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PHP Error: mysql_fetch_array() expects parameter 1 to be resource, boolean given

I am coding an php and mysql program to add and retrieve facebook app id and secret in database.But I get the following error.My link is http://freegiveaway.info/new/manageApp.php .btw my database is connected successfully.

Warning: mysql_fetch_assoc() expects parameter 1 to be resource, 
boolean given in /home/free/public_html/new/manageApp.php 

My php contains follwing code

$flag = $_POST['flag'];
        $key = $_POST['key'];
        $secret = $_POST['secret'];
        $deleteApp=$_POST['deleteApp'];
        $appN=$_POST['appN'];
    $db = mysql_connect("localhost", "free_1", "password");
    mysql_select_db("facefunv_chuck", $db);    
    $app = mysql_query("SELECT * FROM tsp ORDER BY n",$db);
        while ($apps = mysql_fetch_assoc($app)){

I get error on line while ($apps = mysql_fetch_assoc($app)){

And my sql file is below

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;

--
-- Database: `facefunv_chuck`
--

-- --------------------------------------------------------

--
-- Table structure for table `tsp`
--

CREATE TABLE IF NOT EXISTS `tsp` (
  `n` int(11) NOT NULL AUTO_INCREMENT,
  `id` text NOT NULL,
  `secret` text NOT NULL,
  `restricted` int(11) NOT NULL,
  `banned` int(11) NOT NULL,
  PRIMARY KEY (`n`)
) ENGINE=MyISAM  DEFAULT CHARSET=latin1 AUTO_INCREMENT=40 ;

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

Answer 1

You’re changing the db name to “auto” with the mysql_select_db. I’d guess there is no database named auto with a table tsp. Hence the result $app is null and you can’t call fetch on a null.