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Informations about the package spatialite
Install
Note that you have to install first sqlite3 / mod_spatialite and spatialite to run this library.
Tests
Basic usage
Create a new empty DB :
use Spatialite\SPL;
$db = new SPL( SPL::CreateNewEmptyDB('test.sqlite') );
// Or connect an existing Spatialite DB :
$db = new SPL( 'path/to/mydb.sqlite' );
Load shapfile :
$db->loadShapefile('path/to/shapefile/commune', 'commune', [
'srid' => 2154,
'charset' => 'UTF-8'
]);
Query :
$result = $db->query("
SELECT numero, nom_acc, statut, AsText( ST_Centroid(geom) ) AS centroid
FROM commune
LIMIT 3
")->fetchAll(SPL::FETCH_OBJ);
// output :
Array
(
[0] => stdClass Object
(
[numero] => 71176
[nom_acc] => Digoin
[statut] => Chef-lieu de canton
[centroid] => POINT(778668.545898 6599300.563594)
)
[1] => stdClass Object
(
[numero] => 71590
[nom_acc] => Volesvres
[statut] => Commune simple
[centroid] => POINT(789596.3737 6597690.519251)
)
[2] => stdClass Object
(
[numero] => 71325
[nom_acc] => La Motte-Saint-Jean
[statut] => Commune simple
[centroid] => POINT(773591.803208 6602067.726544)
)
)
Dump shapefile :
$db->dumpShapefile('./shapefile', 'commune', [
'charset' => 'UTF-8',
'geomcolumn' => 'geom'
]);
About Spatialite
SpatiaLite implements spatial extensions following the specification of the Open Geospatial Consortium (OGC).
At a very basic level, a DBMS that supports Spatial Data offers an SQL environment that has been extended with a set of geometry types, and thus may be usefully employed i.e. by some GIS application.
A geometry-valued SQL column is implemented as a column that has a geometry type. The OGC specification describe a set of SQL geometry types, as well as functions on those types to create and analyze geometry values.
SpatiaLite 4.2.0 - SQL functions reference list