一：流程：【
流程：微信用户访问红包活动页面--》后端判断是否是微信访问的
【否：提示用微信打开连接，是：提示用户是否授权允许，获取其的用户信息【openID等信息】】--》
进入红包活动页面---》用户点击领取红包【判断是否领取过红包】是：【提示已领取过红包】否
--》后端程序调用接口发放红包
--》微信用户在微信中收到红包
--》打开红包
--》红包金额会添加到钱包零钱里
--》完成红包发放。
】
二：要实现微信现金红包接口实现红包发放，首先要符合以下条件：
1.用于发放红包的微信公众号要是服务类型
2.登录微信公众平台官网后，在公众平台后台管理页面 - 开发者中心页，
点击“修改配置”按钮，填写服务器地址（URL）、Token和EncodingAESKey，
其中URL是开发者用来接收微信消息和事件的接口URL。Token可由开发者可以任意填写，
用作生成签名（该Token会和接口URL中包含的Token进行比对，从而验证安全性）。
EncodingAESKey由开发者手动填写或随机生成，将用作消息体加解密密钥。
3.获取access_token：公众号可以使用AppID和AppSecret调用本接口来获取access_token。
【AppID和AppSecret可在微信公众平台官网-开发者中心页中获得（需要已经成为开发者，且帐号没有异常状态）。】
4.微信公众号要开通 “网页授权接口” 用户获取用户基本信息【特别是openID ，发红包时用到】
5.微信公众号的 “微信支付“ 中的 ”商户号” 要开通微信支付【发红包的金额是该支付账户扣款】，开通“现金红包”接口【调用该接口发放红包】。
6. 登陆 ”商户号”【微信公众号分配的商户号。第5 中有说明】 在 “API安全” 中 下载PHP版的 证书 【.pem格式】
以上如描述不清楚，请查看 微信开发者文档 里面有详细的秒杀。
部分代码如下【其余的请查看附件】：
isWeixin();//是否是微信打开 if($this->access) { $this->display(); } else { $class=new Oauth(); $class->index('http://www.myweb.com/index.php/Index/oauth'); } } //获取用户信息 openID public function oauth() { $code=isset($_GET['code'])?strip_tags(trim($_GET['code'])):''; $state=isset($_GET['state'])?strip_tags(trim($_GET['state'])):''; $class=new Oauth(); $userInfo=$class->getCode($code,$state);//获取用户信息 if(!empty($userInfo['data'])) { //$model=M('wxuser'); //$result=$model->where('openid = "'.$userInfo['data']->openid.'"')->field('openid')->select(); if(empty($result)) { $userInfo['data']=$this->object2array($userInfo['data']); $model->data($userInfo['data'])->add(); } } $userInfo['data']=$this->object2array($userInfo['data']); //创建红包 $class=new CreateRedPack(); $red=$class->redval(); //发红包 $class=new SendRedPack(); $configs=array( 'send_name'=>'红包发送者名称',//红包发送者名称 're_openid'=>$userInfo['data']['openid'],//接受红包的用户,用户在wxappid下的openid 'total_amount'=>$red,//付款金额，单位分 'total_num'=>'1',//红包发放总人数 'wishing'=>'红包祝福语',//红包祝福语 'client_ip'=>$_SERVER['SERVER_ADDR'],//调用接口的机器Ip地址 'act_name'=>'活动名称',//活动名称 'remark'=>'备注信息',// 备注信息 ); $class->setFields($configs); $result=$class->requestXml(); //微信返回信息处理 if(strtoupper($result['return_code'])=='SUCCESS') { if(strtoupper($result['result_code'])=='SUCCESS') { //红包发送成功! $datas['flag']=1; echo $result['err_code_des']; } else { //红包发送失败 $datas['flag']=0; $datas['msg']=$result['err_code_des']; echo $result['err_code_des']; } } else { //红包发送失败 $datas['flag']=0; $datas['msg']=$result['err_code_des']; echo $result['err_code_des']; } } public function isWeixin() { if (strpos($_SERVER['HTTP_USER_AGENT'], 'MicroMessenger') !== false) { $this->access=true; } return false; } //类转换成数组 public function object2array($object) { if (is_object($object)) { foreach ($object as $key => $value) { $array[$key] = $value; } } else { $array = $object; } return $array; } } ?>1.0,'max'=>1.1), array('min'=>1.1,'max'=>1.2), array('min'=>1.2,'max'=>1.95) ); public function __construct() { $this->rid=mt_rand(1,10000);//当前红包随机数 $this->rand_arr=range(1,3500);//35%是1.0到1.1 $this->rand_arr1=range(3501,7000);//35%是1.1到1.2 $this->rand_arr2=range(7001,10000);//30%是1.2到1.95 $this->simplered=666; } public function redval() { $maxrp=$this->maxred();//随机最大红包金额 if($maxrp!