There are a number of modules on CPAN to read configuration files. Config::IniFiles is an example. You could have a section for each language. It even provides a interface to tie to a global:

use Config::IniFiles;
  
tie %GLOBALS, 'Config::IniFiles', ( -file => "/path/configfile.ini" );

print "We have $GLOBALS{$lang}{Parameter}."
   if $GLOBALS{$lang}{Parameter};
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or

use Config::IniFiles;
  
my %ini;
tie %ini, 'Config::IniFiles', ( -file => "/path/configfile.ini" );

%GLOBALS = %{$ini{$lang}};
print "We have $GLOBALS{Parameter}."
   if $GLOBALS{Parameter};
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or you can simply do "filename" to execute its content as if it was in the current file. File filename could contain something like:

$GLOBALS{'strCliDeactivated'} = "Currently not active";
$GLOBALS{'strNotActive'}      = "date has not yet been reached";
$GLOBALS{'strExpired'}        = "date has been reached";
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