data.php

## data.php
<?php
$name = $_POST["name"];
$lat = $_POST['latitude'];
$lon = $_POST['longitude'];

//TODO: Save to db
echo date('d M Y h:i:s');
?>

## index.php
<html>
<head>
<title>Tracker by &#936; [PSI]</title>
<style type="text/css">
<!--
input[type=text] { margin-bottom: 8px; display: block; clear: right; width: 150px; }
label { float: left; display: block; width: 50px; text-align: right; padding-right: 8px; }
.buttons { padding-left: 58px; margin-bottom: 8px; }
//-->
</style>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
	$name = myCookie('name', null);
	if ($name) $('#name').val($name);
});

function getLocation() {
	if (navigator.geolocation) {
		navigator.geolocation.getCurrentPosition(showPosition);
	} else {
		$("#latitude").val("not supported.");
		$("#longitude").val("not supported.");
	}
}

function showPosition(position) {
	$("#latitude").val(position.coords.latitude);
	$("#longitude").val(position.coords.longitude);
}

function saveLocation()
{
	if ($('#name').val() == '')
	{
		alert('Please enter your name');
		$('#name').focus();
		return;
	}

	getLocation();
	myCookie('name', $('#name').val());
	$.ajax({
		url: "data.php",
		type: 'POST',
		data: $('form').serialize()
	}).success(function(response) {
		$('#saved').val(response);
	}).error(function(response) {
		$('#saved').val("an error occurred");
	});
}
function myCookie(key, val)
{
	if (val != null)
	{
		document.cookie = key + "=" + val;
		return;
	}

	val = document.cookie;
	if (val == null) return false;
	return val.replace(key + '=', '').split('; ')[0];
}
</script>
</head>
<body>
<form method="post">
	<label for="name">Name:</label>
	<input type="text" name="name" id="name" />

	<label for="latitude">Lat:</label>
	<input type="text" name="latitude" id="latitude" />

	<label for="longitude">Long:</label>
	<input type="text" name="longitude" id="longitude" />

	<div class="buttons">
		<input type="button" onclick="javascript:saveLocation();" value="save" />
	</div>

	<label for="saved">Saved:</label>
	<input type="text" name="saved" id="saved" readonly="readonly" />
</form>
</body>
</html>