PHP implements mobile website payment (compatible with WeChat browser)

Many PHP Alipay payment access tutorials on the Internet are quite complicated and require a lot of configuration and introduction of files. , I have sorted it out and given a single file version, hoping it can bring some help and reference to everyone who wants to access Alipay payment.

Recommended: "PHP Video Tutorial"

One PHP file to handle the Alipay series: https://github.com/dedemao/alipay

One PHP file to handle the WeChat payment series: https://github.com/dedemao/weixinPay

Open in the mobile browser to achieve the effect

Open in WeChat to achieve the effect

Note: Compatibility with WeChat browser requires the demo provided by Alipay (alipay_in_weixin_demo) Two files, namely: ap.js and pay.htm

environment depends on

PHP5.0 or above, and requires Enable CURL service and SSL service.

If you need to be compatible with WeChat browser, you also need to rely on ap.js and pay.htm.

Notes

1. The configuration information at the beginning of the file must be complete
2. The merchant’s private key must be filled in with the private key corresponding to the signature algorithm type. How to generate the key reference:
2.1 https://docs.open.alipay.com/291/105971
2.2 https://docs.open.alipay.com/200/105310

code

<?php
header(&#39;Content-type:text/html; Charset=utf-8&#39;);
$appid = &#39;xxxxx&#39;;  //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 = &#39;http://www.xxx.com/alipay/return.php&#39;;     //付款成功后的同步回调地址
$notifyUrl = &#39;http://www.xxx.com/alipay/notify.php&#39;;     //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 = &#39;支付测试&#39;;    //订单标题
$signType = &#39;RSA2&#39;;       //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=&#39;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&#39;;
$aliPay = new AlipayService($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 = &#39;utf8&#39;;
        $this->rsaPrivateKey=$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
        $requestConfigs = array(
            &#39;out_trade_no&#39;=>$outTradeNo,
            &#39;product_code&#39;=>&#39;QUICK_WAP_WAY&#39;,
            &#39;total_amount&#39;=>$totalFee, //单位 元
            &#39;subject&#39;=>$orderName,  //订单标题
        );
        $commonConfigs = array(
            //公共参数
            &#39;app_id&#39; => $this->appId,
            &#39;method&#39; => &#39;alipay.trade.wap.pay&#39;,             //接口名称
            &#39;format&#39; => &#39;JSON&#39;,
            &#39;return_url&#39; => $returnUrl,
            &#39;charset&#39;=>$this->charset,
            &#39;sign_type&#39;=>&#39;RSA2&#39;,
            &#39;timestamp&#39;=>date(&#39;Y-m-d H:i:s&#39;),
            &#39;version&#39;=>&#39;1.0&#39;,
            &#39;notify_url&#39; => $notifyUrl,
            &#39;biz_content&#39;=>json_encode($requestConfigs),
        );
        $commonConfigs["sign"] = $this->generateSign($commonConfigs, $commonConfigs[&#39;sign_type&#39;]);
        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(&#39;您使用的私钥格式错误，请检查RSA私钥配置&#39;);
        if ("RSA2" == $signType) {
            openssl_sign($data, $sign, $res, version_compare(PHP_VERSION,&#39;5.4.0&#39;, &#39;<&#39;) ? SHA256 : OPENSSL_ALGO_SHA256); //OPENSSL_ALGO_SHA256是php5.4.8以上版本才支持
        } else {
            openssl_sign($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[&#39;HTTP_USER_AGENT&#39;],&#39;MicroMessenger&#39;) !== false ) {
        return true;
    }
    return false;
}
$queryStr = http_build_query($payConfigs);
if(isWeixin()):
?>
<script type="text/javascript" src="ap.js"></script>
<script>
    var gotoUrl = &#39;https://openapi.alipay.com/gateway.do?<?=$queryStr?>&#39;;
    _AP.pay(gotoUrl);
</script>
<?php
    else:
        header("Location:https://openapi.alipay.com/gateway.do?{$queryStr}");
    endif;
?>

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