[Mapserver-users] setting layers on/off using phpmapscript

Tue Sep 9 11:31:20 EDT 2003

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Am I doing something wrong?  The following code gives me an error.  
Since I don't have 78 lines of code in my php file, I'm assuming 
something in my .map file may be causing this error.  However if I take 
out the php code trying to set the layer status, the map will render fine.

Fatal error: Object expected as argument. in 
D:\Inetpub\rootbeta\map_engine\wnvfetchmap.php on line 78

          $myMap = ms_newMapObj("wnv.map");
          $countyLayer = $myMap->getlayerbyname(counties);
          $countyLayer->set("status",0);
          $myMap->selectOutputFormat("PNG");
          $image=$myMap->draw();
          $image_url=$image->saveWebImage();

layer portion of map file

LAYER
  NAME counties
  METADATA
    "DESCRIPTION" "Counties"

  END
  TYPE POLYGON
  STATUS ON
  DATA counties

CLASSITEM 'Pop1999'
NAME Pop1999
TEMPLATE us_pop.html
CLASS
  EXPRESSION ([Pop1999] > 0 and [Pop1999] < 5284)
  COLOR 255 255 229
  OUTLINECOLOR 0 0 0
END

END # end class

END # end layer

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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
 <meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1">
 <title></title>
</head>
<body text="#000000" bgcolor="#ffffff">
Am I doing something wrong?&nbsp; The following code gives me an error.&nbsp;
Since I don't have 78 lines of code in my php file, I'm assuming
something in my .map file may be causing this error.&nbsp; However if I take
out the php code trying to set the layer status, the map will render
fine. 
 
Fatal error: Object expected as argument. in D:\Inetpub\rootbeta\map_engine\wnvfetchmap.php
on line 78 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $myMap = ms_newMapObj("wnv.map"); 
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; $countyLayer = $myMap-&gt;getlayerbyname(counties); 
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; $countyLayer-&gt;set("status",0); 
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; $myMap-&gt;selectOutputFormat("PNG"); 
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; $image=$myMap-&gt;draw(); 
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; $image_url=$image-&gt;saveWebImage(); 
 
 
layer portion of map file 
 
 
LAYER 
&nbsp; NAME counties 
&nbsp; METADATA 
&nbsp;&nbsp;&nbsp; "DESCRIPTION" "Counties" 
&nbsp; 
&nbsp; END 
&nbsp; TYPE POLYGON 
&nbsp; STATUS ON 
&nbsp; DATA counties 
 
CLASSITEM 'Pop1999' 
NAME Pop1999 
TEMPLATE us_pop.html 
CLASS 
&nbsp; EXPRESSION ([Pop1999] &gt; 0 and [Pop1999] &lt; 5284) 
&nbsp; COLOR 255 255 229 
&nbsp; OUTLINECOLOR 0 0 0 
END 
 
END # end class 
&nbsp; 
END # end layer 
</body>
</html>

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