Parse error: syntax error, unexpected T_EXIT

<?php 
if(!defined('CORE')) 
 exit(0); 

global $IGroups; 
  
class CGroups 
{ 
 function getSelect($default = 0, $dval = '(none)') 
 { 
  global $Core; 
  $rs = $Core->DB->query('SELECT * FROM groups ORDER BY name ASC'); 
  $content = '<select name="group">'; 
   
  $content .= '<option value="0">'.$dval.'</option>'; 
   
  while($row = $rs->getAssoc()) 
  { 
   $content .= '<option value="'.$row['id'].'"'.($default == $row['id'] ? ' selected="selected"' : '').'>'.$row['name'].'</option>'; 
  } 
   
  $content .= '</select>'; 
   
  return $content; 
 } 
  
 function get($mid) 
 { 
  global $Core; 
  $rs = $Core->DB->query('SELECT * FROM groups WHERE id='.intval($mid).' LIMIT 1'); 
  return ($rs->rowCount() > 0 ? $rs->getAssoc() : false); 
 } 
  
 function getUsersQueryResult($gid) 
 { 
  global $Core; 
  return $Core->DB->query('SELECT * FROM users WHERE gid='.intval($gid).' ORDER BY username ASC'); 
 } 
  
 function delete($gid) 
 { 
  global $Core; 
  $gid = intval($gid); 
  $Core->DB->query('DELETE FROM groups WHERE id='.$gid.' LIMIT 1'); 
  $Core->DB->query('UPDATE users SET gid=0 WHERE gid='.$gid);   
 } 
} 

$IGroups = new CGroups(); 
?>