签名算法

$params = array (
  'appid' => 'APPID',
  'gntime' => 1234567890,
  'ym' => 'gname.com',
  'url' => 'https://www.gname.com'
);

$stringA = "appid=APPID&gntime=1234567890&value=https%3A%2F%2Fwww.example.com&ym=example.com";

$appkey  = "APPKEY" //注：appkey
$stringB = "appid=APPID&gntime=1234567890&value=https%3A%2F%2Fwww.example.com&ym=example.comAPPKEY";

//注：MD5签名方式 并转成大写
$gntoken = strtoupper(md5($stringB)); //B48D34C9A15A3F33ED61396E5BD8F1F8

 //Curl Post
function getHttpResponsePOST($url,$para) {

	$curl = curl_init($url);
	//SSL
	if(substr($url, 0, 8)=== 'https://'){
		curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
		curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
	}
	curl_setopt($curl, CURLOPT_HEADER, 0 );
	curl_setopt($curl, CURLOPT_HTTPHEADER, [
        'Content-Type: application/x-www-form-urlencoded'
    ]);
	curl_setopt($curl,CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($curl,CURLOPT_POST,true); 
	curl_setopt($curl,CURLOPT_POSTFIELDS,http_build_query($para));
	$responseText = curl_exec($curl);
	curl_close($curl);
	
	return $responseText;
}

//All elements of the array are concatenated into strings with "&" characters according to the mode of "parameter=parameter value", and the strings are urlencoded
function createLinkstringUrlencode($para,$char="&") {
	
	$arg  = "";
	if($para){
		ksort($para);
		$params = [];
		foreach($para as $key=>$val){
			$params[]=$key."=".urlencode($val);
		}
		$arg = implode($char,$params);
	}

	return $arg;
}

//Sign
function md5Sign($prestr, $key) {
	$signstr = $prestr . $key;
	return strtoupper(md5($signstr));
}

//sign verify
function md5Verify($prestr, $sign, $key) {
	$mysgin = md5Sign($prestr,$key);

	if($mysgin == $sign) {
		return true;
	}
	else {
		return false;
	}
}

//UTC+8 timestamp
function getTimeStamp($datetime){

	$target_timezone = 'Asia/Singapore';
	$system_timezone = date('e'); 
	date_default_timezone_set($target_timezone); 
	$timestamp = strtotime($datetime); 
	date_default_timezone_set($system_timezone);

	return $timestamp;
}


$appid="YOUR_APPID";
$appkey = "YOUR_APPSECRET";
$apiHost = "API HOST";
$endPoint="api/domain/dns";

$data['appid'] = $appid;
$data['gntime'] = time();
$data['ym']="example.com";
$data['dns']="ns1.gname-dns.com,ns2.gname-dns.com";


$gntoken = md5Sign(createLinkstringUrlencode($data),$appkey);

$data['gntoken'] = $gntoken;

$requestUrl = "https://{$apiHost}/{$endPoint}";

$response = getHttpResponsePOST($requestUrl,$data);

exit($response);