mysql_fetch_assoc() keeps returning false

[warlock]

I am working on this store locate script that is available from Pamela Fox at http://code.google.com/apis/maps/articles/phpsqlsearch.html#wheretogo .  However, I am having some issues when I try to run the script.  Basically, lat, lng, and radius are posted to the script which goes through a MYSQL db and returns in order the stores within the search grid.  The xml file never displays data.  For some reason, the code:

 

$row = mysql_fetch_assoc($result)

 

returns false in the while loop causing the statements within to never execute. 

 

I would appreciate any guidance to what may be the reasoning.

 

Thank you.

 

 

<?php 

require("phpsqlsearch_dbinfo.php");

 

// Get parameters from URL

$center_lat = $_GET["lat"];

$center_lng = $_GET["lng"];

$radius = $_GET["radius"];

 

// Start XML file, create parent node

$dom = new DOMDocument("1.0");

$node = $dom->createElement("markers");

$parnode = $dom->appendChild($node);

 

// Opens a connection to a mySQL server

$connection=mysql_connect ('63.165.0.24:3306', $username, $password);

if (!$connection) {

  die("Not connected : " . mysql_error());

}

 

// Set the active mySQL database

$db_selected = mysql_select_db($database, $connection);

if (!$db_selected) {

  die ("Can\'t use db : " . mysql_error());

}

 

 

 

// Search the rows in the markers table

$query = sprintf("SELECT address, name, lat, lng, ( 3959 * acos( cos( radians('%s') ) * cos( radians( lat ) ) * cos( radians( lng ) - radians('%s') ) + sin( radians('%s') ) * sin( radians( lat ) ) ) ) AS distance FROM markers HAVING distance < '%s' ORDER BY distance LIMIT 0 , 20",

  mysql_real_escape_string($center_lat),

  mysql_real_escape_string($center_lng),

  mysql_real_escape_string($center_lat),

  mysql_real_escape_string($radius));

$result = mysql_query($query);

 

$result = mysql_query($query);

if (!$result) {

  die("Invalid query: " . mysql_error());

}

 

 

 

// Iterate through the rows, adding XML nodes for eac

 

while ($row = mysql_fetch_assoc($result)) {

  $node = $dom->createElement("marker");

  $newnode = $parnode->appendChild($node);

  $newnode->setAttribute("name", $row['name']);

  $newnode->setAttribute("address", $row['address']);

  $newnode->setAttribute("lat", $row['lat']);

  $newnode->setAttribute("lng", $row['lng']);

  $newnode->setAttribute("distance", $row['distance']);

 

}

 

echo $dom->saveXML();

?>