=$this->simplered) { if(in_array($this->rid,$this->rand_arr)) { $red_val=$this->red_config[0]; $min=$red_val['min']*100; $max=$red_val['max']*100; $this->red=mt_rand($min,$max); $this->red=$this->red/100; } elseif(in_array($this->rid,$this->rand_arr1)) { $red_val=$this->red_config[1]; $min=$red_val['min']*100; $max=$red_val['max']*100; $red=mt_rand($min,$max); $this->red=$this->red/100; } elseif(in_array($this->rid,$this->rand_arr2)) { $red_val=$this->red_config[2]; $min=$red_val['min']*100; $max=$red_val['max']*100; $this->red=mt_rand($min,$max); $this->red=$this->red/100; } } else { $this->red=$maxrp; } return $this->red?$this->red:1; } protected function maxred() { $rid=mt_rand(1,100000); $rid1=mt_rand(1,100000); $red=0; $dff=$rid-$rid1; if($dff > 0) { if(($rid1%$rid1)==$this->simplered) { $red=$this->simplered; } } else { if(($rid1%$rid)==$this->simplered) { $red=$this->simplered; } } return $red; } } ?>0,'msg'=>'','data'=>''); public function __construct() { $this->appid='appid';// $this->appsecret='secret';//; $this->state=mt_rand(100,999); } //引导用户访问链接处理函数 public function index($redirect_uri) { $this->redirect_uri=urlencode($redirect_uri);//微信自动跳转到$redirect_uri header('location:
'.$this->appid.'&redirect_uri='.$this->redirect_uri.'/oauth.php&response_type=code&scope=snsapi_userinfo&state='.$this->state.'&connect_redirect=1#wechat_redirect'); } public function getCode($code='',$state='',$token='',$webToken='') { $data=array( 'errorno'=>'', 'errormsg'=>'', 'data'=>'' ); if(empty($code)) { $this->data['flag']=0; $this->data['msg']='授权失败！'; } else { /* 1获取webtoken 2获取reflash_token 3获取用户信息 */ $token_url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid='.$this->appid.'&secret='.$this->appsecret.'&code='.$code.'&grant_type=authorization_code'; $token = json_decode(file_get_contents($token_url)); if (isset($token->errcode)) { $data['errorno']=$token->errcode; $data['errormsg']=$token->errmsg; } else { $access_token_url = 'https://api.weixin.qq.com/sns/oauth2/refresh_token?appid='.$this->appid.'&grant_type=refresh_token&refresh_token='.$token->refresh_token; //转成对象 $accessToken = json_decode(file_get_contents($access_token_url)); if (isset($accessToken->errcode)) { $data['errorno']=$token->errcode; $data['errormsg']=$token->errmsg; } else { $user_info_url = 'https://api.weixin.qq.com/sns/userinfo?access_token='.$accessToken->access_token.'&openid='.$accessToken->openid.'&lang=zh_CN'; //转成对象 $userInfo = json_decode(file_get_contents($user_info_url)); if (isset($userInfo->errcode)) { $data['errorno']=$token->errcode; $data['errormsg']=$token->errmsg; } else { $data['data']=$userInfo; } } } } return $data; } } ?>'',//随机字符串，不长于32位 'sign'=>'',//签名 'mch_billno'=>'',//商户订单号 'mch_id'=>'1111sdfsafsaddf',//微信支付分配的商户号 'wxappid'=>'sddafdsadfdsafdsdd',//微信分配的公众账号ID 'send_name'=>'',//红包发送者名称 're_openid'=>'',//接受红包的用户,用户在wxappid下的openid 'total_amount'=>'',//付款金额，单位分 'total_num'=>'',//红包发放总人数 'wishing'=>'',//红包祝福语 'client_ip'=>'',//调用接口的机器Ip地址 'act_name'=>'',//活动名称 'remark'=>'',// 备注信息 ); protected $key=''; protected $url='https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack'; protected $requestXml=''; //设置必要参数 public function setFields($conf=array()) { foreach($conf as $k=>$v) { if(isset($this->config[$k]) && !empty($v)) { $this->config[$k]=$v; } } $this->config['mch_billno']=$this->billno(); $this->config['nonce_str']=$this->createNonceStr(); $this->createSign($conf); $this->createXml(); //echo $this->requestXml; } protected function billno() { return $this->config['mch_id'].time().md5(mt_rand(1000,9999)); } /* //检查必要参数是否为空！ public function checkConfig() { $flag=true; foreach($this->config as $k=>$v) { if(empty($v)) { $flag=false; break; } } } */ //随机字符串，不长于32位 public function createNonceStr( $len=32 ) { $strs = "abcdefghijklmnopqrstuvwxyz0123456789"; $str =""; $len=$len<=32?