<?php
require_once '../zhifubao/Rsa.class.php';
require_once '../zhifubao/Base.class.php';
require_once '../zhifubao/Alipay.class.php';
//构建支付请求 可以传递MD5 RSA RSA2三种参数
$obj = new Alipay();$data = ['payee_account'  => 'xxxxx', //收款方账户'amount'  => 'xxxx', //金额
];//UTF-8格式的json数据
$res = iconv('gbk','utf-8',$obj->transfer($data));echo '<pre>';
//转换为数组
$res = json_decode($res,true);print_r($res);

<?php
class Alipay extends Base
{const TRANSFER = 'https://openapi.alipay.com/gateway.do';public function __construct() {}//转账public function transfer($data){//公共请求参数$pub_params = ['app_id'    => self::APPID,'method'    =>  'alipay.fund.trans.toaccount.transfer', //接口名称 应填写固定值alipay.fund.trans.toaccount.transfer'format'    =>  'JSON', //目前仅支持JSON'charset'    =>  'UTF-8','sign_type'    =>  'RSA2',//签名方式'sign'    =>  '', //签名'timestamp'    => date('Y-m-d H:i:s'), //发送时间 格式0000-00-00 00:00:00'version'    =>  '1.0', //固定为1.0'biz_content'    =>  '', //业务请求参数的集合];//请求参数$api_params = ['out_biz_no'  => date('YmdHis'),//商户转账订单号'payee_type'  => 'ALIPAY_LOGONID', //收款方账户类型'payee_account'  => $data['payee_account'], //收款方账户'amount'  => $data['amount'], //金额];$pub_params['biz_content'] = json_encode($api_params,JSON_UNESCAPED_UNICODE);$pub_params =  $this->setRsa2Sign($pub_params);return $this->curlRequest(self::TRANSFER, $pub_params);}
}

<?php
class Base extends RSA
{
/**
* 以下信息需要根据自己实际情况修改
*/
//自己的私钥
const APPPRIKEY = 'xxxxx'; //修改成自己的 应用私钥
//申请到的APPID
const APPID = 'xxxxx';
//支付宝公钥，不是你自己生成的公钥
const NEW_ALIPUBKE ='xxxx'; //修改成自己的 支付宝公钥public function getStr($arr,$type = 'RSA'){//筛选if(isset($arr['sign'])){unset($arr['sign']);}if(isset($arr['sign_type']) && $type == 'RSA'){unset($arr['sign_type']);}//排序ksort($arr);//拼接return  $this->getUrl($arr,false);
}
//将数组转换为url格式的字符串
public function getUrl($arr,$encode = true){if($encode){return http_build_query($arr);}else{return urldecode(http_build_query($arr));}
}//获取签名RSA2
public function getRsa2Sign($arr){return $this->rsaSign($this->getStr($arr,'RSA2'), self::APPPRIKEY,'RSA2') ;
}
//获取含有签名的数组RSA
public function setRsa2Sign($arr){$arr['sign'] = $this->getRsa2Sign($arr);return $arr;
}
public function checkSign($arr){if($this->getRsa2Sign($arr) == $arr['sign']){return true;}else{return false;}
}public function curlRequest($url,$data = ''){$ch = curl_init();$params[CURLOPT_URL] = $url;    //请求url地址$params[CURLOPT_HEADER] = false; //是否返回响应头信息$params[CURLOPT_RETURNTRANSFER] = true; //是否将结果返回$params[CURLOPT_FOLLOWLOCATION] = true; //是否重定向$params[CURLOPT_TIMEOUT] = 30; //超时时间if(!empty($data)){$params[CURLOPT_POST] = true;$params[CURLOPT_POSTFIELDS] = $data;}$params[CURLOPT_SSL_VERIFYPEER] = false;//请求https时设置,还有其他解决方案$params[CURLOPT_SSL_VERIFYHOST] = false;//请求https时,其他方案查看其他博文curl_setopt_array($ch, $params); //传入curl参数$content = curl_exec($ch); //执行curl_close($ch); //关闭连接return $content;
}}

<?php
class RSA
{
/**
* RSA签名
* @param $data 待签名数据
* @param $private_key 私钥字符串
* return 签名结果
*/
function rsaSign($data, $private_key,$type = 'RSA') {$search = [
"-----BEGIN RSA PRIVATE KEY-----",
"-----END RSA PRIVATE KEY-----",
"\n",
"\r",
"\r\n"
];$private_key=str_replace($search,"",$private_key);
$private_key=$search[0] . PHP_EOL . wordwrap($private_key, 64, "\n", true) . PHP_EOL . $search[1];
$res=openssl_get_privatekey($private_key);if($res)
{
if($type == 'RSA'){
openssl_sign($data, $sign,$res);
}elseif($type == 'RSA2'){
//OPENSSL_ALGO_SHA256
openssl_sign($data, $sign,$res,OPENSSL_ALGO_SHA256);
}
openssl_free_key($res);
}else {
exit("私钥格式有误");
}
$sign = base64_encode($sign);
return $sign;
}/**
* RSA验签
* @param $data 待签名数据
* @param $public_key 公钥字符串
* @param $sign 要校对的的签名结果
* return 验证结果
*/
function rsaCheck($data, $public_key, $sign,$type = 'RSA')  {
$search = [
"-----BEGIN PUBLIC KEY-----",
"-----END PUBLIC KEY-----",
"\n",
"\r",
"\r\n"
];
$public_key=str_replace($search,"",$public_key);
$public_key=$search[0] . PHP_EOL . wordwrap($public_key, 64, "\n", true) . PHP_EOL . $search[1];
$res=openssl_get_publickey($public_key);
if($res)
{
if($type == 'RSA'){
$result = (bool)openssl_verify($data, base64_decode($sign), $res);
}elseif($type == 'RSA2'){
$result = (bool)openssl_verify($data, base64_decode($sign), $res,OPENSSL_ALGO_SHA256);
}
openssl_free_key($res);
}else{
exit("公钥格式有误!");
}
return $result;
}}