[Mapserver-users] Implementing QueryByAttribute

[Vinko Vrsalovic]

On Fri, Dec 13, 2002 at 10:23:50AM -0800, Jeff Berry wrote:
 
> Below is the code I've included in the main PHP code of my phtml file.
> There is a textline labeled OwnerName.  I get a parser error on the
> QueryByAttributes line.  I don't know what I'm doing wrong.
> 
> Any suggestion as to what the problem is?
 
I guess you need to read the PHP Manual :-)

This is a mix between Perl and PHP syntax, and that usually doesn't
work.
 
> if ($HTTP_FORM_VARS[OwnerName])

if ($HTTP_FORM_VARS['OwnerName'])

and it's either HTTP_POST_VARS or HTTP_GET_VARS, AFAIK

>   {
>     $layer->$map->getLayerByName('parcels');
>     $layer->{status} = MS_ON;

Syntactically this should be:

$layer->status = MS_ON;

But, due to some limitations in PHP, it actually is:
$layer->set("status",MS_ON);

>     $layer->{filteritem} = "OWNER";

the same here

>     $layer->setfilter("\"$OwnerName\"");

if $OwnerName defined? shouldn't this be $HTTP_POST_VARS['OwnerName'] ?

>     &rv = $layer->queryByAttributes($map, MS_SINGLE);

$rv, not &rv (if you want a reference instead of a copy, you do
$rv = & $layer....)

>     if ($rv == MS_SUCCESS)
>       {
>         for ($i=0; $1<$layer->{resultcache}->{numresults}; $i++)

without {}'s

>           {
>             $result = $layer->getResult($i);
>             $rvshape = $layer->getShape($shape, $result->{tileindex},
> $result->{shapeindex});

without {}'s

>             $shpbnd = $rvshape->bounds;
>             &map->setextent( $shpbnd->{xmin}, $shpbnd->{ymin},
> $shpbnd->{xmax}, $shpbnd->{ymax} );

likewise, $ instead of & and $shpbnd->xmax

HTH,
-- 
Vinko Vrsalovic <el[|- at -|]vinko.cl>
http://www.cprsig.cl