problema timestamp e controllo date

[bstefano79]

while($array = pg_fetch_row($result)){ 
        echo $array[0]."
"; 
        echo $oggi."
"; 
        if ($array[0]>$oggi){ 
            $temp = $array[0]; 
            $result2 = pg_query($db,"UPDATE annuncio SET attivo = 'FALSE' WHERE datascad_an = '".$temp."'");
         }elseif ($array[0]<=$oggi){ 
            $result2 = pg_query($db,"UPDATE annuncio SET attivo = 'TRUE' WHERE datascad_an = '".$temp."'");
         }  
}