$len:32; for ( $i = 0; $i < $len; $i++ ) { $str.= substr($strs, mt_rand(0, strlen($strs)-1), 1); } return $str; } //格式化参数 public function formatParam($config=array(),$flag=1) { $format=''; if(!empty($config)) { ksort($config); foreach($config as $k=>$v) { if($flag) { $v=urlencode($v); } if($flag==0 && strtolower($k)=='sign') { continue; } $format.=$k.'='.$v.'&'; } $format=trim($format,'&'); } return $format; } //创建SIGNATURE protected function createSign($config) { $format=$this->formatParam($config,0); $format.='&key='.$this->key; $signature=strtoupper(md5($format)); $this->config['sign']=$signature; return true;//$signature; } //创建xml格式数据 protected function createXml() { $xml=''; foreach($this->config as $k=>$v) { if(!empty($v)) { $xml.='<'.$k.'>'; } } $xml.=' '; $this->requestXml=$xml; } //XML格式数据转换为数组 public function createArray($xml='') { $arr = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true); return $arr; } //发送红包 public function requestXml($timeout=30,$header=array()) { $ch = curl_init(); //超时时间 curl_setopt($ch,CURLOPT_TIMEOUT,$timeout); curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch,CURLOPT_URL,$this->url); curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false); curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false); //默认格式为PEM，可以注释 curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM'); curl_setopt($ch,CURLOPT_SSLCERT,dirname(__FILE__).'/apiclient_cert.pem');//pem证书地址 //默认格式为PEM，可以注释 curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM'); curl_setopt($ch,CURLOPT_SSLKEY,dirname(__FILE__).'/apiclient_key.pem');//key证书地址 curl_setopt($ch,CURLOPT_CAINFO,'PEM'); curl_setopt($ch,CURLOPT_CAINFO,dirname(__FILE__).'/rootca.pem');//CA证书地址 //两个文件合成一个.pem文件 //curl_setopt($ch,CURLOPT_SSLCERT,getcwd().'/all.pem'); if( count($header) >= 1 ) { curl_setopt($ch, CURLOPT_HTTPHEADER, $header); } curl_setopt($ch,CURLOPT_POST, 1); curl_setopt($ch,CURLOPT_POSTFIELDS,$this->requestXml); $data = curl_exec($ch); var_dump($data); if($data) { curl_close($ch); var_dump($data); return $data; } else { $error = curl_errno($ch); echo 'ERROR:'.$error; curl_close($ch); return false; } } //返回非空值，非NULL public function notEmpty($val='') { $return=''; if(null !=$val && strlen($val) != 0) { $return=$val; } return $return?$return:false; } } ?>'1','expires'=>'7200'); } //设置获取ACCESSTOKEN 的URL public function setUrl() { return $this->url=$this->url.'?grant_type='.$this->grant_type.'&appid='.$this->AppID.'&secret='.$this->AppSecret; } //获取APPID,SECRET public function getAppid() { $sql='select appid,secret from ly_appid where flag=1'; $model=M(); $result=$model->query($sql); if(!empty($result)) { $this->AppID=$result[0]['appid']; $this->AppSecret=$result[0]['secret']; return $result[0]; } } public function object2array($object) { if (is_object($object)) { foreach ($object as $key => $value) { $array[$key] = $value; } } else { $array = $object; } return $array; } //检验URL有效 public function checkUrl() { $signature=isset($_GET['signature'])?strip_tags(trim($_GET['signature'])):''; $timestamp=isset($_GET['timestamp'])?strip_tags(trim($_GET['timestamp'])):''; $nonce=isset($_GET['nonce'])?strip_tags(trim($_GET['nonce'])):''; $echostr=isset($_GET['echostr'])?