How can my Perl program tell if is running under mod_perl?

Question

I'm thinking along the lines of global variables or environment variables.

I am only bothered about mod_perl >= 2.

[The manual](http://perl.apache.org/docs/2.0/user/coding/coding.html) says it's `$ENV{MOD_PERL}`. — Dallaylaen, Mar 12 '12 at 14:07

score 8 · Answer 1 · edited Jun 20 '20 at 09:12

8

According to "Environment Variables" in the mod_perl user's guide:

$ENV{MOD_PERL} - is set to the mod_perl version the server is running under. e.g.:
  mod_perl/2.000002
If $ENV{MOD_PERL} doesn't exist, most likely you are not running under mod_perl.
  die "I refuse to work without mod_perl!" unless exists $ENV{MOD_PERL};

(see the above link for more information).

edited Jun 20 '20 at 09:12

Community

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answered Mar 12 '12 at 14:04

ruakh

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score 2 · Accepted Answer · answered Mar 12 '12 at 14:14

2

http://perl.apache.org/docs/2.0/user/coding/coding.html#Environment_Variables says that there will be an environment variable MOD_PERL, so you could test for that using the expression

exists $ENV{MOD_PERL}

answered Mar 12 '12 at 14:14

zgpmax

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How can my Perl program tell if is running under mod_perl?

2 Answers2