Apache Reference: mod_perl, PerlWarn

PerlWarn

Enable Perl Warning Mode
Syntax: PerlWarn on|off
Example: PerlWarn on
Since: Apache 1.2

This directive enables Perl's warning mode on start-up for all scripts that are executed under the control of mod_perl, but especially Apache::==Registry scripts. When this mode is enabled, Perl outputs various diagnostics before executing a program. See the UNIX manual page perldiag(1), which is provided by the Perl package, for details.