php - Filter Google Maps map with a dropdown menu -

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i have google maps map generated database table. filter marker of 2 selections: regione , provincia, made in ajax.

my page:

<head>     <script type="text/javascript" src="jquery-1.3.2.js"></script> <script type="text/javascript"> jquery(document).ready(function() {  jquery('#sel_regione').change(function(){                var cont = jquery('#sel_regione').attr('value');             jquery.post("selection.php", {regione_id:cont}, function(data){             jquery("#sel_provincia").empty();             jquery("div#result").empty();             jquery("#sel_provincia").prepend(data);             });             });  jquery('#sel_provincia').change(function(){              var id_naz = jquery('#sel_provincia').attr('value');              jquery.post("result.php", {provincia_id:id_naz}, function(data){             jquery("div#result").empty();             jquery("div#result").prepend(data);             });             });  }); </script> <?php $db = mysql_connect("miodb","user","pass");      mysql_select_db("dbname", $db); ?>      <script src="http://maps.google.com/maps?file=api&amp;v=2&amp;key=apikey" type="text/javascript"></script> <script type="text/javascript">  var miomarker = new google.maps.marker({                      map: map,                     icon: miologo,                     title:"miotitle"             });      function createmarker(point,html) {          var marker = new gmarker(point);        gevent.addlistener(marker,"click",function(){ top.location = "#" });         return marker;       }           function initialize() {         if (gbrowseriscompatible()) {         var map = new gmap2(document.getelementbyid("map_canvas"),{ size: new gsize(580,400) } );         map.removemaptype(g_hybrid_map);         map.setcenter(new glatlng(43.036776,12.45758,0), 1);                 map.setzoom(5);         var mapcontrol = new gmaptypecontrol();         map.addcontrol(mapcontrol);         map.addcontrol(new glargemapcontrol());      <?  $exe1="select lat,lng mytable";      $result1 = mysql_query($exe1, $db)or die(mysql_error());        while(list($lat,$long) = mysql_fetch_row($result1)){               echo "\n var point = new glatlng(".$lat.",".$long.");\n";             echo "var marker = createmarker(point,'');\n";             echo "map.addoverlay(marker);\n";             echo "\n";     } ?>   }     }      </script> </head> <body onload="initialize()" onunload="gunload()"> <div id="regione"> <?php include_once 'option.class.php'; $obj = new option(); $obj->showregione(); ?> </div>  <div id="provincia"> seleziona una provincia:<br> <select id="sel_provincia" name="sel_provincia"><option value="no">scegli...</option> </select> </div>  <div id="result">   </div>          <div id="map_canvas" style="width: 580px; height: 300px"></div>  </body>

option.class.php

<?php class option {     public $conn;          public function __construct()         {             $this->dbconnectandselect();         }          protected function dbconnectandselect()         {             include_once "db_config.php";             $this->conn = mysql_connect($db_host,$username,$password);             mysql_select_db($db_name, $this->conn);             return true;         }          public function showregione()         {             echo 'seleziona una regione:<br>';             echo '<select id="sel_regione" name="sel_regione"><option value="no">scegli...</option>';              $sql = "select * table_regione";             $res = mysql_query($sql,$this->conn);                  while($row = mysql_fetch_array($res))                 {                     echo '<option value="' . $row['regione_id'] . '">' . $row['nome'] . '</option>';                 }              echo '</select>';         }          public function showprovincia()         {             if($_post['regione_id'] == "no")             {                 die;             }               $sql = "select * table_provincia regione_id=$_post[regione_id]";             $res = mysql_query($sql,$this->conn);                 echo'<option value="no">scegli...</option>';                 while($row = mysql_fetch_array($res))                 {                     echo '<option value="' . $row['provincia_id'] . '">' . $row['nome'] . '</option>';                 }           }          public function showresult()         {                         $query = "select * miatable provincia_id=$_post[provincia_id]";                         $risultati=mysql_query($query);                         $num=mysql_numrows($risultati);                         if ($num == 0)                          {                             echo "<br><br> no records found";                          }             else                         {             echo '<br><br>trovati seguenti record: <br> ';                         $i=0;                         while ($i < $num) {                           $denominazione=mysql_result($risultati,$i,"denominazione");                          $indirizzo=mysql_result($risultati,$i,"indirizzo");       echo "<b>$denominazione</b><br>$indirizzo<br><br>";       $i++;                          }                         }         } }  ?>

file result.php

<?php include_once 'option.class.php'; $obj = new option(); $obj->showresult(); ?>

file selection.php

<?php include_once 'option.class.php'; $obj = new option(); $obj->showprovincia(); ?>

how this? appreciated!


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