Get access the JavaScript loop value in php

Question

Here is my code:

var marker,i,marker1,k;
for(i=0; i <20; i++)
{
//I want to assign this i variable value in php variable
function addMarker(latLng, map) {
    var marker = new google.maps.Marker({
        position: latLng,
        map: map,
        animation:google.maps.Animation.BOUNCE
    });
 //like as
    var conte='<?php $j="<script>document.write(i);</script>"; 
    ?>';

I want to use that value below here:

    var contentvalue= '<div style="color:   #008000;"><strong><b><?php echo  "$b[$j]" ?></b></strong></div>';

     var infowindow = new google.maps.InfoWindow({
      content: contentvalue,

        });
         marker.addListener('click', function() {

    infowindow.open(map, marker);
    });
             return marker[i];
    }   
}

Answer 1

Essentially, you are trying to do this backwards. You can use PHP to dynamically build a JavaScript block on the server side but, you cannot use PHP while JavaScript is executing. Since PHP is Server-side and JS is Client-side, you need to decide to go with one of the languages.

Also, you shouldn't be defining a function inside of your for loop. Just define the function outside and call it from within the for loop.

function addMarker(latLng, map) {
    var marker = new google.maps.Marker({
        position: latLng,
        map: map,
        animation:google.maps.Animation.BOUNCE
    });
    return marker;
}
function addInfoBox(contentString) {
    var infowindow = new google.maps.InfoWindow({
        content: contentString
    });
    return infowindow;
}
var i = 0
for(i=0; i < 20; i++)
{
    var contentString='<script>document.write('+i+');</script>'; 
    var marker = addMarker(latLng, map);
    var info = addInfoBox(contentString, marker);
    marker.addListener('click', function() {
        info.open(map, marker);
    });
}

This code is not at all perfect but, I think it gives a general idea of how you should start here. You'll have to clean it up and make sure it fits in with your application. I do not see a need for any PHP here as this is all client-side code and Google Maps API does not parse or execute any PHP code.

Answer 2

Try :

<script>    
    var phparr = <?php echo json_encode($phparr); ?>;

    for (i in phparr){

        alert("hey" + phparr[i]);

    }
</script>