how to find bounding county for given long/lat?

[Hal Mueller]

I believe you need to use getNumResults() on your layer object, and 
then iterate from 0 to getNumResults(), calling getResult() each time.

Note also that queryByPoint() does not return the value that you 
think it does--see documentation.  You can't use $returnVal the way 
you are using it.

Also
$resultCache=$overlayLayer->getResult(returnVal);
will call getResult() every time, because returnVal is not the same 
as $returnVal.

At 10:58 PM -0800 12/11/06, Ravi wrote:
>Hi Hal,
>
>Thanks for your help. I have made some progress. I am able to search 
>for a point and find a record number. However somehow the layer is 
>not able to return me the shape. It gives error
>"Fatal error: [MapServer Error]: msDBFGetItemIndex(): Invalid record 
>number 226. in C:\ms4w\Apache\htdocs\test.php on line 29"
>
>This is odd as it just returned the record number in the search. 
>Here is my script.
>
>------------------------------------------------------------------------
><?php
>dl("php_mapscript_4.10.0.dll");
>
>$map = 
>ms_newMapObj("C:/ms4w/apps/us_streets2005se-1/map/us_streets2005se-1.map");
>
>$overlayLayer = $map->getLayerByName("countiesLayer");
>
>$myApt = ms_newPointObj();
>$myApt->setXY(-120.997, 36.882);
>
>$returnVal=$overlayLayer->queryByPoint($myApt,$mapscript->MS_SINGLE,0);
>$resultCache=$overlayLayer->getResult(returnVal);
>$overlayLayer->open();
>$overlayLayer->getShape($resultCache->tileindex, 
>$resultCache->shapeindex);	// this line gives the error.
>?>
>------------------------------------------------------------------------
>
>Thanks for help
>Ravi
>
>
>Hal Mueller wrote:
>>In PHP Mapscript, the queryby... methods on the Layer class 
>>(http://mapserver.gis.umn.edu/docs/reference/phpmapscript-class/classes/layerobj 
>>) appear to do what you want--find the shape that matches the 
>>coordinates.  From there you can query the shape's attributes, get 
>>its FIPS code, and hit your database.
>>
>>Hal