How to define a variable in apache's httpd.conf file?

Question

I want to define a variable in Apache server\'s httpd.conf configuration file.

Ex: variable static_path = C:\\codebase\\snp_static

Answer 1

Apache2.4 I researched it out and here is what worked for me. and tested using httpd_z.exe -t -D DUMP_RUN_CFG

   RESULTS:::
    ServerRoot: "C:/path/core/apache2"
    Main DocumentRoot: "C:/path/apache/htdocs"
    Main ErrorLog: "C:/path/core/apache2/logs/error.log"
    Mutex rewrite-map: using_defaults
    Mutex default: dir="C:/path/core/apache2/logs/" mechanism=default
    PidFile: "C:/path/core/apache2/logs/httpd.pid"
    Define: DUMP_RUN_CFG
    Define: US_ROOTF=C:/path   **THIS IS THE ROOT PATH VARIABLE I JUST MADE**
    Define: php54


  #
    #  Define servername test.example.com
    #
    #
    #  Define servername www.example.com
    #  Define SSL
    #
    #DocumentRoot /var/www/${servername}/htdocs

 Define US_ROOTF C:/PATH   **The path i want the variable for**


 Define US_ROOTF C:/PATH    **The path i want the variable for**
#  Define SSL

#DocumentRoot /var/www/${servername}/htdocs  OPTIONS ON HOW TO USE

EXAMPLE of use 
ServerRoot = ${US_ROOTF}

  LoadFile "${US_ROOTF}/core/php54/icudt53.dll"
PHPIniDir "${US_ROOTF}/core/php54/php_production.ini"

I was told never to use a direct HARD path to anything when serving something to the internet always use variables to help secure your system.

I found the hard way this is so true. Now I finally figured out how to set the variables for all services dealing with Apache i use them.

Hope it helps you too.