微信红包接口
微信红包是微信支付推出的一款基于微信客户端的免费服务应用，微信红包以微信支付
为核心安全保障，为广大用户提供安全，快捷的移劢支付服务。
请求URL
现金红包
https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack
裂变红包
https://api.mch.weixin.qq.com/mmpaymkttransfers/sendgroupredpack
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请求的参数：
以现金红包为例：请求参数示例：
123123 1281216601201609200000000000 1281216601 1231 1.00 1
核心代码如下：
$config里面包含了必须的appid，和其他参数，可以看上图详情。只需调用yiy_send(要发送给谁的（openid）,金额，配置参数)
/*随机字符串*/ private function random($length, $numeric = FALSE) { $seed = base_convert(md5(microtime() . $_SERVER['DOCUMENT_ROOT']), 16, $numeric ? 10 : 35); $seed = $numeric ? (str_replace('0', '', $seed) . '012340567890') : ($seed . 'zZ' . strtoupper($seed)); if ($numeric) { $hash = ''; } else { $hash = chr(rand(1, 26) + rand(0, 1) * 32 + 64); $length--; } $max = strlen($seed) - 1; for ($i = 0; $i < $length; $i++) { $hash .= $seed{mt_rand(0, $max)}; } return $hash; } //发送红包 private function yiy_send($openid,$price,$config) { $uniacid = 2; $api = $config['api']; $activity = $config['activity']; $url = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack'; $pars = array(); $pars['nonce_str'] = $this->random(32); $pars['mch_billno'] = $api['mchid'] . date('YmdHis'); $pars['mch_id'] = $api['mchid']; $pars['wxappid'] = $api['appid']; $pars['send_name'] = $activity['provider']; $pars['re_openid'] = $openid; $pars['total_amount'] = $price*100; $pars['total_num'] = 1; $pars['wishing'] = $activity['wish']; $pars['client_ip'] = $api['ip']; $pars['act_name'] = $activity['title']; $pars['remark'] = $activity['remark']; ksort($pars); $string1 = ''; foreach($pars as $k => $v) { $string1 .= "{$k}={$v}&"; } $string1 .= "key={$api['password']}"; $pars['sign'] = strtoupper(md5($string1)); $xml = $this->array2xml($pars); define(M_PATH, dirname(__FILE__). '/./../../../../addons/ly_huilife/'); $extras = array(); //此处为证书位置（绝对路径），改成适合自己的，我这里放的比较那啥。。。。忽略/// $extras['CURLOPT_CAINFO'] = M_PATH . '/cert/rootca.pem.' . $uniacid; $extras['CURLOPT_SSLCERT'] = M_PATH . '/cert/apiclient_cert.pem.' . $uniacid; $extras['CURLOPT_SSLKEY'] = M_PATH . '/cert/apiclient_key.pem.' . $uniacid; $procResult = null; $resp = $this->CurlPostSsl($url, $xml, $extras); return $resp; } //提交 private function CurlPostSsl($url,$xml,$extras){ $ch = curl_init(); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 60); curl_setopt($ch,CURLOPT_TIMEOUT,60); curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch,CURLOPT_URL,$url); curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false); curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false); curl_setopt($ch, CURLOPT_SSLVERSION, 1); curl_setopt($ch,CURLOPT_SSLCERT,$extras['CURLOPT_SSLCERT']); curl_setopt($ch,CURLOPT_SSLKEY,$extras['CURLOPT_SSLKEY']); curl_setopt($ch,CURLOPT_CAINFO,$extras['CURLOPT_CAINFO']); curl_setopt($ch,CURLOPT_POST, 1); curl_setopt($ch,CURLOPT_POSTFIELDS,$xml); $data = curl_exec($ch); var_dump($data); if($data){ curl_close($ch); $rsxml = simplexml_load_string($data); if($rsxml->return_code == 'SUCCESS' && $rsxml->result_code == 'SUCCESS'){ return array('code'=>1,'msg'=>'发放成功'); }else{ //这里你可以获取，并返回详细失败信息，我这里都用这种方式返回了。 return array('code'=>0,'msg'=>'#1未知错误，稍后再试'); } }else{ $error = curl_errno($ch); curl_close($ch); return array('code'=>0,'msg'=>$error ); } } function array2xml($arr, $level = 1) { $s = $level == 1 ? " " : ''; foreach ($arr as $tagname => $value) { if (is_numeric($tagname)) { $tagname = $value['TagName']; unset($value['TagName']); } if (!is_array($value)) { $s .= "<{$tagname}>" . (!is_numeric($value) ? '' : '') . " "; } else { $s .= "<{$tagname}>" . array2xml($value, $level + 1) . " "; } } $s = preg_replace("/([\x01-\x08\x0b-\x0c\x0e-\x1f])+/", ' ', $s); return $level == 1 ? $s . " " : $s; } 正确的返回结果是:
注意：传入的金额是以分为单位，比如1元，要写成100，不然红包过小会失败的（红包大于等于1元，小于等于200元），比如这样返回：
1
更详细的文档：官方pdf：