最近專案用到阿里雲的簡訊服務，下載阿里雲簡訊服務官方SDK及DEMO，包含眾多的資料夾及檔案，一大堆的類，類引用地址也是亂的，沒法直接執行。

    裡面包含多個介面（簡訊傳送API，簡訊查詢API，簡訊訊息API），專案只需要簡訊傳送介面即可。

    只好研究下官方的文件，精簡程式碼。（研究的過程中發現官方的文件就是個坑，缺少很多欄位）

    精簡後的程式碼如下：（精簡採用POST方式JSON格式SHA1加密）

		$url = 'http://dysmsapi.aliyuncs.com/';
		$accessKeyId = "yourAccessKeyId
 
";
		$accessKeySecret = "yourAccessKeySecret";
		date_default_timezone_set("GMT");
		$Timestamp = date('Y-m-d\TH:i:s\Z');

		$parameters = [
			'PhoneNumbers' => '15000000000',
			'SignName' => '簡訊簽名',
			'TemplateCode' => '簡訊模板Code',
			'TemplateParam' => '{"code":"123456"}',
			'OutId' => '1234',
			'RegionId' => 'cn-hangzhou',
			'AccessKeyId' => $accessKeyId,
			'Format' => 'JSON',
			'SignatureMethod' => 'HMAC-SHA1',
			'SignatureVersion' => '1.0',
			'SignatureNonce' => uniqid(),
			'Timestamp' => $Timestamp,
			'Action' => 'SendSms',
			'Version' => '2017-05-25',
		];
		$Signature = $this->computeSignature($parameters, $accessKeySecret);
		$parameters['Signature'] = $Signature;
		echo curl_post($url,$parameters);
		exit;
 

	public function computeSignature($parameters, $accessKeySecret)
	{
	    ksort($parameters);
	    $canonicalizedQueryString = '';
	    foreach($parameters as $key => $value)
	    {
			$canonicalizedQueryString .= '&' . $this->percentEncode($key). '=' . $this->percentEncode($value);
	    }	
	    $stringToSign = 'POST'.'&%2F&' . $this->percentencode(substr($canonicalizedQueryString, 1));
		$signature = base64_encode(hash_hmac('sha1', $stringToSign, $accessKeySecret."&", true));
	    return $signature;
	}
	
	protected function percentEncode($str)
	{
	    $res = urlencode($str);
	    $res = preg_replace('/\+/', '%20', $res);
	    $res = preg_replace('/\*/', '%2A', $res);
	    $res = preg_replace('/%7E/', '~', $res);
	    return $res;
	}