要定义路由规则。

'urlmanager' => [
 'enableprettyurl' => true,
 'enablestrictparsing' => true,
 'showscriptname' => false,
 'rules' => [
 [
  'class' => 'yii\rest\urlrule',
  'controller' => 'wechat',
  'extrapatterns' => [
  'get valid' => 'valid',
  ],
 ],
 ],
],

3.在app/controllers中新建wechatcontroller

<?php

namespace api\controllers;

use yii;
use yii\rest\activecontroller;

class wechatcontroller extends activecontroller
{

 public $modelclass = '';

 public function actionvalid()
 {
 $echostr = $_get["echostr"];
 $signature = $_get["signature"];
 $timestamp = $_get["timestamp"];
 $nonce = $_get["nonce"];
 //valid signature , option
 if($this->checksignature($signature,$timestamp,$nonce)){
  echo $echostr;
 }
 }

 private function checksignature($signature,$timestamp,$nonce)
 {
 // you must define token by yourself
 $token = yii::$app->params['wechat']['token'];
 if (!$token) {
  echo 'token is not defined!';
 } else {
  $tmparr = array($token, $timestamp, $nonce);
  // use sort_string rule
  sort($tmparr, sort_string);
  $tmpstr = implode( $tmparr );
  $tmpstr = sha1( $tmpstr );

  if( $tmpstr == $signature ){
  return true;
  }else{
  return false;
  }
 }
 }

}

微信公众号后台配置

在微信公众号后台配置url和token，然后提交验证即可。

url:http://app.demo.com/wechats/valid
token:your token

二：获取用户信息

用户表设计

create table `wechat_user` (
  `id` int(11) not null,
  `openid` varchar(255) collate utf8_unicode_ci not null,
  `nickname` varchar(50) collate utf8_unicode_ci not null comment '微信昵称',
  `sex` tinyint(4) not null comment '性别',
  `headimgurl` varchar(255) collate utf8_unicode_ci not null comment '头像',
  `country` varchar(50) collate utf8_unicode_ci not null comment '国家',
  `province` varchar(50) collate utf8_unicode_ci not null comment '省份',
  `city` varchar(50) collate utf8_unicode_ci not null comment '城市',
  `access_token` varchar(255) collate utf8_unicode_ci not null,
  `refresh_token` varchar(255) collate utf8_unicode_ci not null,
  `created_at` timestamp null default current_timestamp
) engine=innodb auto_increment=4 default charset=utf8 collate=utf8_unicode_ci;
alter table `wechat_user`
  add primary key (`id`);

获取用户信息的相关接口

1.用户授权接口：获取access_token、openid等；获取并保存用户资料到数据库

public function actionaccesstoken()
{
    $code = $_get["code"];
    $state = $_get["state"];
    $appid = yii::$app->params['wechat']['appid'];
    $appsecret = yii::$app->params['wechat']['appsecret'];
    $request_url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid='.$appid.'&secret='.$appsecret.'&code='.$code.'&grant_type=authorization_code';
    //初始化一个curl会话
    $ch = curl_init();
    curl_setopt($ch, curlopt_url, $request_url);
    curl_setopt($ch, curlopt_returntransfer, true);
    $result = curl_exec($ch);
    curl_close($ch);
    $result = $this->response($result);
    //获取token和openid成功，数据解析
    $access_token = $result['access_token'];
    $refresh_token = $result['refresh_token'];
    $openid = $result['openid'];
    //请求微信接口，获取用户信息
    $userinfo = $this->getuserinfo($access_token,$openid);
    $user_check = wechatuser::find()->where(['openid'=>$openid])->one();
    if ($user_check) {
        //更新用户资料
    } else {
        //保存用户资料
    }
    //前端网页的重定向
    if ($openid) {
        return $this->redirect($state.$openid);
    } else {
        return $this->redirect($state);
    }
}

2.从微信获取用户资料

public function getuserinfo($access_token,$openid)
{
    $request_url = 'https://api.weixin.qq.com/sns/userinfo?access_token='.$access_token.'&openid='.$openid.'&lang=zh_cn';
    //初始化一个curl会话
    $ch = curl_init();
    curl_setopt($ch, curlopt_url, $request_url);
    curl_setopt($ch, curlopt_returntransfer, true);
    $result = curl_exec($ch);
    curl_close($ch);
    $result = $this->response($result);
    return $result;
}

