Question

iPhone code

When I use this code it always show error password but I am entering correct credentials.

    NSString *post =[NSString stringWithFormat:@"UserName=%@&UserPas   sword=%@",userNameTextField.text, userPasswordTextFiled.text];

    NSString *hostStr = @"http://www.celeritas-solutions.com/emrapp/connect.php";
     = [hostStr stringByAppendingString:post];
    NSData *dataURL =  [NSData dataWithContentsOfURL: [ NSURL URLWithString: hostStr ]];    
    NSString *serverOutput = [[NSString alloc] initWithData:dataURL encoding: NSASCIIStringEncoding];
    if([serverOutput isEqualToString:@"Yes"]){
           UIAlertView *alertsuccess = [[UIAlertView alloc] initWithTitle:@"Congrats" message:@"You are authorized "
                                                          delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
       [alertsuccess show];
           [alertsuccess release];


    } else {
            UIAlertView *alertsuccess = [[UIAlertView alloc] initWithTitle:@"Error" message:@"Username or Password Incorrect"
                                                          delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
            [alertsuccess show];
            [alertsuccess release];

    }

I am getting validate username and password from data base but it gives sql syntax error that

   You have an error in your SQL syntax; check the manual that corresponds to your   MySQLserver version for the right syntax to use near 'AND UserPassword=' at line 1

  mysql_select_db("emriphone", $con);


  $u=$_GET['UserName'];
  $pw=$_GET['UserPassword'];

   $check ="SELECT UserName,UserPassword from appUsers WHERE UserName=$u AND UserPassword=$pw";

  $login=mysql_query($check,$con) or die(mysql_error());

  if(mysql_num_rows($login)==1){

  $row =mysql_fetch_assoc($login);
  echo 'YES'; exit;
   }

 else{
   echo'NO';exit;
  }

 mysql_connect($con);

Answer 1

Use single quotes for variables in the query ''

Hope this helps you.