网上的很多PHP支付宝支付接入教程都颇为复杂，且需要配置和引入较多的文件，本人通过整理后给出一个单文件版的，希望可以给各位想接入支付宝支付的带来些许帮助和借鉴意义。

推荐：《PHP视频教程》

一个PHP文件搞定支付宝系列：https://gIThub.COM/dedemao/alipay

一个PHP文件搞定微信支付系列：https://github.com/dedemao/weixinPay

在手机浏览器下打开实现效果

在微信中打开实现效果

注：兼容微信浏览器需依赖支付宝官方提供的demo（alipay_in_weixin_demo）中的两个文件，即：ap.js及pay.htm

环境依赖

PHP5.0以上，且需要开启CURL服务、SSL服务。

如需兼容微信浏览器，还需依赖ap.js及pay.htm。

注意事项

1.文件开头的配置信息必须完善
2.商户私钥需填写对应签名算法类型的私钥，如何生成密钥参考：
2.1 https://docs.oPEn.alipay.com/291/105971
2.2 https://docs.open.alipay.com/200/105310

代码

?phpheader('Content-type:text/htML;
     Charset=utf-8');
    $appid = 'xxxxx';
      //https://open.alipay.com 账户中心->
    密钥管理->
    开放平台密钥，填写添加了电脑网站支付的应用的APPID$returnUrl = 'http://www.xxx.com/alipay/return.php';
         //付款成功后的同步回调地址$notifyUrl = 'http://www.xxx.com/alipay/notify.php';
         //付款成功后的异步回调地址$outTradeNo = uniqid();
         //你自己的商品订单号$payAmount = 0.01;
              //付款金额，单位:元$orderName = '支付测试';
        //订单标题$signType = 'RSA2';
           //签名算法类型，支持RSA2和RSA，推荐使用RSA2//商户私钥，填写对应签名算法类型的私钥，如何生成密钥参考：https://docs.open.alipay.com/291/105971和https://docs.open.alipay.com/200/105310$saPRivateKey='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';
    $aliPay = new AlipayService($appid,$returnUrl,$notifyUrl,$saPrivateKey);
    $payconfigs = $aliPay->
    doPay($payAmount,$outTradeNo,$orderName,$returnUrl,$notifyUrl);
class AlipayService{
        protected $appId;
        protected $returnUrl;
        protected $notifyUrl;
        protected $charset;
        //私钥值    protected $rsaPrivateKey;
    public function __construct($appid, $returnUrl, $notifyUrl,$saPrivateKey)    {
            $this->
    appId = $appid;
            $this->
    returnUrl = $returnUrl;
            $this->
    notifyUrl = $notifyUrl;
            $this->
    charset = 'utf8';
            $this->
    rsaPrivateKey=$saPrivateKey;
    }
    /**     * 发起订单     * @param float $totalFee 收款总费用 单位元     * @param string $outTradeNo 唯一的订单号     * @param string $orderName 订单名称     * @param string $notifyUrl 支付结果通知url 不要有问号     * @param string $timestamp 订单发起时间     * @return array     */    public function doPay($totalFee, $outTradeNo, $orderName, $returnUrl,$notifyUrl)    {
            //请求参数        $requestConfigs = array(            'out_trade_no'=>
    $outTradeNo,            'product_code'=>
    'QUICK_WAP_WAY',            'total_amount'=>
    $totalFee, //单位 元            'subject'=>
    $orderName,  //订单标题        );
            $commonConfigs = array(            //公共参数            'app_id' =>
     $this->
    appId,            'method' =>
     'alipay.trade.wap.pay',             //接口名称            'format' =>
     'JSON',            'return_url' =>
     $returnUrl,            'charset'=>
    $this->
    charset,            'sign_type'=>
    'RSA2',            'timestamp'=>
    date('Y-m-d H:i:s'),            'version'=>
    '1.0',            'notify_url' =>
     $notifyUrl,            'biz_content'=>
    json_encode($requestConfigs),        );
            $commonConfigs["sign"] = $this->
    generateSign($commonConfigs, $commonConfigs['sign_type']);
            return $commonConfigs;
    }
    public function generateSign($params, $signType = "RSA") {
            return $this->
    sign($this->
    getSignContent($params), $signType);
    }
    protected function sign($data, $signType = "RSA") {
            $priKey=$this->
    rsaPrivateKey;
            $res = "-----BEgin RSA PRIVATE KEY-----\n" .            wordwrap($priKey, 64, "\n", true) .            "\n-----END RSA PRIVATE KEY-----";
            ($res) or die('您使用的私钥格式错误，请检查RSA私钥配置');
        if ("RSA2" == $signType) {
                openssl_sign($data, $sign, $res, version_compare(PHP_VERSION,'5.4.0', '') ? SHA256 : OPENSSL_ALGO_SHA256);
 //OPENSSL_ALGO_SHA256是php5.4.8以上版本才支持        }
 else {
                openssl_sign($data, $sign, $res);
        }
            $sign = base64_encode($sign);
            return $sign;
    }
        /**     * 校验$value是否非空     *  if not set ,return true;
         *    if is null , return true;
     **/    protected function checkEmpty($value) {
            if (!isset($value))            return true;
            if ($value === null)            return true;
            if (trim($value) === "")            return true;
            return false;
    }
    public function getSignContent($params) {
            ksort($params);
            $stringToBeSigned = "";
            $i = 0;
            foreach ($params as $k =>
 $v) {
                if (false === $this->
    checkEmpty($v) &
    &
 "@" != substr($v, 0, 1)) {
                    // 转换成目标字符集                $v = $this->
    characet($v, $this->
    charset);
                if ($i == 0) {
                        $stringToBeSigned .= "$k" . "=" . "$v";
                }
 else {
                        $stringToBeSigned .= "&
    " . "$k" . "=" . "$v";
                }
                    $i++;
            }
        }
            unset ($k, $v);
            return $stringToBeSigned;
    }
    /**     * 转换字符集编码     * @param $data     * @param $targetcharset     * @return string     */    function characet($data, $targetCharset) {
        if (!empty($data)) {
                $fileType = $this->
    charset;
            if (strcasecmp($fileType, $targetCharset) != 0) {
                    $data = mb_convert_encoding($data, $targetCharset, $fileType);
            }
        }
            return $data;
    }
}
function isWeixin(){
    if ( strpos($_SERVER['HTTP_USER_AGENT'],'Micromessenger') !== false ) {
            return true;
    }
        return false;
}
    $queryStr = http_build_query($payConfigs);
    if(isWeixin()):?>
    script type="text/javascript" src="ap.js">
    /script>
    script>
        VAR gotoUrl = 'https://openapi.alipay.com/gateway.do??=$queryStr?>
    ';
        _AP.pay(gotoUrl);
    /script>
?php    else:        header("Location:https://openapi.alipay.com/gateway.do?{
$queryStr}
    ");
        endif;
    ?>
    

以上就是PHP实现手机网站支付（兼容微信浏览器）的详细内容，更多请关注其它相关文章！

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