Google Maps API v3: so stellen Sie die Zoom-Level Und Map-Center Eingereichten Standort?

Habe ich dieses tutorial verwendet von Google, um eine Webseite aufzubauen, die app findet den nächstgelegenen Filiale von dem Benutzer eingegebenen Ort:

http://code.google.com/apis/maps/articles/phpsqlsearch_v3.html

Habe ich meine app fast so zu arbeiten, wie ich es will, auf die Seite laden, die Karte wird geladen, zentriert und eingestellt werden, um zoom-Stufe 6 und der Benutzer füllt das Formular mit Ihrer Lage.

Die app holt sich dann den ganzen Speicher Infos aus der db und füllt die Karte mit einer Markierung für jede.

Das zoom-Niveau scheint zu sinken aswell, aber ich kann nicht finden, diese in den code, überall.

Was ich eigentlich tun möchten, auf "Absenden" ist zoom-in zoom-level 6 und zentrieren Sie die Karte, um die Breite und Länge des vom Benutzer eingegebenen Position und Ausgabe info über die nächstgelegene Geschäfte, e.g die nächsten 5. Ich Frage mich, wenn jemand hier wüsste, wie dieses feature zu implementieren?

index.php

<div>
    <input type="text" id="addressInput" size="50"/>
    <input type="hidden" id="radiusSelect" value="5"/>
    <input type="button" onclick="searchLocations()" value="Search"/>
</div>
<div><select id="locationSelect" style="width:100%;visibility:hidden"></select></div>
<div id="map" style="width:100%; height:50%"></div>



<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script src="http://maps.google.com/maps/api/js?sensor=false" type="text/javascript"></script>
<script type="text/javascript">
//<![CDATA[
var map;
var markers = [];
var infoWindow;
var locationSelect;

function load() {
  map = new google.maps.Map(document.getElementById("map"), {
    center: new google.maps.LatLng(54.600939134593, -2.399894114594),
    zoom: 6,
    mapTypeId: 'roadmap',
    mapTypeControlOptions: {style: google.maps.MapTypeControlStyle.DROPDOWN_MENU}
  });
  infoWindow = new google.maps.InfoWindow();

  locationSelect = document.getElementById("locationSelect");
  locationSelect.onchange = function() {
    var markerNum = locationSelect.options[locationSelect.selectedIndex].value;
    if (markerNum != "none"){
      google.maps.event.trigger(markers[markerNum], 'click');
    }
  };
}

function searchLocations() {
 var address = document.getElementById("addressInput").value;
 var geocoder = new google.maps.Geocoder();
 geocoder.geocode({address: address}, function(results, status) {
   if (status == google.maps.GeocoderStatus.OK) {
    searchLocationsNear(results[0].geometry.location);
   } else {
     alert(address + ' not found');
   }
 });
}

function clearLocations() {
 infoWindow.close();
 for (var i = 0; i < markers.length; i++) {
   markers[i].setMap(null);
 }
 markers.length = 0;

 locationSelect.innerHTML = "";
 var option = document.createElement("option");
 option.value = "none";
 option.innerHTML = "See all results:";
 locationSelect.appendChild(option);
}

function searchLocationsNear(center) {
 clearLocations(); 

 var radius = document.getElementById('radiusSelect').value;
 var searchUrl = 'phpsqlsearch_genxml.php?lat=' + center.lat() + '&lng=' + center.lng() + '&radius=' + radius;
 downloadUrl(searchUrl, function(data) {
   var xml = parseXml(data);
   var markerNodes = xml.documentElement.getElementsByTagName("marker");
   var bounds = new google.maps.LatLngBounds();
   for (var i = 0; i < markerNodes.length; i++) {
     var town = markerNodes[i].getAttribute("town");
     var postcode = markerNodes[i].getAttribute("postcode");
     var name = markerNodes[i].getAttribute("name");
     var address = markerNodes[i].getAttribute("address");
     var distance = parseFloat(markerNodes[i].getAttribute("distance"));
     var latlng = new google.maps.LatLng(
          parseFloat(markerNodes[i].getAttribute("lat")),
          parseFloat(markerNodes[i].getAttribute("lng")));

    var id = markerNodes[i].getAttribute("id");
    var fname = markerNodes[i].getAttribute("fname");
    var link = '<a href="http://www.domain.co.uk/stores/' + fname + '-' + id + '.html" target="_blank" title="Store: ' + town + '">More info</a>';

     createOption(name, distance, i);
     createMarker(latlng, name, address, town, postcode, link);
     bounds.extend(latlng);
   }
   map.fitBounds(bounds);
   locationSelect.style.visibility = "visible";
   locationSelect.onchange = function() {
     var markerNum = locationSelect.options[locationSelect.selectedIndex].value;
     google.maps.event.trigger(markers[markerNum], 'click');
   };
  });
 }

