微信开发 -- 企业付款 PHP代码实现


企业付款的应用场景: 公众号向已关注用户付款,比如处理退款、财务结算等


材料:微信公众平台开发文档



说明

1.证书需要用自己的商户里面的证书(注意:证书路径必须是绝对路径,如果使用相对路径会报下面的错误。


unable to use client certificate (no key found or wrong pass phrase?)


2.appid,secret以及key填写自己的即可。


先说一下实现思路:

1.首先获取openid,具体方法见下面。

2.填写必填参数,生成签名等,具体方法见下面。

/**
* API 参数
* @var array
* ‘mch_appid’ # 公众号APPID
* ‘mchid’ # 商户号
* ‘device_info’ # 设备号
* ‘nonce_str’ # 随机字符串
* ‘partner_trade_no’ # 商户订单号
* ‘openid’ # 收款用户openid
* ‘check_name’ # 校验用户姓名选项 针对实名认证的用户
* ‘re_user_name’ # 收款用户姓名
* ‘amount’ # 付款金额
* ‘desc’ # 企业付款描述信息
* ‘spbill_create_ip’ # Ip地址
* ‘sign’ # 签名
*/

参数参考: 企业付款API的文档


1.获取CODE(index.php页面)

 
//信息回调文件所在的服务器位置
$str="http://www.xxx.com/company_pay/getInfo.php";
$str_url=urlencode($str);
$appid = "xxxx3e5273505e";
$url = 'https://open.weixin.qq.com/connect/oauth2/authorize?appid='.$appid.'&redirect_uri='.$str_url.'&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect';

header("Location:".$url);


?>

2.信息回调页面代码处理(getInfo.php)



$appid = "wxxxxx3505e";//你的微信公众平台的appid
$secret = "fxxxxx71xxx4cda2a671";//你微信公众平台的secret
$code = $_GET["code"];
$get_token_url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid='.$appid.'&secret='.$secret.'&code='.$code.'&grant_type=authorization_code';

$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,$get_token_url);
curl_setopt($ch,CURLOPT_HEADER,0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
$res = curl_exec($ch);
curl_close($ch);
$json_obj = json_decode($res,true);

//根据openid和access_token查询用户信息
$access_token = $json_obj['access_token'];
$openid = $json_obj['openid'];
$get_user_info_url = 'https://api.weixin.qq.com/sns/userinfo?access_token='.$access_token.'&openid='.$openid.'&lang=zh_CN';

$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,$get_user_info_url);
curl_setopt($ch,CURLOPT_HEADER,0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
$res = curl_exec($ch);
curl_close($ch);

//解析json
$user_obj = json_decode($res,true);
//var_dump($user_obj);

echo "
"
."-----".$openid."*****"; $mch_appid=$appid; $mchid='10000401';//商户号 $nonce_str='vhmake'.rand(100000, 999999);//随机数 $partner_trade_no='VH'.time().rand(10000, 99999);//商户订单号 $openid=$openid;//用户唯一标识 $check_name='NO_CHECK';//校验用户姓名选项,NO_CHECK:不校验真实姓名 FORCE_CHECK:强校验真实姓名(未实名认证的用户会校验失败,无法转账)OPTION_CHECK:针对已实名认证的用户才校验真实姓名(未实名认证用户不校验,可以转账成功) $re_user_name='[北京微函工坊科技有限公司](http://www.vhmake.com)';//用户姓名 $amount=100;//金额(以分为单位,必须大于100) $desc='[北京微函工坊科技有限公司](http://www.vhmake.com)';//描述 $spbill_create_ip=$_SERVER["REMOTE_ADDR"];//请求ip //封装成数据 $dataArr=array(); $dataArr['amount']=$amount; $dataArr['check_name']=$check_name; $dataArr['desc']=$desc; $dataArr['mch_appid']=$mch_appid; $dataArr['mchid']=$mchid; $dataArr['nonce_str']=$nonce_str; $dataArr['openid']=$openid; $dataArr['partner_trade_no']=$partner_trade_no; $dataArr['re_user_name']=$re_user_name; $dataArr['spbill_create_ip']=$spbill_create_ip; require 'api.php'; $sign=getSign($dataArr); echo "-----
签名:"
.$sign."
*****"
;//die; $data=" ".$mch_appid." ".$mchid." ".$nonce_str." ".$partner_trade_no." ".$openid." ".$check_name." ".$re_user_name." ".$amount." ".$desc." ".$spbill_create_ip." ".$sign." "; //var_dump($data); $ch = curl_init (); $MENU_URL="https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers"; curl_setopt ( $ch, CURLOPT_URL, $MENU_URL ); curl_setopt ( $ch, CURLOPT_CUSTOMREQUEST, "POST" ); curl_setopt ( $ch, CURLOPT_SSL_VERIFYPEER, FALSE ); curl_setopt ( $ch, CURLOPT_SSL_VERIFYHOST, FALSE ); $zs1="/xxxx/xxx/xxxxxx/apiclient_cert.pem";//注意:填写的路径必须为绝对路径,不可以填写相对路径 $zs2="/xxxx/xxx/xxxxx/apiclient_key.pem"; curl_setopt($ch,CURLOPT_SSLCERT,$zs1); curl_setopt($ch,CURLOPT_SSLKEY,$zs2); // curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 5.01; // Windows NT 5.0)'); curl_setopt ( $ch, CURLOPT_FOLLOWLOCATION, 1 ); curl_setopt ( $ch, CURLOPT_AUTOREFERER, 1 ); curl_setopt ( $ch, CURLOPT_POSTFIELDS, $data ); curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, true ); $info = curl_exec ( $ch ); $infos=simplexml_load_string($info); if (curl_errno ( $ch )) { echo 'Errno:::' . curl_error ( $ch ); } curl_close ( $ch ); echo "-----
请求返回值:"
; echo $infos->return_code; echo "
*****"
; ?>

3.生成签名函数文件(api.php)



/**
 *  作用:格式化参数,签名过程需要使用
 */
function formatBizQueryParaMap($paraMap, $urlencode)
{
    $buff = "";
    ksort($paraMap);
    foreach ($paraMap as $k => $v)
    {
        if($urlencode)
        {
            $v = urlencode($v);
        }
        $buff .= $k . "=" . $v . "&";
    }
    if (strlen($buff) > 0)
    {
        $reqPar = substr($buff, 0, strlen($buff)-1);
    }
    return $reqPar;
}

/**
 *  作用:生成签名
 */
function getSign($Obj)
{
    foreach ($Obj as $k => $v)
    {
        $Parameters[$k] = $v;
    }
    //签名步骤一:按字典序排序参数
    ksort($Parameters);
    $String = formatBizQueryParaMap($Parameters, false);
    //echo '【string1】'.$String.'
';
//签名步骤二:在string后加入KEY $String = $String."&key=vhmake666vhmake666vhmake666vhmak"; //echo "【string2】".$String."
";
//签名步骤三:MD5加密 $String = md5($String); //echo "【string3】 ".$String."
";
//签名步骤四:所有字符转为大写 $result_ = strtoupper($String); //echo "【result】 ".$result_."
";
return $result_; }

成功之后返回xml格式的返回参数(具体的请参考开发文档)


<xml>
<return_code>return_code>
<return_msg>return_msg>
<mch_appid>mch_appid>
<mchid>mchid>
<device_info>device_info>
<nonce_str>nonce_str>
<result_code>result_code>
<partner_trade_no>partner_trade_no>
<payment_no>payment_no>
<payment_time>payment_time>
xml>

phpstorm小技巧:shift+F6给文件重命名


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