[Cartoweb-users] passing a variable from php to map file

oliver oliver.christen at camptocamp.com
Fri May 12 02:08:06 EDT 2006

Hi Aileen

a configuration file is a simple text file containing the variable assignation, like this:

CARTOCLIENT_BASE_URL = "http://your/path/to/cartoweb/htdocs/"

SHAPEPATH = "/bla/bla/bla/bla"

DB_USER   = xxxx
DB_PASSWD = yyyy
DB_HOST   = localhost
DB_PORT   = 1234
DB_NAME   = test

then just point on this file when  launching the setup script:
cw3setup.php --install --config-from-file /some/path/to/the/config/file/config_file
the setup script will look for all files whose extension is .ini.in and replace the variable accordingly to what you seted in the configuration file.


  hi oliver.

  I'm sorry but i'm failrly new to this.
  How do you set a configuration file containing the variable replacement values?

  I would appreciate any help.


    Hi Aileen,

    by 'passing a variable from php to a map file' you mean writing some parameters to the mapfile before usage (like database connetions parameters) or  modifying the mapfile object on the fly to imediat usage?

    To write parameters you can use the install script function, change your mapfile extension to .map.in and add the variables replacement tags @YOUR_VARIABLE@ where they are needed. After that set a configuration file containing the variable replacement values. Then you just need to do a cw3setup.php --install --config-from-file path_to_and_name_of_the_config_file

    If you need to modify the mapfile object on the fly, you can have a look at the plugin Outline, in ServerOutline.php 

    $msMapObj = $this->serverContext->getMapObj(); this will get you the map object
    then its just a question of using phpmapscript functions and properties: http://mapserver.gis.umn.edu/docs/reference/phpmapscript-class/referencemanual-all-pages

    there are some exemple of usage in ServerOutline.php to access, create, modify and remove elements (layers, style, class, ... )



      We are having trouble passing a variable from php to a map file.

      How do you declare this in php?
      How do you catch this in the map file?

      We want to pass the "source_id" & "target_id" to the mapfile?
      we are still on the R&D stage and we are trying to customize the demoPlugin but with our data?

      Any help will be much appreciated.



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