PHP implements SMS text message sending

<?php
 
class Sms
{
  private $userId = &#39;XXXXX&#39;;
 
  private $password = &#39;XXXXXX&#39;;
 
  private $templateId = &#39;XXXXXX&#39;;
 
  /**
   * @var string 短信服务器地址
   */
  private $server_uri = &#39;XXXXXX&#39;;
 
  private $port = &#39;XXXXXX&#39;;
 
 
  /**
   * 发送短信
   * @param $message 信息内容
   * @param $mobile 手机号码
   * @param string $signature 签名
   * @return bool 成功返回true, 网络请求失败返回false, 其他返回失败编码
   */
  public function sendOneMsg($message, $mobile, $signature=&#39;demo&#39;)
  {
 
    $xml_content = $this->createXmlContent($message, $mobile, $signature);
 
    $xml = $this->sendHttpRequest(trim($xml_content));
 
 
    if(! $xml) {
      return false; // 网络请求失败
    }
 
    // 解析返回的编码
    $res = simplexml_load_string($xml);
    if($res->retCode == 1000) {
      return true;
    }
 
    return $res->retCode;
 
  }
 
  /**
   * 创建 xml内容
   * @param $message 信息
   * @param $mobile 要发送的手机号码
   * @param $signature 签名
   * @return string
   */
  private function createXmlContent($message, $mobile, $signature)
  {
    $data = array(
      &#39;userId&#39; => $this->userId, // 账号
      &#39;password&#39; => $this->password, // 小写的md5后的用户密码
      &#39;templateId&#39; => $this->templateId, // 模板id
      &#39;phone&#39; => $mobile,
      &#39;port&#39; => $this->port,
      &#39;data&#39; => $message,
      &#39;signature&#39; => $signature,
    );
 
    // 设置xml版本和编码
    $dom = new \DOMDocument(&#39;1.0&#39;, &#39;UTF-8&#39;);
 
    // 创建根节点
    $request = $dom->createElement(&#39;request&#39;);
    $dom->appendChild($request);
 
    foreach($data as $key => $val) {
      // 创建元素
      $key = $dom->createElement($key);
      $request->appendChild($key);
 
      // 创建元素值
      $text = $dom->createTextNode($val);
      $key->appendChild($text);
    }
 
    return $dom->saveXML();
  }
 
  /**
   * 发送http请求
   * @param $xml_content
   * @return mixed
   */
  private function sendHttpRequest($xml_content)
  {
    $now = time();
    $headers[] = &#39;Content-Type:text/xml&#39;;
    $headers[] = &#39;Content-Length:&#39; . strlen($xml_content);
    $headers[] = &#39;Cmd:mt&#39;;
    $headers[] = &#39;TS:&#39;. $now;
    $headers[] = &#39;Authorization:&#39; . strtoupper(md5($xml_content. $now . $this->password));
 
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $this->server_uri);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $xml_content);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    $res = curl_exec($ch);
    curl_close($ch);
    //header(&#39;Content-Type:text/html; charset=utf-8&#39;);
    return $res;
  }
 
}