[mapserver-users] Question about php mapscript

[Zhao Ying (CDU)]

Greetings,

 

About the following mapscript code, I don't understand very well.

Is it about to generate a new feature node with line, point object
embedded? 

Will it do some updates to the map file stored in the server?

 

 

/* $qresult: an array that corresponds to the fetched rows.*/

function AddPoints ( $map, $qresult ) {

 

     // Use lat/long info from query results to add points 

     // to the points-of-interest layer of the map

     // shape index is set to the store-id 

     // (this requires a patched version of Mapscript)

 

     $this_layer = $map->getLayerByName('poi');

 

     $i = 0;

     foreach($qresult as $row) {

        $poi[$i] = ms_newPointObj();

        $ln[$i] =  ms_newLineObj();

        $shp[$i] = ms_newShapeObj(MS_SHAPE_POINT);

 

      /* $row[2] is latitude,$row[3] is longtitude from database*/

        $poi[$i]->setXY($row[3],$row[2]); 

        $ln[$i]->add($poi[$i]);      

        $shp[$i]->add($ln[$i]);

 

     /* $row[0] is address field from database. */

        $shp[$i]->set(index, $row[0]); 

        $this_layer->addFeature( $shp[$i] );

        $i++;

     }

 

     return;

 

} // end AddPoints

 

Thanks!

 

Jeff

Chengdu China.


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