Using the HTML5 Geolocation API I’ve ended up with some variables in Javascript that I need to pass to PHP in order to continue. My code is below, how could it be achieved? I’ve tried things along the lines of $variable = <script>document.write(variable);</script>;
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset=utf-8 />
<meta name="viewport" content="width=620" />
<title>test</title>
</head>
<body>
<script type="text/javascript">
//Check if browser supports W3C Geolocation API
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(successFunction, errorFunction);
}
else {
document.write("Geolocation is required for this page.");
}
function successFunction(position) {
var lat = position.coords.latitude;
var lng = position.coords.longitude;
}
function errorFunction(position) {
document.write("Error");
}
</script>
<?php
error_reporting(E_ALL);
ini_set('display_errors', '1');
$lat = //TAKE FROM JAVASCRIPT
$lng = //TAKE FROM JAVASCRIPT
$url = "http://api.geonames.org/findNearbyPlaceNameJSON?lat='.$lat.'&lng='.$lng.'&username=demo";
$json = file_get_contents($url);
$data = json_decode($json, true);
$geonames = $data['geonames'][0];
$town = $geonames['name'];
echo "Displaying results near ".$town.". <a href=#>Not in ".$town."?</a>";
?>
</body>
</html>
EDIT: OK, I’ve done some homework and now I know I’m looking at an AJAX XMLHttpRequest to slick over the two. However, its syntax has slightly thrown me (not to mention the cross-browser issues). Can anyone give me a nudge in the right direction with this one?
You are mixing Server-side scripting along with browser-side scripting
$variable dissapears on the browser-side and so it will always hold “document.write(variable);” whatever the script inside there is written in.
You can however use AJAX to send the data back to php & process it there.