php_mapscript - showing polygon and point/annotation layers

[Mike Reilly]

I have mostly completed a cgi mapserver application and am now trying
to convert parts of it over to php_mapscript.  I found it fairly
simple to draw a map from a mapfile using php, but now am starting to
learn a few more features and ran across the following stumbling
block:

If I use map->draw() I get an image created with all of the features
in the mapfile (all 68 layers, whee!).  This is expected behaviour. 
Because I want ot be able to select individual layers depending on
users preferences, I have been experimenting with map->prepareimage()
and then a series of layer->draw($image) - one of these for each
layer.  I then do a map->drawLabelCache() to ensure labels are drawn
on the map and finally save the map to temp and echo out the html to
display it.  The problem is that while the labels are displaying jsut
fine, any polygon or point/annotation data does not get displayed. 
What am I missing here (by the way, I get the impression I haven't
done a great job of formatting the map file - please feel free to
point out any errors and make suggestions).

Here's the php code:

	$mymap=ms_newmapobj('php.map');
	$image=$mymap->prepareImage();

	$currentlayer=$mymap->getLayerByName("landpl");
	$a=$currentlayer->draw($image);
	$currentlayer=$mymap->getLayerByName("boundary");
	$a=$currentlayer->draw($image);
	$currentlayer=$mymap->getLayerByName("lakespl");
	$a=$currentlayer->draw($image);
	$currentlayer=$mymap->getLayerByName("coastln");
	$a=$currentlayer->draw($image);	

	$currentlayer=$mymap->getlayerbyname("tusnotavailable");
	$a=$currentlayer->draw($image);
;
	$a=$mymap->drawLabelCache($image);	
	$imageurl=$image->saveWebImage();
	echo "<img src=".$imageurl.">";

The landpl, boundary, lakespl and coastln all work fine, but
tusnotavailable and a number of other layers similar to it don't. 
Here's the tusnotavailable layer (I'll put the other 3 working layers
at the end).

  LAYER
    NAME	tusnotavailable
    DATA	"tus points"
    STATUS      ON
    MAXSCALE	5000000000
    TYPE	ANNOTATION
    LABELITEM	"USE1"
    CLASSITEM	"USE1"
    LABELMAXSCALE 500000000
    TOLERANCE 3
    CLASS
      EXPRESSION "not available"
      SYMBOL	7 		
      SIZE	6	
      TEMPLATE  "templates/pointdata_query.html"
      COLOR	255 0 0
      LABEL
        COLOR 0 0 0
	TYPE TRUETYPE
	FONT arial
	SIZE 12 
        POSITION CC
        PARTIALS FALSE
        BUFFER 2
      END
    END
  END


Here are the layers that are being displayed correctly:
  LAYER
    NAME	"coastln"
    DATA	"coastln"
    STATUS      DEFAULT
    TYPE        LINE

    CLASS
      COLOR     0 0 200
      OUTLINECOLOR 0 0 200 
    END
  END

  LAYER #land polygons
    NAME	"landpl"
    DATA	"landpl"
    STATUS	DEFAULT
    TYPE	POLYGON
    CLASS
      COLOR	211 255 190
      OUTLINECOLOR 211 255 190
    END
  END

  LAYER #Creeks
   NAME		"streamln"
   DATA		"streamln"
   STATUS	ON
   TYPE		LINE
   CLASS
     COLOR	0 70 230
     OUTLINECOLOR 0 70 230
   END
  END

  LAYER #lakes polygons
    NAME	"lakespl"
    DATA	"lakespl"
    STATUS	DEFAULT
    TYPE	POLYGON

    CLASS
      COLOR	207 245 255
      OUTLINECOLOR 100 100 255 
    END
  END