[Mapserver-users] $shp->{resultscache} empty queryByPoint php mapscript - help!

[poff]

Hello all,

In a quest to get a php mapscript file to locate a click and return a 
database value, you will have seen my many postings!

I can get a result, only it's "blank"...

Well I've made a super simplified setup and here it is:

php_mapscript 3.6.6
windows nt/apache 1.3.8 - red hat linux

test.map
NAME TEST_MAP

EXTENT -180 -90 180 90
SIZE 370 331
IMAGETYPE PNG

UNITS DD

WEB

  IMAGEPATH "/home/user/tmp/img/"
  IMAGEURL  "/imgtmp/"

END
	
LAYER
	NAME "QueryLayer"
	STATUS OFF
	TYPE POINT
	
	TEMPLATE "dummy"
	
	CLASS
		NAME "User Marker"
		SYMBOL "marker"
		COLOR 255 0 0
		SIZE 4
	END
END
  
SYMBOL
	NAME 'marker'
	TYPE ELLIPSE
	POINTS 1 1 END
	FILLED TRUE
END

END

the php file

<?php

dl("php_mapscript.so");

$map = ms_newMapObj("/home/user/maps/test.map");

$uLayer = $map->getLayerByName("QueryLayer");
$uLayer->set("status",MS_ON);

/* zoom/pan stuff */

if ( isset($_REQUEST["mapa_x"])) {

	$zoom=($_REQUEST["zoom"]=="select") ? 0 : $_REQUEST["zoom"];
	
	$extent_to_set = explode(" ",$_REQUEST["extent"]);
	
	$map->setextent($extent_to_set[0],$extent_to_set[1],
			$extent_to_set[2],$extent_to_set[3]);

	$my_point = ms_newpointObj();
	$my_point->setXY($_REQUEST["mapa_x"],$_REQUEST["mapa_y"]);

	$my_extent = ms_newrectObj();
	$my_extent->setextent($extent_to_set[0],$extent_to_set[1],
			$extent_to_set[2],$extent_to_set[3]);

	$zoom_factor = $zoom*$_REQUEST["power"];

	$val_zsize = abs($zoom_factor);
	
	if ($zoom_factor == 0)
		$zoom_factor=1;

	
	$map->zoompoint($zoom_factor,$my_point,$map->width,$map->height,
			$my_extent);

	$val_zsize = $_REQUEST["power"];
}

$image=$map->draw();

/* sample lat/lon values */

$points=Array(
"-0.1"=>"57",
"33"=>"33",
"66"=>"-55");

foreach ($points as $x => $y) {

	$i++;
	
	$oPoint = ms_newPointObj();
	$oPoint->setXY($x, $y);

	$oPoint->draw($map, $uLayer, $image, 0, "test");
	
	$line = ms_newLineObj();
      	$line->add($oPoint);
      	
      	$shp=ms_newShapeObj(MS_SHAPE_POINT);
      	$shp->add($line);
      	$shp->{text}="test$i";
      	$shp->{index}=$i;
      	$uLayer->addFeature($shp);

}

/* if we are selecting a click */

if ( isset($_REQUEST["zoom"]) && $_REQUEST["zoom"]=="select") {
	
        $dfKeyMapXMin = $map->extent->minx;
        $dfKeyMapYMin = $map->extent->miny;
        $dfKeyMapXMax = $map->extent->maxx;
        $dfKeyMapYMax = $map->extent->maxy;

        $dfWidthPix = doubleval($image->width);
        $dfHeightPix = doubleval($image->height);
        
        $nClickGeoX = GMapPix2Geo($_REQUEST['mapa_x'], 0, $dfWidthPix, 
$dfKeyMapXMin, 
                                   $dfKeyMapXMax, 0);
        $nClickGeoY = GMapPix2Geo($_REQUEST["mapa_y"], 0, $dfHeightPix, 
$dfKeyMapYMin, 
                                  $dfKeyMapYMax, 1);	
                                  
	$my_point = ms_newpointObj();
	$my_point->setXY($nClickGeoX,$nClickGeoY);
	
	$uLayer->queryByPoint($my_point, MS_SINGLE, 200);
	
	$results = $uLayer->{resultcache};
	
	$rslt = $uLayer->getResult(0);
	
	$database_id = $rslt->{shapeindex};
	
	echo $database_id;

	// always -1
	
	exit;

}

$image_url=$image->saveWebImage(MS_PNG,1,1,0);

$extent_to_html = $map->extent->minx." ".$map->extent->miny." 
".$map->extent->maxx." ".$map->extent->maxy;

?>

<form action="<?php echo $_SERVER["PHP_SELF"]?>" method="GET">

<input type=image name="mapa" width="<?=$map->width?>" 
height="<?=$map->height?>" src="<?=$image_url?>">

<br>

<input name=zoom value="1" type="radio"> zoom in<br>
<input name=zoom value="-1" type="radio"> zoom out<br>
<input name=zoom value="0" type="radio"> pan<br>
<input name=zoom value="select" type="radio"> select<br>

<input type="text" size="5" name=power class="theinput" VALUE="<?php echo 
$val_zsize?>"> zoom power

<INPUT TYPE=HIDDEN NAME="extent" VALUE="<?php echo $extent_to_html?>">

</form>

<?php

/* from gmap */

function GMapPix2Geo($nPixPos, $dfPixMin, $dfPixMax, $dfGeoMin, $dfGeoMax, 
                     $nInversePix) 
{
    
    $dfWidthGeo = $dfGeoMax - $dfGeoMin;
    $dfWidthPix = $dfPixMax - $dfPixMin;
   
    
    $dfPixToGeo = $dfWidthGeo / $dfWidthPix;

    if (!$nInversePix)
        $dfDeltaPix = $nPixPos - $dfPixMin;
    else
        $dfDeltaPix = $dfPixMax - $nPixPos;

    $dfDeltaGeo = $dfDeltaPix * $dfPixToGeo;


    $dfPosGeo = $dfGeoMin + $dfDeltaGeo;

    return ($dfPosGeo);
}

?>

If you could see anything I'm doing wrong I'd be MOST grateful!!

Thanks,

P
-- 
poff at sixbit.org
SDF Public Access UNIX System - http://sdf.lonestar.org

Please do not carbon copy replies to me