<?php
//企业付款到微信零钱，PHP接口调用方法
define("APPID", "wx875439864"); //商户账号appid
define("MCHID", "190023450990"); // 商户号
define("SECRECT_KEY", "145535866885");  //支付密钥签名
define("IP", "120.178.12.52");   //IP

function createNoncestr($length =32) 
{
    $chars = "abcdefghijklmnopqrstuvwxyz0123456789";  
    $str ="";
    for ( $i = 0; $i < $length; $i++ )  {  
        $str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);  
    }  
    return $str;
}

function unicode() {
    $str = uniqid(mt_rand(),1);
    $str=sha1($str);
    return md5($str);
}
function arraytoxml($data){
    $str='<xml>';
    foreach($data as $k=>$v) {
        $str.='<'.$k.'>'.$v.'</'.$k.'>';
    }
    $str.='</xml>';
    return $str;
}
function xmltoarray($xml) { 
    //禁止引用外部xml实体 
    libxml_disable_entity_loader(true); 
    $xmlstring = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA); 
    $val = json_decode(json_encode($xmlstring),true); 
    return $val;
} 

function curl($param="",$url) {
    $postUrl = $url;
    $curlPost = $param;
    $ch = curl_init();                                      //初始化curl
    curl_setopt($ch, CURLOPT_URL,$postUrl);                 //抓取指定网页
    curl_setopt($ch, CURLOPT_HEADER, 0);                    //设置header
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);            //要求结果为字符串且输出到屏幕上
    curl_setopt($ch, CURLOPT_POST, 1);                      //post提交方式
    curl_setopt($ch, CURLOPT_POSTFIELDS, $curlPost);           // 增加 HTTP Header（头）里的字段 
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);        // 终止从服务端进行验证
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
    curl_setopt($ch,CURLOPT_SSLCERT,ROOT_PATH .'/wxpay/cacert/apiclient_cert.pem'); //这个是证书的位置绝对路径
    curl_setopt($ch,CURLOPT_SSLKEY,ROOT_PATH .'/wxpay/cacert/apiclient_key.pem'); //这个也是证书的位置绝对路径
    $data = curl_exec($ch);                                 //运行curl
    curl_close($ch);
    return $data;
}

/*
$amount 发送的金额（分）目前发送金额不能少于1元
$re_openid, 发送人的 openid
$desc  //  企业付款描述信息 (必填)
$check_name    收款用户姓名 (选填)
*/
function sendMoney($amount,$re_openid,$desc='测试',$check_name=''){

    $total_amount = (100) * $amount;

    $data=array(
        'mch_appid'=>APPID,//商户账号appid
        'mchid'=> MCHID,//商户号
        'nonce_str'=>createNoncestr(),//随机字符串
        'partner_trade_no'=> date('YmdHis').rand(1000, 9999),//商户订单号
        'openid'=> $re_openid,//用户openid
        'check_name'=>'NO_CHECK',//校验用户姓名选项,
        're_user_name'=> $check_name,//收款用户姓名
        'amount'=>$total_amount,//金额
        'desc'=> $desc,//企业付款描述信息
        'spbill_create_ip'=> IP,//Ip地址
    );
    $secrect_key=SECRECT_KEY;///这个就是个API密码。MD5 32位。
    $data=array_filter($data);
    ksort($data);
    $str='';
    foreach($data as $k=>$v) {
       $str.=$k.'='.$v.'&';
    }
    $str.='key='.$secrect_key;
    $data['sign']=md5($str);
    $xml=arraytoxml($data);

    $url='https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers'; //调用接口
    $res=curl($xml,$url);
    $return=xmltoarray($res);


    print_r($return);
    //返回来的结果
    // [return_code] => SUCCESS [return_msg] => Array ( ) [mch_appid] => wxd44b890e61f72c63 [mchid] => 1493475512 [nonce_str] => 616615516 [result_code] => SUCCESS [partner_trade_no] => 20186505080216815 
    // [payment_no] => 1000018361251805057502564679 [payment_time] => 2018-05-15 15:29:50


    $responseObj = simplexml_load_string($res, 'SimpleXMLElement', LIBXML_NOCDATA);
    echo $res= $responseObj->return_code;  //SUCCESS  如果返回来SUCCESS,则发生成功，处理自己的逻辑

    return $res;
}

?>

sendMoney(1,'ewrwexe32423423423423423','xxxx测试');