// used for $current_home = 'current';

$group1 = array(

        'home'  => True,

        );

​

// used for $current_users = 'current';

$group2 = array(

        'users.online'      => True,

        'users.location'    => True,

        'users.featured'    => True,

        'users.new'         => True,

        'users.browse'      => True,

        'users.search'      => True,

        'users.staff'       => True,

        );

​

// used for $current_forum = 'current';

$group3 = array(

        'forum'     => True,

        );

​

if(isset($group1[$p]))

    $current_home = 'current';

else if(isset($group2[$p]))

    $current_users = 'current';

else if(isset($group3[$p]))

    $current_forum = 'current';

else

    user_error("\$p is invalid", E_USER_ERROR);

<?php

switch ($i) {

    case 0:

    case 1:

    case 2:

        echo "i is less than 3 but not negative";

        break;

    case 3:

        echo "i is 3";

}

?>