 function createMarker(latlng, name, address, town, postcode, link) {
  var html = "<b>" + town + "</b> <br/>" + address + "<br/>" + postcode + "<br/>" + link;
  var marker = new google.maps.Marker({
    map: map,
    position: latlng
  });
  google.maps.event.addListener(marker, 'click', function() {
    infoWindow.setContent(html);
    infoWindow.open(map, marker);
  });
  markers.push(marker);
}

 function createOption(name, distance, num) {
  var option = document.createElement("option");
  option.value = num;
  option.innerHTML = name + "(" + distance.toFixed(1) + ")";
  locationSelect.appendChild(option);
 }

 function downloadUrl(url, callback) {
  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);
 }

 function parseXml(str) {
  if (window.ActiveXObject) {
    var doc = new ActiveXObject('Microsoft.XMLDOM');
    doc.loadXML(str);
    return doc;
  } else if (window.DOMParser) {
    return (new DOMParser).parseFromString(str, 'text/xml');
  }
 }

 function doNothing() {}

//]]>
</script>


<script type="text/javascript">
    $(document).ready(function() {
        load();
    });
</script>

phpsqlsearch_genxml.php

<?php
$db_conn = mysql_connect('xxx.xxx.xx.xx', 'xxxxxxxx', 'xxxxxx') or die('error');
mysql_select_db('uk_db', $db_conn) or die(mysql_error());

//Get parameters from URL
$center_lat = $_GET["lat"];
$center_lng = $_GET["lng"];
$radius = $_GET["radius"];

if(!$_GET['zoom']) { 
    $_GET['zoom'] = 11; 
}

//Start XML file, create parent node
$dom = new DOMDocument("1.0");
$node = $dom->createElement("markers");
$parnode = $dom->appendChild($node);


//Select all the rows in the markers table
$query = 'SELECT address1, address2, address3, longitude, latitude, name, town, store_id, postcode, storenumber 
          FROM uk_store
          WHERE isActive=1 ';
if($_GET["region"] != '') {
    $query .= ' AND region = "' . $_GET["region"] . '"';
} else {
    $query .= ' AND region in("Scotland", "England", "Wales", "Northern Ireland") ';
}

//lets start to check what has been search on
if($_GET['postcode'] != '') {

  //lets make sure postcode only has numbers letter and spaces
  $searchparams .= 'postcode=' . $_GET['postcode'] . '&amp;';
  $postcode = $_GET['postcode'];
  $postcode = verifyInput($postcode);
  $query .= " AND postcode = '" . $postcode . "'";

}

if($_GET['town'] != '') {
    //make sure town only has letters or spaces.
    $searchparams .= 'town=' . $_GET['town'] . '&amp;';
    $town = $_GET['town']; 
    $town = verifyInput($town);
    $query .= " AND town = '" . $town . "'";
}

if($_GET['min_lat'] && $_GET['min_long'] && $_GET['max_lat'] && $_GET['max_long'] ) {
   $query .=   " AND latitude BETWEEN " . $_GET['min_lat'] . " AND " . $_GET['max_lat'] . " AND longitude BETWEEN " . $_GET['min_long'] . " AND " . $_GET['max_long'] ;
   $mapsearch = 1;
}

if(!($_GET['postcodeLat'] && $_GET['postcodeLong'])) {
    $query .= " ORDER BY Region, Town , Name "; 
}

$result = mysql_query($query);
if (!$result) {
  die("Invalid query: " . mysql_error());
}

header("Content-type: text/xml");

echo '<markers>';

if($_GET['postcodeLat'] && $_GET['postcodeLong'])
{
    $count = 0;

   //we need to sort the results by distance
    while ($row = @mysql_fetch_array($result, MYSQL_ASSOC))
    {
        $address = $row['address1'] . ' ' . $row['address2'] . ' ' . $row['address3'];
        $distance = distance($_GET['postcodeLat'], $_GET['postcodeLong'], $row['latitude'], $row['longitude']); 
        $row['distance'] = number_format($distance, 2);
        $row['fname'] = $row['town'] . '-' . $row['name'];
        $row['fname'] = str_replace("'",'', $row['fname']);
        $row['fname'] = ereg_replace(' ','-', $row['fname']); 
        $row['fname'] = ereg_replace('\/','-', $row['fname']);
        $row['fname'] = ereg_replace('\(','', $row['fname']);
        $row['fname'] = ereg_replace('\)','', $row['fname']);
        $row['fname'] = strtolower($row['fname']);
        //get distance and add to $row array
        $results[$distance.$row['id']] = $row;        
    } 

    ksort($results);

    foreach ($results as $key => $row) 
    {
      //ADD TO XML DOCUMENT NODE 
        $address = $row['address1'] . ' ' . $row['address2'] . ' ' . $row['address3'];  
        echo '<marker ';  
        echo 'name="' . parseToXML($row['name']) . '" ';  
        echo 'fname="' . parseToXML($row['fname']) . '" '; 
        echo 'town="' . parseToXML($row['town']) . '" ';  
        echo 'lat="' . $row['latitude'] . '" ';  
        echo 'lng="' . $row['longitude'] . '" ';  
        echo 'id="' . $row['store_id'] . '" ';  
        echo 'address="' . $address . '" '; 
        echo 'distance="' . $row['distance'] . '" '; 
        echo 'postcode="' . $row['postcode'] . '" ';
        echo 'storenumber="' . $row['storenumber'] . '" ';
        echo 'address1="' . parsetoXml($row['address1']). '" '; 
        echo 'address2="' . parsetoXml($row['address2']). '" '; 
        echo 'address3="' . parsetoXml($row['address3']). '" ';
        echo '/>';
    }

