17/02/10

Output filter
  - after handler, before transmitting response
  - e.g. compression on the fly
  - e.g. SSI

Dynamic content
  - SSIs
  - CGI
  - FastCGI
  - Embedding PHP/Perl into Apache
  - Java servlets

Server-Side Includes (SSIs)
  - a simple mechanism for embedding dynamic info 
    into an otherwise static HTML page
  - e.g. the current date
  - e.g. the contents of environment variables

Module: mod_include

Directives: 
  Options +Includes
  AddType text/html .shtml
  AddOutputFilter Includes .shtml

  Commands
    #echo
    #exec
    #include
    #set
    #if
    #else
    #endif

  Format
    <!--#command parameter="value" parameter="value" ... -->

  The command is executed; the result replaces the comment

  Very cheap (simple substitutions, done as an output
  filter)
  But not very powerful (not the power of a full
  programming language)

  Ideal for templates (headers, footers)

  But no longer very popular