功能属性/功能准备错误？

Question

我的网站上有一张地图，允许用户添加标记和信息。点击并保存大约需要30到40秒，我收到此消息：

 Data Loaded: error :SQLSTATE[HY000] [2003] Can't connect to MySQL server on '41.185.13.51' (110)<br />
<b>Fatal error</b>:  Call to a member function prepare() on a non-object in <b>/home/sea503/public_html/phpsqlinfo_addrow.php</b> on line <b>19</b><br /> 

请有人帮我看看这个，我的编码看起来很

<?php
require("dbinfo.php");// database connections
// Get parameters from URL
$lat = $_GET["lat"];
$lng = $_GET["lng"];
$name = $_GET["name"];
$time = $_GET["time"];
$description = $_GET["description"];
$sighting = $_GET["sighting"];
//Connect to database
try {
        $dbh = new PDO("mysql:host=$host;port=$port;dbname=$database",$username,$password);
        $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);}     
        catch (PDOException $e) {
        echo 'error :' .$e->getMessage();
}
        try {
    // Prepare INSERT statement new sigting
        $stmt3 = $dbh->prepare("INSERT INTO tbl_maps (ID, map_client_name, client_time, client_lat, client_lng, client_description,         client_sighting)  VALUES (NULL, ?, ?, ?, ?, ?, ?)");

        // Assign parameters
        $stmt3->bindParam(1,$name);
        $stmt3->bindParam(2,$time);
        $stmt3->bindParam(3,$lat);
        $stmt3->bindParam(4,$lng);
        $stmt3->bindParam(5,$description);
        $stmt3->bindParam(6,$sighting);
        $stmt3->execute();
        $data[] = array("name"=>$name, "lat"=>round($lat,6), "lng"=>round($lng,6),"time"=>$time,"description"=>$description,"sighting"=>$sighting);
        //Data for success
        echo json_encode($data);
}
catch(PDOException $e) {
    echo "Error Message.". $e->getMessage() ;// Remove or modify after testing 
    file_put_contents('PDOErrors.txt',date('[Y-m-d H:i:s]').", phpsqlinfo_addrow.php, ". $e->getMessage()."\r\n", FILE_APPEND);  
}
//Close the connection
$dbh = null; 
?>

DBINFO：

<?php
$host= '41.185.13.51'; $port= '3307'; $database="kruger_park_live"; $username="sean_sql"; $password="**********";

?>

和HTML

"//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> 
    <script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
    <script type="text/javascript">
    var marker;
    var infowindow;

    function initialize() {
      var latlng = new google.maps.LatLng(-24.532226,31.290586);
      var options = {
        zoom: 8,
        center: latlng,
        mapTypeId: google.maps.MapTypeId.ROADMAP
      }
      var map = new google.maps.Map(document.getElementById("map-canvas"), options);
      var html = "<table>" +
                 "<tr><td>Posted by:</td> <td><input type='text' id='name'/> </td> </tr>" +
                 "<tr><td>Time +/-:</td> <td><input type='text' id='time'/></td> </tr>" +
                 "<tr><td>Sighting:</td> <td><select id='sighting'>" +
                 "<option value='Lion' SELECTED>Lion</option>" +
                 "<option value='Rhino'>Rhino</option>" +
                 "<option value='Elephant'>Elephant</option>" +
                 "<option value='Buffalo'>Buffalo</option>" +
                 "<option value='Leopard'>Leopard</option>" +
                 "<option value='Cheetah'>Cheetah</option>" +
                 "<option value='Spotted Hyena'>Spotted Hyena</option>" +
                 "<option value='Wild Dogs'>Wild Dogs</option>" +
                 "<option value='Hippo'>Hippo</option>" +
                 "<option value='Kudu'>Kudu</option>" +
                 "<option value='Zebra'>Zebra</option>" +
                 "<option value='Fish Eagle'>Fish Eagle</option>" +
                 "<option value='Other'>Other</option>" +
                 "</select> </td></tr>" +
                 "<tr><td>Description:</td> <td><input type='text' id='description'/> </td> </tr>" +
                 "<tr><td></td><td><input type='button' value='Save & Close' onclick='saveData()'/></td></tr>";


    infowindow = new google.maps.InfoWindow({
     content: html
    });

    google.maps.event.addListener(map, "click", function(event) {
        marker = new google.maps.Marker({
          position: event.latLng,
          map: map
        });
        google.maps.event.addListener(marker, "click", function() {
          infowindow.open(map, marker);
        });
    });
    }

    function saveData() {
     var latlng = marker.getPosition();
     var name = escape(document.getElementById("name").value);
     var time = escape(document.getElementById("time").value);
     var sighting = escape(document.getElementById("sighting").value);
     var description = escape(document.getElementById("description").value);
     $.get('phpsqlinfo_addrow.php',{lat:latlng.lat(),lng:latlng.lng(),name:name,time:time,sighting:sighting,description:description})
     .done(function(data){  
      alert("Data Loaded: " + data);
     });    
    }   

    {

      var request = window.ActiveXObject ?
          new ActiveXObject('Microsoft.XMLHTTP') :
          new XMLHttpRequest;

      request.onreadystatechange = function() {
        if (request.readyState == 4) {
          request.onreadystatechange = doNothing;
          callback(request.responseText, request.status);
        }
      };

      request.open('GET', url, true);
      request.send(null);
    }

    </script>

我真的很感激这方面的任何帮助