如何使用 PHP 实现手机短信验证码功能

// 短信 API 的 URL
$url = 'http://XXXXX';

// Access Key ID 和 Access Key Secret
$accessKeyId = 'XXXXX';
$accessKeySecret = 'XXXXX';

// 签名
$signName = '【公司名】';

// 生成6位随机验证码
$code = rand(100000, 999999);

// 短信模板
$templateCode = 'SMS_XXXXX';
$templateParam = array(
    'code' => $code,
);

$params = array(
    'AccessKeyId' => $accessKeyId,
    'Action' => 'SendSms',
    'Format' => 'JSON',
    'PhoneNumbers' => $phoneNumber,
    'SignName' => $signName,
    'TemplateCode' => $templateCode,
    'TemplateParam' => json_encode($templateParam),
    'Timestamp' => gmdate("Y-m-dTH:i:sZ"),
    'Version' => '2017-05-25',
    'SignatureMethod' => 'HMAC-SHA1',
    'SignatureNonce' => uniqid(),
    'SignatureVersion' => '1.0',
);

ksort($params);

$canonicalizedQueryString = '';
foreach ($params as $key => $value) {
    $canonicalizedQueryString .= '&' . rawurlencode($key) . '=' . rawurlencode($value);
}

$stringToSign = 'GET' . '&%2F&' . rawurlencode(substr($canonicalizedQueryString, 1));

$signature = base64_encode(hash_hmac('sha1', $stringToSign, $accessKeySecret . '&', true));

$url .= '?' . $canonicalizedQueryString . '&Signature=' . rawurlencode($signature);

// 发送短信
$result = file_get_contents($url);

// 解析短信发送结果
$resultObject = json_decode($result, true);
if ($resultObject['Code'] == 'OK') {
    // 短信发送成功
    return $code;
} else {
    // 短信发送失败
    return false;
}

echo '验证码已发送至手机号' . $phoneNumber . '，请查收';

echo '验证码发送失败，请稍后再试';