3.获取用户资料接口

public function actionuserinfo()
{
 if(isset($_request["openid"])){
  $openid = $_request["openid"];
  $user = wechatuser::find()->where(['openid'=>$openid])->one();
  if ($user) {
   $result['error'] = 0;
   $result['msg'] = '获取成功';
   $result['user'] = $user;
  } else {
   $result['error'] = 1;
   $result['msg'] = '没有该用户';
  }
 } else {
  $result['error'] = 1;
  $result['msg'] = 'openid为空';
 }
 return $result;
}

 

三：微信支付

1.微信支付接口：打包支付数据

public function actionpay(){
    if(isset($_request["uid"])&&isset($_request["oid"])&&isset($_request["totalfee"])){
        //uid、oid、totalfee
        $uid = $_request["uid"];
        $oid = $_request["oid"];
        $totalfee = $_request["totalfee"];
        $timestamp = time();
        //微信支付参数
        $appid = yii::$app->params['wechat']['appid'];
        $mchid = yii::$app->params['wechat']['mchid'];
        $key = yii::$app->params['wechat']['key'];
        $notifyurl = yii::$app->params['wechat']['notifyurl'];
        //支付打包
        $wx_pay = new wechatpay($mchid, $appid, $key);
        $package = $wx_pay->createjsbizpackage($uid, $totalfee, $oid, $notifyurl, $timestamp);
        $result['error'] = 0;
        $result['msg'] = '支付打包成功';
        $result['package'] = $package;
        return $result;
    }else{
        $result['error'] = 1;
        $result['msg'] = '请求参数错误';
    }
    return $result;
}

2.接收微信发送的异步支付结果通知

public function actionnotify(){
    $poststr = $globals["http_raw_post_data"];
    $postobj = simplexml_load_string($poststr, 'simplexmlelement', libxml_nocdata);
    //
    if ($postobj === false) {
        die('parse xml error');
    }
    if ($postobj->return_code != 'success') {
        die($postobj->return_msg);
    }
    if ($postobj->result_code != 'success') {
        die($postobj->err_code);
    }
    //微信支付参数
    $appid = yii::$app->params['wechat']['appid'];
    $mchid = yii::$app->params['wechat']['mchid'];
    $key = yii::$app->params['wechat']['key'];
    $wx_pay = new wechatpay($mchid, $appid, $key);
    //验证签名
    $arr = (array)$postobj;
    unset($arr['sign']);
    if ($wx_pay->getsign($arr, $key) != $postobj->sign) {
        die("签名错误");
    }
    //支付处理正确-判断是否已处理过支付状态
    $orders = order::find()->where(['uid'=>$postobj->openid, 'oid'=>$postobj->out_trade_no, 'status' => 0])->all();
    if(count($orders) > 0){
        //更新订单状态
        foreach ($orders as $order) {
            //更新订单
            $order['status'] = 1;
            $order->update();
        }
        return '<xml><return_code><![cdata[success]]></return_code><return_msg><![cdata[ok]]></return_msg></xml>';
    } else {
        //订单状态已更新，直接返回
        return '<xml><return_code><![cdata[success]]></return_code><return_msg><![cdata[ok]]></return_msg></xml>';
    }
}

