dymanic extent in php-mapscript (returning -1,-1,-1,-1)

[Shashi Gireddy]

Hi all,

I have a problem with dymaic extent from php-mapscript, its not
accepting the change of extent from my php code, here is the code
snippet.


        list( $cnty, $cntyname, $minx, $miny, $maxx, $maxy)= split
('[/_]',$cnty1);

        $ext = ms_newRectObj();
    $ext->{minx} = -86.91;//$minx;
    $ext->{miny} = 32.28;//$miny;
    $ext->{maxx} = -86.38;//$maxx;
    $ext->{maxy} = 32.84;//$maxy;
    $map->{extent} = $ext;
    echo $minx; echo " "; echo $miny; echo " "; echo $maxx; echo " ";
echo $maxy;
    
here is the generated map file.. 
MAP
  EXTENT -1 -1 -1 -1
  IMAGECOLOR 255 255 255
  IMAGETYPE gif
  SYMBOLSET "c:/maps/symbols/symbols35.sym"
  SHAPEPATH "c:/maps/alabama_maps/tracts/"
  SIZE 500 500
  STATUS ON
  UNITS MILES
  NAME "FIRSTMAP" 
...

can anybody help me please..
thank you,
shashi.








-- 
Shashi Kiran Reddy. Gireddy,
Graduate Assistant,
CBER, University of Alabama.
http://www.cs.ua.edu/shashi
Home: 205-752-5137 Cell: 205-657-1438