PHP5 google maps example

<?php
$dbname            ='testgooglemaps'; //Name of the database
$dbuser            ='root'; //Username for the db
$dbpass            =''; //Password for the db
$dbserver          ='localhost'; //Name of the mysql server

$dbcnx = mysql_connect ("$dbserver", "$dbuser", "$dbpass");
mysql_select_db("$dbname") or die(mysql_error());
?>
<html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
 <title>Google Map API V3 with markers</title>
 <style type="text/css">
 body { font: normal 10pt Helvetica, Arial; }
 #map { width: 640px; height: 480px; border: 0px; padding: 0px; }
 </style>
 <script src="http://maps.google.com/maps/api/js?v=3&sensor=false" type="text/javascript"></script>
 <script type="text/javascript">
 //Sample code written by August Li
 var blue_icon = new google.maps.MarkerImage("http://maps.google.com/mapfiles/ms/micons/blue.png",
     new google.maps.Size(32, 32), new google.maps.Point(0, 0),
     new google.maps.Point(16, 32)
 );
  var red_icon = new google.maps.MarkerImage("http://maps.google.com/mapfiles/ms/micons/red.png",
     new google.maps.Size(32, 32), new google.maps.Point(0, 0),
     new google.maps.Point(16, 32)
 );
 var center = null;
 var map = null;
 var currentPopup;
 var bounds = new google.maps.LatLngBounds();
 function addMarker(lat, lng, info, complete) {
     var pt = new google.maps.LatLng(lat, lng);
     bounds.extend(pt);
     var marker = null;
     if( complete == 0 ){
          marker = new google.maps.Marker({
             position: pt,
             icon: blue_icon,
             map: map
         });
    }
    else{
        marker = new google.maps.Marker({
             position: pt,
             icon: red_icon,
             map: map
         });
    }
     var popup = new google.maps.InfoWindow({
         content: info,
         maxWidth: 300
     });
    google.maps.event.addListener(marker, "click", function() {
         if (currentPopup != null) {
             currentPopup.close();
             currentPopup = null;
         }
         popup.open(map, marker);
         currentPopup = popup;
    });
     google.maps.event.addListener(popup, "closeclick", function() {
     map.panTo(center);
     currentPopup = null;
     });
}
 function initMap() {
     map = new google.maps.Map(document.getElementById("map"), {
         center: new google.maps.LatLng(0, 0),
         zoom: 14,
         mapTypeId: google.maps.MapTypeId.ROADMAP,
         mapTypeControl: false,
         mapTypeControlOptions: {
            style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR
         },
         navigationControl: true,
         navigationControlOptions: {
            style: google.maps.NavigationControlStyle.SMALL
        }
    });
     <?php
     $query = mysql_query("SELECT * FROM poi_example");
     while ($row = mysql_fetch_array($query)){
         $name=$row['name'];
         $lat=$row['lat'];
         $lon=$row['lon'];
         $desc=$row['desc'];
         $complete = $row['complete'];
         echo ("addMarker($lat, $lon,'<b>$name</b><br/>$desc', $complete );\n");
     }
     ?>
     center = bounds.getCenter();
     map.fitBounds(bounds);

 }
 </script>
 </head>
 <body onload="initMap()" style="margin:0px; border:0px; padding:0px;">
 <div id="map"></div>
 </html>