3.微信支付类 wechatpay.php

<?php
namespace api\sdk;
use yii;
class wechatpay
{
    protected $mchid;
    protected $appid;
    protected $key;
    public function __construct($mchid, $appid, $key){
        $this->mchid = $mchid;
        $this->appid = $appid;
        $this->key = $key;
    }
    public function createjsbizpackage($openid, $totalfee, $outtradeno, $ordername, $notifyurl, $timestamp){
        $config = array(
            'mch_id' => $this->mchid,
            'appid' => $this->appid,
            'key' => $this->key,
        );
        $unified = array(
            'appid' => $config['appid'],
            'attach' => '支付',
            'body' => $ordername,
            'mch_id' => $config['mch_id'],
            'nonce_str' => self::createnoncestr(),
            'notify_url' => $notifyurl,
            'openid' => $openid,
            'out_trade_no' => $outtradeno,
            'spbill_create_ip' => '127.0.0.1',
            'total_fee' => intval($totalfee * 100),
            'trade_type' => 'jsapi',
        );
        $unified['sign'] = self::getsign($unified, $config['key']);
        $responsexml = self::curlpost('https://api.mch.weixin.qq.com/pay/unifiedorder', self::arraytoxml($unified));
        $unifiedorder = simplexml_load_string($responsexml, 'simplexmlelement', libxml_nocdata);
        if ($unifiedorder === false) {
            die('parse xml error');
        }
        if ($unifiedorder->return_code != 'success') {
            die($unifiedorder->return_msg);
        }
        if ($unifiedorder->result_code != 'success') {
            die($unifiedorder->err_code);
        }
        $arr = array(
            "appid" => $config['appid'],
            "timestamp" => $timestamp,
            "noncestr" => self::createnoncestr(),
            "package" => "prepay_id=" . $unifiedorder->prepay_id,
            "signtype" => 'md5',
        );
        $arr['paysign'] = self::getsign($arr, $config['key']);
        return $arr;
    }
    public static function curlget($url = '', $options = array()){
        $ch = curl_init($url);
        curl_setopt($ch, curlopt_returntransfer, 1);
        curl_setopt($ch, curlopt_timeout, 30);
        if (!empty($options)) {
            curl_setopt_array($ch, $options);
        }
        //https请求 不验证证书和host
        curl_setopt($ch, curlopt_ssl_verifypeer, false);
        curl_setopt($ch, curlopt_ssl_verifyhost, false);
        $data = curl_exec($ch);
        curl_close($ch);
        return $data;
    }
    public static function curlpost($url = '', $postdata = '', $options = array()){
        if (is_array($postdata)) {
            $postdata = http_build_query($postdata);
        }
        $ch = curl_init();
        curl_setopt($ch, curlopt_url, $url);
        curl_setopt($ch, curlopt_returntransfer, 1);
        curl_setopt($ch, curlopt_post, 1);
        curl_setopt($ch, curlopt_postfields, $postdata);
        curl_setopt($ch, curlopt_timeout, 30); //设置curl允许执行的最长秒数
        if (!empty($options)) {
            curl_setopt_array($ch, $options);
        }
        //https请求 不验证证书和host
        curl_setopt($ch, curlopt_ssl_verifypeer, false);
        curl_setopt($ch, curlopt_ssl_verifyhost, false);
        $data = curl_exec($ch);
        curl_close($ch);
        return $data;
    }
    public static function createnoncestr($length = 16){
        $chars = 'abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789';
        $str = '';
        for ($i = 0; $i<$length; $i++){
            $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
        }
        return $str;
    }
    public static function arraytoxml($arr){
        $xml = "<xml>";
        foreach ($arr as $key => $val){
            if (is_numeric($val)) {
                $xml .= "<" . $key . ">" . $val . "</" . $key . ">";
            } else {
                $xml .= "<" . $key . "><![cdata[" . $val . "]]></" . $key . ">";
            }
        }
        $xml .= "</xml>";
        return $xml;
    }
    public static function getsign($params, $key){
        ksort($params, sort_string);
        $unsignparastring = self::formatqueryparamap($params, false);
        $signstr = strtoupper(md5($unsignparastring . "&key=" . $key));
        return $signstr;
    }
    protected static function formatqueryparamap($paramap, $urlencode = false){
        $buff = "";
        ksort($paramap);
        foreach ($paramap as $k => $v){
            if (null != $v && "null" != $v) {
                if ($urlencode) {
                    $v = urlencode($v);
                }
                $buff .= $k . "=" . $v . "&";
            }
        }
        $reqpar = '';
        if (strlen($buff)>0) {
            $reqpar = substr($buff, 0, strlen($buff) - 1);
        }
        return $reqpar;
    }
}

四：获取js-sdk的config参数

根据微信公众平台开发者文档：

所有需要使用js-sdk的页面必须先注入配置信息，否则将无法调用（同一个url仅需调用一次，对于变化url的spa的web app可在每次url变化时进行调用,目前android微信客户端不支持pushstate的h5新特性，所以使用pushstate来实现web app的页面会导致签名失败，此问题会在android6.2中修复）。

即：

wx.config({
    debug: true, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
    appid: '', // 必填，公众号的唯一标识
    timestamp: , // 必填，生成签名的时间戳
    noncestr: '', // 必填，生成签名的随机串
    signature: '',// 必填，签名，见附录1
    jsapilist: [] // 必填，需要使用的js接口列表，所有js接口列表见附录2
});

