function RefineChannelFilter($qWhere, $c, $crono, $dbh, $children = "")
{
$ret = "";
if ($crono == 1 && $qWhere != "IN (-1)") {
$query = "SELECT tag_id,tag_group_id FROM tag_x_channel WHERE channel_id={$c}";
$result = mysql_query($query, $dbh);
if (mysql_num_rows($result) > 0) {
$i = 0;
$tags = array();
while ($row = mysql_fetch_array($result, MYSQL_NUM)) {
if ($row[0] >= 0) {
if (!in_array($row[0], $tags)) {
$tags[$i] = $row[0];
$i++;
}
} else {
if ($row[1] >= 0) {
$x = GetTagsInGroup($row[1], $dbh);
for ($j = 0; $j < sizeof($x); $j++) {
if (!in_array($x[$j], $tags)) {
$tags[$i] = $x[$j];
$i++;
}
}
}
}
}
$tWhere = implode(",", $tags);
$tWhere = "IN(" . $tWhere . ")";
if ($children == "") {
$query = "SELECT DISTINCT message.message_id FROM message,tag_x_message WHERE message.message_id = tag_x_message.message_id AND tag_id " . $tWhere;
} else {
$query = "SELECT DISTINCT message.message_id FROM message,tag_x_message WHERE message.channel_id IN (" . $children . ") AND message.message_id = tag_x_message.message_id AND tag_id " . $tWhere;
}
$result = mysql_query($query, $dbh);
if (mysql_num_rows($result) > 0) {
$i = 0;
while ($row = mysql_fetch_array($result, MYSQL_NUM)) {
$messages[$i] = $row[0];
$i++;
}
if ($qWhere == "") {
$ret = "IN(" . implode(",", $messages) . ")";
} else {
str_replace("IN", "", $qWhere);
str_replace("(", "", $qWhere);
str_replace(")", "", $qWhere);
$qWhere = trim($qWhere);
$searched_messages = explode(",", $qWhere);
$result_messages = array();
$j = 0;
for ($i = 0; $i < sizeof($searched_messages); $i++) {
if (in_array($searched_messages[$i], $messages)) {
$result_messages[$j] = $searched_messages[$i];
$j++;
}
}
if (sizeof($result_messages) > 0) {
$ret = "IN(" . implode(",", $result_messages) . ")";
}
}
} else {
if ($qWhere == "") {
$ret = "IN (-1)";
}
}
}
}
return $ret;
}
function GetTagsInChannel($c, $dbh)
{
$ret = array();
$query = "SELECT tag_id,tag_group_id FROM tag_x_channel WHERE channel_id={$c}";
$result = mysql_query($query, $dbh);
$i = 0;
while ($row = mysql_fetch_array($result, MYSQL_NUM)) {
if ($row[0] >= 0) {
if (!in_array($row[0], $ret)) {
$ret[$i] = $row[0];
$i++;
}
} else {
if ($row[1] >= 0) {
$x = GetTagsInGroup($row[1], $dbh);
for ($j = 0; $j < sizeof($x); $j++) {
if (!in_array($x[$j], $ret)) {
$ret[$i] = $x[$j];
$i++;
}
}
}
}
}
return $ret;
}