Getting GeoJSON string

• csv-points-geojson.php
• sqlite-points-geojson.php
• geojson-postgis-4326.php

Viewing GeoJSON data with Leaflet

• leaflet-4-p1-0-base.html
• leaflet-4-p1-1-csv-points.html
• leaflet-4-p1-2-sqlite-points.html
• leaflet-4-p1-3-postgis-4326.html

Adding points to database (PostgreSQL + PostGIS) [link]