1.微信支付类 wechatpay.php

<?php
namespace api\sdk;
use yii;
class wechatpay
{
    public function getsignpackage($url) {
        $jsapiticket = self::getjsapiticket();
        $timestamp = time();
        $noncestr = self::createnoncestr();
        // 这里参数的顺序要按照 key 值 ascii 码升序排序
        $string = "jsapi_ticket=".$jsapiticket."&noncestr=".$noncestr."&timestamp=".$timestamp."&url=".$url;
        $signature = sha1($string);
        $signpackage = array(
            "appid"     => $this->appid,
            "noncestr"  => $noncestr,
            "timestamp" => $timestamp,
            "url"       => $url,
            "signature" => $signature,
            "rawstring" => $string
        );
        return $signpackage;
    }
    public static function getjsapiticket() {
        //使用redis缓存 jsapi_ticket
        $redis = yii::$app->redis;
        $redis_ticket = $redis->get('wechat:jsapi_ticket');
        if ($redis_ticket) {
            $ticket = $redis_ticket;
        } else {
            $accesstoken = self::getaccesstoken();
            $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=".$accesstoken;
            $res = json_decode(self::curlget($url));
            $ticket = $res->ticket;
            if ($ticket) {
                $redis->set('wechat:jsapi_ticket', $ticket);
                $redis->expire('wechat:jsapi_ticket', 7000);
            }
        }
        return $ticket;
    }
    public static function getaccesstoken() {
        //使用redis缓存 access_token
        $redis = yii::$app->redis;
        $redis_token = $redis->get('wechat:access_token');
        if ($redis_token) {
            $access_token = $redis_token;
        } else {
            $appid = yii::$app->params['wechat']['appid'];
            $appsecret = yii::$app->params['wechat']['appsecret'];
            $url = ";
            $res = json_decode(self::curlget($url));
            $access_token = $res->access_token;
            if ($access_token) {
                $redis->set('wechat:access_token', $access_token);
                $redis->expire('wechat:access_token', 7000);
            }
        }
        return $access_token;
    }
    public static function curlget($url = '', $options = array()){
        $ch = curl_init($url);
        curl_setopt($ch, curlopt_returntransfer, 1);
        curl_setopt($ch, curlopt_timeout, 30);
        if (!empty($options)) {
            curl_setopt_array($ch, $options);
        }
        //https请求 不验证证书和host
        curl_setopt($ch, curlopt_ssl_verifypeer, false);
        curl_setopt($ch, curlopt_ssl_verifyhost, false);
        $data = curl_exec($ch);
        curl_close($ch);
        return $data;
    }
    public static function curlpost($url = '', $postdata = '', $options = array()){
        if (is_array($postdata)) {
            $postdata = http_build_query($postdata);
        }
        $ch = curl_init();
        curl_setopt($ch, curlopt_url, $url);
        curl_setopt($ch, curlopt_returntransfer, 1);
        curl_setopt($ch, curlopt_post, 1);
        curl_setopt($ch, curlopt_postfields, $postdata);
        curl_setopt($ch, curlopt_timeout, 30); //设置curl允许执行的最长秒数
        if (!empty($options)) {
            curl_setopt_array($ch, $options);
        }
        //https请求 不验证证书和host
        curl_setopt($ch, curlopt_ssl_verifypeer, false);
        curl_setopt($ch, curlopt_ssl_verifyhost, false);
        $data = curl_exec($ch);
        curl_close($ch);
        return $data;
    }
    public static function createnoncestr($length = 16){
        $chars = 'abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789';
        $str = '';
        for ($i = 0; $i<$length; $i++){
            $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
        }
        return $str;
    }
}

2.获取config参数接口

public function actionconfig(){
 if (isset($_request['url'])) {
 $url = $_request['url'];
 //微信支付参数
 $appid = yii::$app->params['wechat']['appid'];
 $mchid = yii::$app->params['wechat']['mchid'];
 $key = yii::$app->params['wechat']['key'];
 $wx_pay = new wechatpay($mchid, $appid, $key);
 $package = $wx_pay->getsignpackage($url);
 $result['error'] = 0;
 $result['msg'] = '获取成功';
 $result['config'] = $package;
 } else {
 $result['error'] = 1;
 $result['msg'] = '参数错误';
 }
 return $result;
}

以上就是利用yii2微信后台开发全部过程及示例代码，希望本文对大家基于php的微信公众平台开发有所帮助。