[3v0]

That code will be for XAM shitty Template Shares.

Nothing wrong in using this one which can be found on TBDEV

function maxsysop () {
global $CURUSER;
// Check Staff Names
$lmaxclass  = 8;
$lsysopnames = array("",); // Case sensitive. Change this (YOUR SYSOP-ADMIN NAMES GOES HERE) (example: array("adminname1","adminname2","adminname3","adminname4","so far")
    if ($CURUSER["class"] >= $lmaxclass)
        if (!in_array($CURUSER["username"], $lsysopnames, true)) { // true for strict comparison
            $msg = "Fake Account Detected: Username: ".$CURUSER["username"]." - UserID: ".$CURUSER["id"]." - UserIP : ".getip();
            write_log($msg);
            stderr("Access Denied!","We come to believe you are using a fake account, therefore we've logged this action!");
        }
// Check Staff IDS            
define ('UC_STAFF', 5); // Minumum Staff Level (4= UC_MODERATOR)
if ($CURUSER['class'] >= UC_STAFF) {
    $allowed_ID = array(); // Change this (YOUR SYSOP-ADMIN IDS GOES HERE) (example: array(1,2,3,4,5))
        if (!in_array((int)$CURUSER['id'], $allowed_ID, true)) { // true for strict comparison
            $msg = "Fake Account Detected: Username: ".$CURUSER["username"]." - UserID: ".$CURUSER["id"]." - UserIP : ".getip();
            write_log($msg);
            stderr("Access Denied!","We come to believe you are using a fake account, therefore we've logged this action!");            
        }        
    }
}