Zabbix Bug Report - https://support.zabbix.com/browse/ZBX-3530

--- class.ctrigger.php.ori  2011-01-04 11:57:52.000000000 -0200
+++ class.ctrigger.php  2011-02-11 16:15:32.195584051 -0200
@@ -869,115 +869,8 @@ Copt::memoryPick();

 // expandDescription
        if(!is_null($options['expandDescription'])){
-// Function compare values {{{
            foreach($result as $tnum => $trigger){
-               preg_match_all('/\$([1-9])/u', $trigger['description'], $numbers);
-               preg_match_all('~{[0-9]+}[+\-\*/<>=#]?[\(]*(?P<val>[+\-0-9]+)[\)]*~u', $trigger['expression'], $matches);
-
-               foreach($numbers[1] as $i){
-                   $rep = isset($matches['val'][$i-1]) ? $matches['val'][$i-1] : '';
-                   $result[$tnum]['description'] = str_replace('$'.($i), $rep, $result[$tnum]['description']);
-               }
-           }
-// }}}
-
-           $functionids = array();
-           $triggers_to_expand_hosts = array();
-           $triggers_to_expand_items = array();
-           $triggers_to_expand_items2 = array();
-           foreach($result as $tnum => $trigger){
-
-               preg_match_all('/{HOSTNAME([1-9]?)}/u', $trigger['description'], $hnums);
-               if(!empty($hnums[1])){
-                   preg_match_all('/{([0-9]+)}/u', $trigger['expression'], $funcs);
-                   $funcs = $funcs[1];
-
-                   foreach($hnums[1] as $fnum){
-                       $fnum = $fnum ? $fnum : 1;
-                       if(isset($funcs[$fnum-1])){
-                           $functionid = $funcs[$fnum-1];
-                           $functionids[$functionid] = $functionid;
-                           $triggers_to_expand_hosts[$trigger['triggerid']][$functionid] = $fnum;
-                       }
-                   }
-               }
-
-               preg_match_all('/{ITEM.LASTVALUE([1-9]?)}/u', $trigger['description'], $inums);
-               if(!empty($inums[1])){
-                   preg_match_all('/{([0-9]+)}/u', $trigger['expression'], $funcs);
-                   $funcs = $funcs[1];
-
-                   foreach($inums[1] as $fnum){
-                       $fnum = $fnum ? $fnum : 1;
-                       if(isset($funcs[$fnum-1])){
-                           $functionid = $funcs[$fnum-1];
-                           $functionids[$functionid] = $functionid;
-                           $triggers_to_expand_items[$trigger['triggerid']][$functionid] = $fnum;
-                       }
-                   }
-               }
-
-               preg_match_all('/{ITEM.VALUE([1-9]?)}/u', $trigger['description'], $inums);
-               if(!empty($inums[1])){
-                   preg_match_all('/{([0-9]+)}/u', $trigger['expression'], $funcs);
-                   $funcs = $funcs[1];
-
-                   foreach($inums[1] as $fnum){
-                       $fnum = $fnum ? $fnum : 1;
-                       if(isset($funcs[$fnum-1])){
-                           $functionid = $funcs[$fnum-1];
-                           $functionids[$functionid] = $functionid;
-                           $triggers_to_expand_items2[$trigger['triggerid']][$functionid] = $fnum;
-                       }
-                   }
-               }
-           }
-
-           if(!empty($functionids)){
-               $sql = 'SELECT DISTINCT f.triggerid, f.functionid, h.host, i.lastvalue'.
-                       ' FROM functions f,items i,hosts h'.
-                       ' WHERE f.itemid=i.itemid'.
-                           ' AND i.hostid=h.hostid'.
-                           ' AND h.status<>'.HOST_STATUS_TEMPLATE.
-                           ' AND '.DBcondition('f.functionid', $functionids);
-               $db_funcs = DBselect($sql);
-               while($func = DBfetch($db_funcs)){
-                   if(isset($triggers_to_expand_hosts[$func['triggerid']][$func['functionid']])){
-
-                       $fnum = $triggers_to_expand_hosts[$func['triggerid']][$func['functionid']];
-                       if($fnum == 1)
-                           $result[$func['triggerid']]['description'] = str_replace('{HOSTNAME}', $func['host'], $result[$func['triggerid']]['description']);
-
-                       $result[$func['triggerid']]['description'] = str_replace('{HOSTNAME'.$fnum.'}', $func['host'], $result[$func['triggerid']]['description']);
-                   }
-
-                   if(isset($triggers_to_expand_items[$func['triggerid']][$func['functionid']])){
-                       $fnum = $triggers_to_expand_items[$func['triggerid']][$func['functionid']];
-                       if($fnum == 1)
-                           $result[$func['triggerid']]['description'] = str_replace('{ITEM.LASTVALUE}', $func['lastvalue'], $result[$func['triggerid']]['description']);
-
-                       $result[$func['triggerid']]['description'] = str_replace('{ITEM.LASTVALUE'.$fnum.'}', $func['lastvalue'], $result[$func['triggerid']]['description']);
-                   }
-
-                   if(isset($triggers_to_expand_items2[$func['triggerid']][$func['functionid']])){
-                       $fnum = $triggers_to_expand_items2[$func['triggerid']][$func['functionid']];
-                       if($fnum == 1)
-                           $result[$func['triggerid']]['description'] = str_replace('{ITEM.VALUE}', $func['lastvalue'], $result[$func['triggerid']]['description']);
-
-                       $result[$func['triggerid']]['description'] = str_replace('{ITEM.VALUE'.$fnum.'}', $func['lastvalue'], $result[$func['triggerid']]['description']);
-                   }
-               }
-           }
-
-           foreach($result as $tnum => $trigger){
-               if($res = preg_match_all('/'.ZBX_PREG_EXPRESSION_USER_MACROS.'/', $trigger['description'], $arr)){
-                   $macros = CUserMacro::getMacros($arr[1], array('triggerid' => $trigger['triggerid']));
-
-                   $search = array_keys($macros);
-                   $values = array_values($macros);
-
-                   $result[$tnum]['description'] = str_replace($search, $values, $trigger['description']);
-               }
+               $result[$tnum]['description'] = expand_trigger_description($trigger['triggerid']);
            }
        }