<?PHP  
$flag = 0; 
        //要post的数据 
$argv = array( 
                 'sn'=>'SDK-BBX-010-XXXXX', 
   'pwd'=>'XXXXXX', 
   'mobile'=>'15201692834', 
                 'content'=>'你好吗,测试短信' 
   );    
//构造要post的字符串 
foreach ($argv as $key=>$value) { 
          if ($flag!=0) { 
                         $params .= "&"; 
                         $flag = 1; 
          } 
         $params.= $key."="; $params.= urlencode($value); 
         $flag = 1; 
          } 
         $length = strlen($params); 
                 //创建socket连接 
         $fp = fsockopen("sdk2.entinfo.cn",80,$errno,$errstr,10) or exit($errstr."--->".$errno); 
         //构造post请求的头 
         $header = "POST /z_send.aspx HTTP/1.1\r\n"; 
         $header .= "Host:sdk2.entinfo.cn\r\n"; 
         $header .= "Referer:/mobile/sendpost.php\r\n"; 
         $header .= "Content-Type: application/x-www-form-urlencoded\r\n"; 
         $header .= "Content-Length: ".$length."\r\n"; 
         $header .= "Connection: Close\r\n\r\n"; 
         //添加post的字符串 
         $header .= $params."\r\n"; 
         //发送post的数据 
         fputs($fp,$header); 
         $inheader = 1; 
          while (!feof($fp)) { 
                         $line = fgets($fp,1024); //去除请求包的头只显示页面的返回数据 
                         if ($inheader && ($line == "\n" || $line == "\r\n")) { 
                                 $inheader = 0; 
                          } 
                          if ($inheader == 0) { 
                                // echo $line; 
                          } 
          } 
        if($line==1) 
         { 
       echo '短信发送成功 请查收 返回值'.$line ;  
         }else 
         { 
          echo '短信发送失败,请根据返回值查看相关错误问题 返回值'.$line ;