Use Google Map without key for dynamic address

Use Google Map without key for dynamic address

<?php
$address = "Mavviya Nagar Jaipur";
$address = str_replace(" ", "+", $address);
$json = file_get_contents("http://maps.google.com/maps/api/geocode/json?address=$address&sensor=false");
$json = json_decode($json);
$lat = $json->{'results'}[0]->{'geometry'}->{'location'}->{'lat'};
$long = $json->{'results'}[0]->{'geometry'}->{'location'}->{'lng'};

$aLocation = array("title" => 'title',"content" => 'Content',"lat" => $lat,"lon" => $long);
$aLocation = json_encode($aLocation);

?>
<div id="map" style="width:500px;height:400px;"></div>
<script>
var aLocation = <?php echo $aLocation; ?>;
function initMap() {
    myLatLng = {lat: aLocation['lat'], lng: aLocation['lon']};
    var title = aLocation['title'];
    var content = aLocation['content'];
    map = new google.maps.Map(document.getElementById('map'), {
    zoom: 8,
    scrollwheel:  false,
    center: myLatLng
    });
   
    var infowindow = new google.maps.InfoWindow()
    var marker = new google.maps.Marker({ 
        map: map, title: title , position: myLatLng 
    });
    google.maps.event.addListener(marker,'click', (function(marker,content,infowindow){
    return function() {
    infowindow.setContent(content);
    infowindow.open(map,marker);
    };
    })(marker,content,infowindow));
   
}
</script>
<script async defer src="https://maps.google.com/maps/api/js?sensor=false&callback=initMap"></script>


//to handle error if not result found

 <?php
                $address = $product_address;
                $address = str_replace(" ", "+", $address);
                $json = @file_get_contents("http://maps.google.com/maps/api/geocode/json?address=$address&sensor=false");
                $json = @json_decode($json);
                if($json->{'status'}!="ZERO_RESULTS"){
                $lat = $json->{'results'}[0]->{'geometry'}->{'location'}->{'lat'};
                $long = $json->{'results'}[0]->{'geometry'}->{'location'}->{'lng'};

                $aLocation = array("title" => 'Location',"content" => $product_address,"lat" => $lat,"lon" => $long);
                $aLocation = json_encode($aLocation);
             
                ?>
                <div class="map">
                 <div id="map" style="width:360px;height:300px;"></div>
                </div>
              <?php } else{  }   ?>