Makes a hash case insensitive, and sets some headers. <_> equals <->, so $foo{CONTENT_TYPE} is the same as $foo{'Content-Type'}.
$foo{CONTENT_TYPE}
$foo{'Content-Type'}
tie %somehash, 'PLP::Tie::Headers';
This module is part of the PLP internals and probably not of much use to others.
To install PLP, copy and paste the appropriate command in to your terminal.
cpanm
cpanm PLP
CPAN shell
perl -MCPAN -e shell install PLP
For more information on module installation, please visit the detailed CPAN module installation guide.