$_GET['echostr']:''; if(!empty($signature) && !empty($timestamp) && !empty($nonce)) { if($this->checkSign($signature,$timestamp,$nonce)) { echo $echostr; return true; } else { return false; } } } //验证SIGNATURE是否有效 private function checkSign($sign,$timestamp,$nonce) { $token=$this->getAccessToken(); //$token=$this->object2array($token); $sign_arr=array($token,$timstamp,$nonce); sort($sign_arr,SORT_STRING); $signStr=implode($sign_arr); $signStr=sha1($signStr); if(strtoupper($signStr)==strtoupper($sign)) { return true; } return false; } //通过微信接口获取微信Access_Token public function getAccessToken() { $token=''; $this->setUrl(); $check=$this->checkToken(); if(session('?'.md5('getaccesstoken')) && $check) { $tokens=session(md5('getaccesstoken')); $token=$tokens->access_token; } else { $result=file_get_contents($this->url); $result=json_decode($result); $token=$result->access_token; $result->expires_in=$result->expires_in+time(); session(md5('getaccesstoken'),$result); } return $token; } //检查微信ACCESS_TOKEN是否有效 public function checkToken() { if(session('?'.md5('getaccesstoken')) && session(md5('getaccesstoken'))) { $time=time(); $token=session(md5('getaccesstoken')); if($token->expires_in-$time > 30) { return true; } else { session(md5('getaccesstoken'),null); } } return false; } //保存微信ACCESSTOKEN到数据库 public function saveAccessToken() { $token=$this->getAccessToken(); $sql='select `id`,`rate`,token,ex_time,createtime from ly_token where token="'.$token.'" where appid="'.$this->AppID.'" AND secret="'.$this->AppSecret.'"'; $model=M(); $result=$model->query($sql); if(!empty($result)) { $time=time(); $expires=$time-$result[0]['createtime']; if($result[0]['ex_time']-$expires > 0) { return $result[0]['token']; } else { $token=$this->getAccessToken(); if(!empty($token)) { $token=json_decode($token); if(!isset($token['errcode']) or !$token['errcode']) { if(isset($token['access_token']) && $token['access_token']) { $data['access_token']=$token['access_token']; $data['createtime']=$time; $data['ex_time']=$token['expires_in']; $data['rate']=$result[0]['rate']+1; //$sql='update ly_token set token="'.$token['access_token'].'" ,createtime='.$time.',ex_time='.$token['expires_in'].' where `id`='.$result[0]['id']; $model=M('token'); $update=$model->where('`id`='.$result[0]['id'])->save($data); if($update) { return $token['access_token']; } } } else {//微信返回的错误信息 $data['errcode']=$token['errcode']; $data['errmsg']=$token['errmsg']; $data['appid']=$this->AppID; $data['secret']=$this->AppSecret; $data['createtime']=time(); $data['rate']=$result[0]['rate']+1; $ein=$model->where('`id`='.$result[0]['id'])->save($data); if($ein) { return false; } } } } } else {//新插入数据库保存 $token=$this->getAccessToken(); $model=M('token'); if(!empty($token)) { $data=array(); $token=json_decode($token); if(!isset($token['errcode']) or !$token['errcode']) { if(isset($token['access_token']) && $token['access_token']) { $data['access_token']=$token['access_token']; $data['createtime']=$time; $data['ex_time']=$token['expires_in']; //$sql='insert into ly_token() vlaues()'; $data['rate']=1; $in=$model->data($data)->add(); if($ein) { $token['access_token']; } } } else {//微信返回的错误信息 $data['errcode']=$token['errcode']; $data['errmsg']=$token['errmsg']; $data['appid']=$this->AppID; $data['secret']=$this->AppSecret; $data['createtime']=time(); $data['rate']=1; $ein=$model->data($data)->add(); if($ein) { return false; } } } } return false; } } ?>以上就是 微信现金红包接口实现红包发放的示例代码分享的详细内容，更多请关注php中文网其它相关文章！
