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 Topic: How do I access Linux environment variables using Apache2.2 |
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cf_00
Joined: 07 Mar 2014
Posts: 1
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 Posted: Fri 07 Mar '14 19:36 Post subject: How do I access Linux environment variables using Apache2.2 |
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I am developing a php web application using Apache on CentOS6. I have set a custom environment variable in CentOS on command line by using: export test_var=3
I cant figure out why I am unable to print this Linux shell variable in my php script on my web-application. Apache seems to pull up its own environment variables only and ignores Linux environment variables.
Things I have tried so far:
1. I have set variable 'variables_order='EGPCS'' in /etc/php.ini. This has allowed me to access Linux variables using PHP CLI but not in my web-application.
2. I tried adding line PassEnv test_var in my Apache configuration file (httpd.conf) but Apache returns a blank value in my application. Passenv works when I add line export test_var=1 in /etc/init.d/httpd but I don't want to use this because I already have this variable declared and set in Linux and so I don't want to set it again.
3. I have written a shell script and have tried using exec to execute the shell script but when I try to print it using print_var, I get a blank array.
Any suggestions? I don't want to set the variable in any file because I have already set it in in Linux. I'm want to pull up the variable from the OS itself.
The Apache documentation says PassEnv should do the trick:
(https://httpd.apache.org/docs/2.2/mod/mod_env.html#passenv)
| Quote: | | Specifies one or more native system environment variables to make available as internal environment variables, which are available to Apache HTTP Server modules as well as propagated to CGI scripts and SSI pages. Values come from the native OS environment of the shell which invoked the httpd process. |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7371
Location: Germany, Next to Hamburg
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| Posted: Mon 10 Mar '14 16:24 Post subject: |
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Why so complex? Just use getenv(); or better $_ENV
| Code: |
<?php
echo 'My username is ' .$_ENV["USER"] . '!';
?>
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| Code: |
export APP_ENV="development"
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| Code: |
<?php
print $_ENV["APP_ENV"];
print getenv("APP_ENV");
?>
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