PHP: Environment variable not readable by getenv()

Question

I am using .htaccess file for setting an environment variable

SetEnv ENV "development"

It can be read by $_SERVER['ENV'] but not by getenv('ENV'); For getenv() I have to use

putenv('ENV=development');

Don't know why variable which is set in .htaccess is not readable by getenv().

Edit: Because I am using a foreign script where "ENV" is asked I did not realise that just the name "ENV" is causing trouble (reserved?). A test with just another environment variable name works as expected

SetEnv REDIRECT_ENV "development"

Edit 2: Environment is Apache 2.2, fastcgi, debian wheezy, php5.4.4 I noticed this behaviour on VirtualBox VM and on rooted server online with same components

@WereWolf: that's great to know ;) Did you test it with "ENV"? — inco
– inco, Commented Jun 30, 2014 at 12:49

shivanshu patel · Accepted Answer · 2014-07-01 10:07:34Z

1

You can do with mod_rewrite to detect env:

RewriteEngine on

RewriteCond %{HTTP_HOST} ^stage\.domain\.com$
RewriteRule (.*) $1 [E=PYRO_ENV:stage]

RewriteCond %{HTTP_HOST} ^www\.domain\.com$
RewriteRule (.*) $1 [E=PYRO_ENV:production]

and

SetEnvIf Host ^stage\.example\.com$ PYRO_ENV=stage
SetEnvIf Host ^(www\.)?example\.com$ PYRO_ENV=production

answered Jul 1, 2014 at 10:07

shivanshu patel

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3 Comments

inco Over a year ago

Thanks for your variations, but all of them don't work if the name is "ENV". Just another variable name does it.

Ifedi Okonkwo Over a year ago

So maybe "ENV" is a reserved word in this situation. Could you perhaps use another term? Afterall, its just another variable name, right?

shivanshu patel Over a year ago

Yes I ENV is reserved. Cehck here php.net/manual/en/reserved.variables.environment.php

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