Apache Reference: mod_perl, PerlOpmask

PerlOpmask

Configure Perl Operator Mask
Syntax: PerlOpmask A
Example: PerlOpmask conf/perl.opmask
Since: Apache 1.2

This directive establishes a Perl operator mask that disables possibly dangerous Perl language operators. The mask is loaded from a specification in file. Unfortunately, to find out more details, you must look inside the mod_perl and Perl sources, because the operator mask facility is not very well documented. This facility is considered experimental and should be used only by real Perl programmers.