Eccolo, grazie!

codice:
<?

include("config.inc.php");

$db = mysql_connect($db_host, $db_user, $db_password) or die ('Connessione HOST fallita: ' . mysql_error()); 
mysql_select_db($db_name, $db) or die ('Selezione DB fallita: ' . mysql_error());

$query = "SELECT post_id, post_text FROM forumfanta_posts";
$result = mysql_query($query, $db);
$i=0;

while ($row = mysql_fetch_array($result)) {
        $oldid = $row['post_id'];
        $message = $row['post_text'];
    /* echo di controllo */
        echo "<font color = red>".$i." - ID: ".$oldid."=".$row['post_id']."</font> - Old: ".$message." | ";
        $message = str_replace("\[/COLOR\]", "\[/color\]", $message);
        $message = str_replace('[/SIZE]', '[/size]', $message);
    /* echo di controllo post-mod */
        echo "Messaggio new: ".$message."
";
    /* UPDATE */
	$queryupdate = "UPDATE forumfanta_posts SET post_text = '$message' WHERE post_id = '$oldid'";
	mysql_query($queryupdate, $db);
	$i++;
}

echo "Concluso. Modificati ".$i." posts"; 

?>