Please help: "map context is not enabled"

[Xiongjiu Liao]

 Hello, everyone:
   I am working on a project with Mapserver, but I meet some problems with
 it,
 would you please give some ideals? Really appreciate it.

 ###########################
 a)  here is the error message:

 Warning: [MapServer Error]: msSaveMapContext(): Not implemented since Map
 Context is not enabled. in /www/htdocs/context_script.php on line 4

 Warning: Failed saving map context from gmap_wms_context_output.xml in
 /www/htdocs/context_script.php on line 4


 #################
   b) here is the php program I want to test:
     <?php
       dl("php_mapscript.so");
       $oMap = ms_newMapObj("/www/htdocs/tutorial/context_test1.map");
       $oMap->saveMapContext("gmap_wms_context_output.xml");
     ?>


 ##############
   c) here is my Mapserver configure output:
  ./mapserv40 -v
 MapServer version 4.2.5 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP
 SUPPORTS=PROJ SUPPORTS=FREETYPE SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT
 SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT INPUT=EPPL7 INPUT=OGR INPUT=GDAL
 INPUT=SHAPEFILE



 #############################
 d) here is my mapfile:

   Map
   NAME EX3.1_
   status on
   PROJECTION
      "init=epsg:2163"
   END

 web
   IMAGEPATH '/www/htdocs/tutorial/data/tmp/'
   IMAGEURL '/tutorial/data/tmp/'
   METADATA
       "WMS_TITLE" "UMN MapServer Upper Great Lakes Application"
       "WMS_ONLINERESOURCE"
 "http://localhost/cgi-bin/mapserv40?map=context_test1.map&"
       "WMS_SRS"  "EPSG:2163 EPSG:4326 EPSG:26915 EPSG:26916"
   END
 end

    LAYER
      NAME         states
      DATA         states_ugl
      STATUS       DEFAULT
      TYPE         POLYGON
      METADATA
        "wms_title" "Elevation/Bathymetry"
        "wms_srs"   "EPSG:42304 EPSG:4269 EPSG:4326"
      END
      #CONNECTIONTYPE WMS
      #CONNECTION
 "http://www2.dmsolutions.ca/cgi-bin/mswms_gmap?#VERSION=1.1.0&LAYERS=bathymet
 ry&FORMAT=image/png"
     # PROJECTION
      #  "init=epsg:42304"
      #END
     END

 end

 ##############################


   Thank you very much!