MapServer CGI Introduction¶
Variable names are not case sensitive.
In cases where multiple values are associated with a variable (eg. mapext), the values must be separated by spaces (or their escaped equivalents for GET requests).
Variable contents are checked for appropriate data types and magnitude as they are loaded.
Any CGI Variable not listed below is simply stored and can be referenced within a template file.
From MapServer version 4.x to version 5.x¶
Modifying map parameters through a URL has changed to allow for chunks of a mapfile to be modified at once. The syntax has changed accordingly, so please see the Changing mapfile parameters via a form or a URL section.
From MapServer version 3.x to version 4.x¶
New way to perform attribute queries: No longer do you set a layer filter, but rather you pass a query string (and optionally a query item) to the query function. To do this two new CGI parameters were added to MapServer: QSTRING and QITEM.
SAVEMAP is switched off: The SAVEMAP functionality is considered insecure, since the saved files are accessible by everyone.
TEMPLATE has been removed, since the map_web_template syntax can be used to alter a template file. Simplifies security maintenance by only having to deal with this option in a single place. Note that the TEMPLATEPATTERN of the mapfile has to be used to enable this feature.