PostGIS PHP App

Access

A web application employing PostGIS, PHP, and LeafletJS.

This application uses the PHP-Database-GeoJSON file from https://github.com/bmcbride/PHP-Database-GeoJSON

It can be access via the Leaflet tab on the home page:

../_images/LeafletPHP.png

It can also be access directly via url at:

http://domain.com/LeafletPHPDemo.html

Initialize

If you do not have PHP installed, you can do so using:

apt install php libapache2-mod-php php-pgsql

Open /var/www/html/get-json.php and located line 12 below:

$conn = new PDO(‘pgsql:host=localhost;dbname=postgisftw’,’pgis’,’<YourPgisPassword>’);

Replace <YourPgisPassword> with the password for user pgis.

The password for user pgis is auto-generated and can be found at /home/pgis/.pgpass

Usage

Navigate to http://domain.com/LeafletPHPDemo.html and the app will appear as shown below:

../_images/LeafletPHPDemo.png

Click on the Layer to view the getFeature info for the State.

Structure

The app is located at:

/vaw/www/html/LeafletPHPDemo.html

This is just a basic Leafletjs map in which we are pulling in geojson from get-json.php:

$.getJSON("get-json.php", function(data) {

Content

The content of the html page is displayed below.

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     <!doctype html>
     <html>
     <head>
     <style type="text/css">
     body {
     padding: 0;
     margin: 0;
     }

     html, body, #map {
     height: 100%;
     }

     </style>

     <link rel="stylesheet" href="https://unpkg.com/leaflet@1.1.0/dist/leaflet.css"
     integrity="sha512-wcw6ts8Anuw10Mzh9Ytw4pylW8+NAD4ch3lqm9lzAsTxg0GFeJgoAtxuCLREZSC5lUXdVyo/7yfsqFjQ4S+aKw=="
     crossorigin=""/>

     <script src="https://unpkg.com/leaflet@1.1.0/dist/leaflet.js"
     integrity="sha512-mNqn2Wg7tSToJhvHcqfzLMU6J4mkOImSPTxVZAdo+lcPlk+GhZmYgACEe0x35K7YzW1zJ7XyJV/TT1MrdXvMcA=="
     crossorigin=""></script>
     </head>

     <script src="http://code.jquery.com/jquery-2.1.0.min.js"></script>
     </head>
     <body>
     <div id="map"></div>
     <script>


     var osmUrl='http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png';
     var osmAttrib='Data &copy <a href="http://openstreetmap.org">OpenStreetMap</a> contributors';
     var osm = new L.TileLayer(osmUrl, {minZoom: 2, maxZoom: 8, attribution: osmAttrib});

     $.getJSON("get-json.php", function(data) {

     function onEachFeature(feature, layer) {
       layer.bindPopup("Name: " + feature.properties.name + "<br>" + "Abbreviation: " + feature.properties.abbrev);
       }

     var geojson = L.geoJson(data, {
     onEachFeature: onEachFeature
     });

     var map = L.map('map').fitBounds(geojson.getBounds());

     osm.addTo(map);
     geojson.addTo(map);
     });
     </script>

     </body>
     </html>