<?php
namespace Language {
    class Python {
        function exec_stmt($stmt) {
            $command = escapeshellcmd($stmt);
            system("echo $command | python");
        }
            
    }

    class Perl {
        function exec_stmt($stmt) {
            $command = escapeshellcmd($stmt);
            system("echo $command | perl");
        }
    }

    class PHP {
        function exec_stmt($stmt) {
            eval($stmt);
        }
    }
}

$p = new Language::Perl;
$p->exec_stmt("print 'Hello Freaky Deaky World!'");
?>