function currUserHasPerm($perm)
{
    if (isset($_SESSION['id'])) {
        return userHasPerm($_SESSION['id'], $perm);
    }
    return false;
}
<?php

require_once "apiSetup.php";
require_once "../modules/admin/authUtils.php";
?>
<HTML>
<BODY>
<?php 
if (empty($_GET['p'])) {
    echo "<h2>No Permission specified...</h2>";
} else {
    if (empty($_GET['u'])) {
        echo "<h2>No User specified...</h2>";
    } else {
        $user_id = $_GET['u'];
        $permname = $_GET['p'];
        echo "<h2>User DOES" . (userHasPerm($user_id, $permname) ? " " : " NOT ") . "HAVE Permission: " . $permname . " </h2>";
    }
}
?>
</BODY>
</HTML>