Apache Reference: mod_perl, PerlPassEnv

PerlPassEnv

Control the Variables Passed to the SSI/CGI Environment
Syntax: PerlPassEnv variable [variable ...]
Example: PerlPassEnv FOO_BAR FOO_BAZ
Since: Apache 1.2

This directive is similar to Apache's standard PassEnv directive; that is, it controls which variables (set via PerlSetEnv) are actually passed to the SSI/CGI environment. It differs from PassEnv in that PerlPassEnv is evaluated much earlier in the HTTP processing, so that variable is available of an earlier point to Perl modules.