}
else
{
    //Iterate through the rows, printing XML nodes for each
    while ($row = @mysql_fetch_assoc($result))
    {
         $address = $row['address1'] . ' ' . $row['address2'] . ' ' . $row['address3'];
         $row['fname'] = $row['town'] . '-' . $row['name'];
         $row['fname'] = ereg_replace(' ','-', $row['fname']); 
         $row['fname'] = ereg_replace('\/','-', $row['fname']);
         $row['fname'] = ereg_replace('\(','', $row['fname']);
         $row['fname'] = ereg_replace('\)','', $row['fname']);

        //ADD TO XML DOCUMENT NODE  
        echo '<marker ';  
        echo 'name="' . parseToXML($row['name']) . '" ';
        echo 'fname="' . strtolower(parseToXML($row['fname'])) . '" '; 
        echo 'town="' . parseToXML($row['town']) . '" ';  
        echo 'lat="' . $row['latitude'] . '" ';  
        echo 'lng="' . $row['longitude'] . '" ';  
        echo 'id="' . $row['store_id'] . '" ';  
        echo 'isSurg="' . $row['isLaserSurgery'] . '" '; 
        echo 'isCons="' . $row['isLaserConsult'] . '" '; 
        echo 'address="' . parsetoXml($address). '" '; 
        echo 'address1="' . parsetoXml($row['address1']). '" '; 
        echo 'address2="' . parsetoXml($row['address2']). '" '; 
        echo 'address3="' . parsetoXml($row['address3']). '" '; 
        echo 'postcode="' . $row['postcode'] . '" '; 
        echo 'storenumber="' . $row['storenumber'] . '" ';
        echo '/>';
    }
}
//End XML file
echo '</markers>';


//make sure the data is xml friendly
function parseToXML($htmlStr) 
{ 
    $xmlStr=str_replace('<','&lt;',$htmlStr); 
    $xmlStr=str_replace('>','&gt;',$xmlStr); 
    $xmlStr=str_replace('"','&quot;',$xmlStr); 
    //$xmlStr=str_replace("'",'&#39;',$xmlStr); 
    $xmlStr=str_replace("&",'&amp;',$xmlStr); 
    return $xmlStr; 
}

//calculate the distance in miles or kms between any two points 
function distance($lat1, $lon1, $lat2, $lon2, $unit = '') { 
    $theta = $lon1 - $lon2; 
    $dist = sin(deg2rad($lat1)) * sin(deg2rad($lat2)) +  cos(deg2rad($lat1)) * cos(deg2rad($lat2)) * cos(deg2rad($theta)); 
    $dist = acos($dist); 
    $dist = rad2deg($dist); 
    $miles = $dist * 60 * 1.1515;
    if($unit != '')
    {
        $unit = strtoupper($unit);
    }

if ($unit == "K") {
    return ($miles * 1.609344); 
} else if ($unit == "N") {
  return ($miles * 0.8684);
} else {
    return $miles;
  }
} 

function VerifyInput ($input, $forceInt = false) { 

if (is_numeric($input)) { 
    return $input; 
} elseif (!$forceInt) { 

    if (get_magic_quotes_gpc() && trim(ini_get("magic_quotes_sybase")) == "") { 
        $input = stripslashes($input); 
        $input = str_replace("'", "", $input); 
        $input = str_replace("`", "", $input);
    } elseif (!get_magic_quotes_gpc()) { 
        $input = str_replace("'", "", $input);
        $input = str_replace("`", "", $input); 
    } 
    return $input; 
} elseif ($forceInt) { 
    return 0; 
} 
} 

?>

Entschuldigung, das ist eine Menge von dort einfügen, aber ich dachte, es besser, alles eher als das Risiko einzugehen, jemand, der nicht in der Lage zu beantworten, denn es gibt nicht genug detail.

UPDATE

Ich habe versucht, das einfügen dieses Stück code in die searchLocations - Funktion, aber es scheint nicht die jeweiligen Ressourcen in das Verhalten in eh:

function searchLocations() {
 var address = document.getElementById("addressInput").value;
 var geocoder = new google.maps.Geocoder();
 geocoder.geocode({address: address}, function(results, status) {
   if (status == google.maps.GeocoderStatus.OK) {
    searchLocationsNear(results[0].geometry.location);
    ///////////////new code
    var myOptions = {
    zoom: 11,
    center: address.geometry.location,
    mapTypeId: google.maps.MapTypeId.TERRAIN
    }
    map = new google.maps.Map(document.getElementById("map"), myOptions);
    ////////////////

   } else {
     alert(address + ' not found');
   }
 });
}