WeChat 開発とアプリケーション統合に PHP を使用する方法

php -v

$signature = $_GET['signature'];
$timestamp = $_GET['timestamp'];
$nonce = $_GET['nonce'];
$echostr = $_GET['echostr'];

// 此处可以进行其他业务逻辑的处理

echo $echostr;

$token = 'YourAppToken'; // 替换为你的AppToken

$tmpArr = array($token, $timestamp, $nonce);
sort($tmpArr);
$tmpStr = implode($tmpArr);
$tmpStr = sha1($tmpStr);

if ($tmpStr == $signature) {
    // 验证通过，返回true
    return true;
} else {
    // 验证失败，返回false
    return false;
}

$postData = $GLOBALS['HTTP_RAW_POST_DATA'];

if (!empty($postData)) {
    $postObj = simplexml_load_string($postData, 'SimpleXMLElement', LIBXML_NOCDATA);

    $msgType = $postObj->MsgType;
    $content = $postObj->Content;

    // 在这里可以根据不同的消息类型进行相应的逻辑处理
}

function replyTextMessage($fromUsername, $toUsername, $content) {
    $time = time();

    $response = sprintf(
        '<xml>
            <ToUserName><![CDATA[%s]]></ToUserName>
            <FromUserName><![CDATA[%s]]></FromUserName>
            <CreateTime>%s</CreateTime>
            <MsgType><![CDATA[text]]></MsgType>
            <Content><![CDATA[%s]]></Content>
        </xml>',
        $toUsername,
        $fromUsername,
        $time,
        $content
    );

    echo $response;
}

function getPrepayId($outTradeNo, $totalFee, $notifyUrl) {
    $url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
    $data = array(
        'appid' => 'YourAppID', // 替换为你的AppID
        'mch_id' => 'YourMchID', // 替换为你的MchID
        'nonce_str' => str_shuffle('abcdefghijklmnopqrstuvwxyz1234567890'),
        'body' => '订单支付',
        'out_trade_no' => $outTradeNo,
        'total_fee' => $totalFee,
        'spbill_create_ip' => $_SERVER['REMOTE_ADDR'],
        'notify_url' => $notifyUrl,
        'trade_type' => 'JSAPI',
        'openid' => 'UserOpenID' // 替换为用户的OpenID
    );

    // 计算签名
    ksort($data);
    $string = http_build_query($data) . '&key=YourKey'; // 替换为你的Key
    $data['sign'] = strtoupper(md5($string));

    // 发送请求
    $xml = '<xml>';
    foreach ($data as $key => $value) {
        $xml .= sprintf('<%s>%s</%s>', $key, $value, $key);
    }
    $xml .= '</xml>';

    $response = file_get_contents($url, false, stream_context_create(array(
        'http' => array(
            'method' => 'POST',
            'header' => 'Content-Type: text/xml',
            'content' => $xml
        )
    )));

    // 解析结果
    $responseObj = simplexml_load_string($response, 'SimpleXMLElement', LIBXML_NOCDATA);

    return $responseObj->prepay_id;
}

function getPaySign($prepayId, $appId, $timeStamp, $nonceStr) {
    $data = array(
        'appId' => $appId,
        'timeStamp' => $timeStamp,
        'nonceStr' => $nonceStr,
        'package' => 'prepay_id=' . $prepayId,
        'signType' => 'MD5'
    );

    // 计算签名
    ksort($data);
    $string = http_build_query($data) . '&key=YourKey'; // 替换为你的Key
    $sign = strtoupper(md5($string));

    return $sign;
}