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
企业付款
https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers
请求的参数：
以现金红包为例：请求参数示例：
<xml> <act_name>123123</act_name> <client_ip> <![CDATA[127.0.0.1]]> </client_ip> <mch_billno> 1281216601201609200000000000 </mch_billno> <mch_id>1281216601</mch_id> <nonce_str> <![CDATA[CgSaD2zSG6ds2r2ulSuSmj3zKUXSukSS]]> </nonce_str> <re_openid> <![CDATA[okzyKwbDW-d7Spc0M112zWZjaa3E]]> </re_openid> <remark> 1231 </remark> <send_name> <![CDATA[haha哈]]> </send_name> <total_amount>1.00</total_amount> <total_num>1</total_num> <wishing> <![CDATA[祝您好运]]> </wishing> <wxappid> <![CDATA[wxa316d1ce30f2c952]]> </wxappid> <sign> <![CDATA[52F30DAD7E0ADFA842627179502BC2F3]]> </sign> </xml>
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 = $level == 1 ? "<xml>" : ‘‘;
foreach ($arr as $tagname => $value) {
if (is_numeric($tagname)) {
$tagname = $value[‘TagName‘];
unset($value[‘TagName‘]);
}
if (!is_array($value)) {
$s .= "<{$tagname}>" . (!is_numeric($value) ? ‘<![CDATA[‘ : ‘‘) . $value . (!is_numeric($value) ? ‘]]>‘ : ‘‘) . "</{$tagname}>";
} else {
$s .= "<{$tagname}>" . array2xml($value, $level + 1) . "</{$tagname}>";
}
}
$s = preg_replace("/([\x01-\x08\x0b-\x0c\x0e-\x1f])+/", ‘ ‘, $s);
return $level == 1 ? $s . "</xml>" : $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：
<xml> <return_code><![CDATA[SUCCESS]]></return_code> <return_msg><![CDATA[每个红包的平均金额必须在1.00元到200.00元之间.]]></return_msg> <result_code><![CDATA[FAIL]]></result_code> <err_code><![CDATA[MONEY_LIMIT]]></err_code> <err_code_des><![CDATA[每个红包的平均金额必须在1.00元到200.00元之间.]]></err_code_des> <mch_billno><![CDATA[1281216601201609200000000000]]></mch_billno> <mch_id><![CDATA[1281216601]]></mch_id> <wxappid><![CDATA[wxa316d1ce30f2c952]]></wxappid> <re_openid><![CDATA[okzyKwbDW-d7Spc0M112zWZjaa3E]]></re_openid> <total_amount>1</total_amount> </xml>
更详细的文档：官方pdf：https://pay.weixin.qq.com/helper/cashredopenapi_V2.pdf