php - data not save to mySQL Hosted DB -

i want save data android app mysql database in server. make code php.. when run php file data saved db.. run form android application. data not save db.

save code in android

 public void loadsave() {               string mydataurl = "http://xxxxxxxxxx/savedata.php";           //string type = params[0];          try {          string longi = "aaa"; // double.tostring(location.getlongitude());         string lati = "aare";//double.tostring(location.getlatitude());         string user = "a";         string lisence = "b";         string date = "c";         url url = new url(mydataurl);         httpurlconnection httpurlconnection = (httpurlconnection) url.openconnection();         httpurlconnection.setrequestmethod("post");         httpurlconnection.setdooutput(true);         httpurlconnection.setdoinput(true);         outputstream outputstream = httpurlconnection.getoutputstream();         bufferedwriter bufferedwriter = new bufferedwriter(new outputstreamwriter(outputstream, "utf-8"));         string post_data = urlencoder.encode("longi", "utf-8") + "=" + urlencoder.encode(longi, "utf-8") + "&" +                 urlencoder.encode("lati", "utf-8") + "=" + urlencoder.encode(lati, "utf-8") + "&" +                 urlencoder.encode("user", "utf-8") + "=" + urlencoder.encode(user, "utf-8") + "&" +                 urlencoder.encode("lisence", "utf-8") + "=" + urlencoder.encode(lisence, "utf-8") + "&" +                 urlencoder.encode("date", "utf-8") + "=" + urlencoder.encode(date, "utf-8");         bufferedwriter.write(mydataurl);         bufferedwriter.flush();         bufferedwriter.close();         outputstream.close();                 } catch (malformedinputexception e) {         e.printstacktrace();     } catch (ioexception ex) {         ex.printstacktrace();     }  } 

php code

require "db_connection.php";  $longi =$_post["longi"]; $lati = $_post["lati"]; $user = $_post["user"]; $lisence =$_post["lisence"]; $date = $_post["date"];  $query1="insert mapdata (longi,lati,user,lisence,date)    values ('".$longi."','".$lati."','".$user."','".$lisence."', '".$date."' )";  mysql_query($query1) or die ('error :' . mysql_error()); 

calling loadsave()

    new asynctask<void, void, void>() {          @override         protected void doinbackground(final void... params) {             loadsave();             return null;         }     }.execute();