Question

The current code retrieves all info, displays all markers on a map and if a marker is clicked, infowindow renders showing its content. What i want to do is that i want to implement directions in this. How can i add directions in my code so that it will also add directions? This is what i want to implement:

what to implement :

var request = {
  origin: start,//it will be my first row(lat and lon)
  destination: end,//it will be my lastrow(lat and lon)
  waypoints: waypts, // it will be all lat and lon between first and last
  optimizeWaypoints: true,
  travelMode: google.maps.TravelMode.DRIVING
 };

 directionsService.route(request, function(response, status){
if (status == google.maps.DirectionsStatus.OK){
    directionsDisplay.setDirections(response);
}
 });

My current code in which i want to implement the above functionality mean google maps directions:

already implemented :

$("#directions").click(function(){
    var lat_from_ip   = $("#hidden_lat").val();
    var lon_from_ip   = $("#hidden_lon").val();

    var latlng = new google.maps.LatLng(lat_from_ip, lon_from_ip);
    var options = {zoom: 4, center: latlng, mapTypeId: google.maps.MapTypeId.ROADMAP};
    var map = new google.maps.Map(document.getElementById('map'), options);

    $.ajax({type: "GET",
    dataType: 'json',
    url: url +'//abc/my_page.php',
    success: function(response){
         var total=response.length;
         var data_array,name,type,address,lat,lon,infowindow;
         var infowindow = new google.maps.InfoWindow();  

       for(var i=0; i < total; i++) 
       {
            data_array=response[i];
            name=data_array['name'];
            address=data_array['address'];
            notes=data_array['notes'];
            lat=data_array['lat'];
            lon=data_array['lon'];

        var propPos = new google.maps.LatLng(lat,lon);

            propMarker = new google.maps.Marker({
                    position: propPos,
                    map: map,
                    icon: icon,
                    zIndex: 3});

var contentString = "<div>"+name+"<br/><label class='label'>Location :</label> "+address+"<br/><label class='label'>Notes :</label> "+notes + "</div>"; 

              function bindInfoWindow(marker, map, infowindow, html) {
         google.maps.event.addListener(marker, 'click', function() {
               infowindow.setContent(html);
               infowindow.open(map, marker);
                });
                 }

             bindInfoWindow(propMarker, map, infowindow, contentString);

     }   //end of for loop
          } //end of for success
    }); //end of for $.ajax
    return;


    });

Answer 1

This is how to convert your php array to js array

for instance you have php array

<?php
$my_array = array("a","b","c");
 ?>

now in js do so

<script>
var jsArray = ["<?php echo join("\", \"", $my_array); ?>"];
alert(jsArray);

and in your domain its like this.
lets say you have php array like this.
$data ;//this is your php array

Array
(
[0] => Array
    (
        [lat] => 31.453795
        [lon] => 74.388497
    )

[1] => Array
    (
        [lat] => 31.454387
        [lon] => 74.388541
    )

[2] => Array
    (
        [lat] => 31.453795
        [lon] => 74.388497
    )
   .
   .
   .
 )

in js do so

var waypts = [];
<?php
 foreach($data as  $key => $value){
if(($key == '0') || ($key == count($data)-1)){
    continue;
    }?>
 waypts.push({location:  new google.maps.LatLng(<?php echo $data[$key]['lat'] ?>, <?php echo $data[$key]['lon'] ?>)});
<?php }?>