title: how to send data to server from iphone application
body: <p>I am sending data from iphone application to server using php but data is not inserted in the data base when i post the data in return it just sents the [] in echo.</p>
  
  <p>My iPhone Code</p>
  
  <pre><code>    -(void)submitSurveyAnswers{
  
  
       NSString*survey_question_response_id="1";
       NSString*survey_id=@"1";
       NSString *question_id =@"1";
       NSString *survey_response_answer_id =@"1";
       NSString *post =[[NSString alloc] initWithFormat:@"survey_question_response_id=%@&amp;survey_id=%@&amp;question_id=%@&amp;survey_response_answer_id=%@",survey_question_response_id,survey_id,question_id,survey_response_answer_id];
       NSLog(post);
      NSURL *url=[NSURL URLWithString:@"http://myserver-solutions.com/app/surveyAnswer.php?"];
  
      NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
  
      NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
  
      NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init] ;
      [request setURL:url];
      [request setHTTPMethod:@"POST"];
      [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
      [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
      [request setHTTPBody:postData];
     NSError *error;
     NSURLResponse *response;
     NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&amp;response error:&amp;error];
  
    NSString *data=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
    NSLog(@"%@",data);
    }
  </code></pre>
  
  <p>Here is the my php code</p>
  
  <pre><code>    &lt;?php
      $host = ""; 
      $user = ""; 
      $pass = ""; 
      $database = ""; 
  
      $linkID = mysql_connect($host, $user, $pass) or die("Could not connect to host."); 
  
      mysql_select_db($database, $linkID) or die("Could not find database."); 
  
      $survey_question_response_id=$_POST['survey_question_response_id'];
      $survey_id=$_POST['survey_id'];
      $question_id=$_POST['question_id'];
      $survey_response_answer_id=$_POST['survey_response_answer_id'];
      echo($survey_question_response_id);
  
      $query=("INSERT INTO survey_question_responses 
  </code></pre>
  
  <p>(survey_question_response_id,survey_id,question_id,survey_response_answer_id)</p>
  
  <pre><code>    VALUES ('$survey_question_response_id', '$survey_id','$question_id','$survey_response_answer_id')");
  
       mysql_query($query,$con);
       printf("Records inserted: %d\n", mysql_affected_rows());
       echo($survey_id)
       ?&gt;
  </code></pre>