Date e timezone

[rocco.mod]

ciao cosa ne pensate du questa funzione ! il mio server locale e 7200 quindi 2 ore in piu !!!!
cosa ne pensate di questa funzione che controlla lo stato del propio server e imposta il default :

    function GeteDateTime( $dateformat )
{
        global $settings,$RCW ;
       $usertimezone   = $RCW['user']['usertimezone'];
    $servertimezone = $settings['timezone'];
    $localtimezone  = iff( $RCW['user']['usertimezone'], $RCW['user']['usertimezone'],$settings['timezone']  );
    $timeline = time();
    if ( date( "I", $timeline ) == 1 )
    {
     $data_Z  = date("Z");
     switch (trim($data_Z))
      {
     case '-43200': $timeline += $localtimezone  + 43200; break;
     case '-39600': $timeline += $localtimezone  + 39600; break; 
     case '-36000': $timeline += $localtimezone  + 36000; break;
     case '-32400': $timeline += $localtimezone  + 32400; break;
     case '-28800': $timeline += $localtimezone  + 28800; break;
     case '-25200': $timeline += $localtimezone  + 25200; break;
     case '-21600': $timeline += $localtimezone  + 21600; break;
     case '-18000': $timeline += $localtimezone  + 18000; break;
     case '-14400': $timeline += $localtimezone  + 14400; break;
     case '-12600': $timeline += $localtimezone  + 12600; break;
     case '-10800': $timeline += $localtimezone  + 10800; break;
     case '-7200' : $timeline += $localtimezone  + 7200;  break;
     case '-3600' : $timeline += $localtimezone  + 3600;  break;
     case     '0' : $timeline += $localtimezone  + 0;     break;
     case  '3600' : $timeline += $localtimezone  - 1800 ; break;
     case  '7200' : $timeline += $localtimezone  - 3600 ; break;
     case '10800' : $timeline += $localtimezone  - 7200 ; break;
     case '12600' : $timeline += $localtimezone  - 10800; break;
     case '14400' : $timeline += $localtimezone  - 12600; break;
     case '16200' : $timeline += $localtimezone  -14400;  break;
     case '18000' : $timeline += $localtimezone  -16200;  break;
     case '19800' : $timeline += $localtimezone  -18000;  break;
     case '20700' : $timeline += $localtimezone  -19800;  break;
     case '21600' : $timeline += $localtimezone  -20700;  break;
     case '23400' : $timeline += $localtimezone  -21600;  break;
     case '25200' : $timeline += $localtimezone  -23400;  break;
     case '28800' : $timeline += $localtimezone  -25200;  break;
     case '32400' : $timeline += $localtimezone  -28800;  break;
     case '34200' : $timeline += $localtimezone  -32400;  break;
     case '36000' : $timeline += $localtimezone  -34200;  break;
     case '39600' : $timeline += $localtimezone  -36000;  break;
     case '43200' : $timeline += $localtimezone  -39600;  break;
     case '46800' : $timeline += $localtimezone  -43200;  break;
}
     }
    return date($dateformat, $timeline  );
}