[Mapserver-users] Single and multiple query in PHP mapscript

[woodbri at swoodbridge.com]

Bill,

Here are the essentials:

$qmode = MS_SINGLE or MS_MULTIPLE;  ### pick one

$point = ms_newPointObj();
$point->setXY($x, $y);

$map = ms_newMapObj(MAPFILE);
for ($i=0; $i<$map->numlayers; $i++) {

    $layer = $map->getLayer($i);
    $layer->set('status', MS_ON);
    $ret = @ $layer->queryByPoint($point, $qmode, -1.0);
    if ($ret == MS_SUCCESS) {
    $numResults = $layer->getNumResults();
    $layer->open($shapepath);

    for ($j=0; $j<$numResults; $j++) {
            $res = $layer->getResult($j);
            $shp = $layer->getShape($res->tileindex, $res-
>shapeindex);

            #  add code to get attributes from the shp object
            #  add code to get geometry from the shp object

            $shp->free();
    }
    $layer->close();
}

MS_SINGLE gives you the close object within TOLERANCE of the $x, $y
and MS_MULTIPLE gives you ALL objects within TOLERANCE.

I use code similar to this to do my reverse geocoder. You can check 
it out at http://imaptools.com/demos1/?tab=4

-Steve W.
  http://imaptools.com

On 12 Mar 2003 at 16:33, Hudspeth, Bill wrote:

> Can anyone send me example code and/or and explanation of how I would
> go about using PHP mapscript to perform single and multiple queries. I
> know that there is an example in the GMap demonstration files that
> uses the Rosa applet, but I would prefer at this point to avoid using
> it and to rely exclusively on mapscript.
> 
> Thanks, Bill
> 
> *********************************************************************
> *********************************************************************
> William Hudspeth, PhD Earth Data Analysis Center 107 Bandelier Hall
> West University of New Mexico Albuquerque, NM  87131 (505) 277-3622,
> ext. 238 bhudspeth at edac.unm.edu wbhk at unm.edu
> 
>