Here's my script that I use to pull the new data, it's not commented at all but should be easy to understand anyway.
For performance reasons it's set to stop after 20 iterations (so each run it pulls up to 100k records) or when there's no more data available.

header('content-type: text/plain');
$rows_inserted = 1; //zeby wystartowac petle
$num_updates = 0;
while ($rows_inserted > 0 and $num_updates < 20) {
$result = mysql_query("SELECT MAX(id) FROM trickles_lite") OR die(mysql_error());
if (mysql_num_rows($result) == 0) {
$max_id = 0;
}
else {
$wynik = mysql_fetch_row($result);
$max_id = $wynik[0];
}
echo "Last local trickle id: $max_id\n";

$content = file_get_contents("http://radioactiveathome.org/boinc/gettrickledata.php?start=$max_id");
$content_array = explode("\n",$content);
if ($content_array[0] == "NO DATA") die("Remote server returned empty document");
$first_line = explode(":",$content_array[0]);
$remote_min_trickle_id = $first_line[0];
$remote_max_trickle_id = $first_line[1];
$content_size = sizeof($content_array);
echo "$content_size lines of data\n";
echo "Remote data min id: $remote_min_trickle_id, max id: $remote_max_trickle_id\n";
$rows_inserted = 0;
for ($i=1;$i<$content_size;$i++) {
if ($content_array[$i] == "NO DATA") continue;
$line_content = explode(",",$content_array[$i]);
$tdata_id = $line_content[0];
$tdata_hostid = $line_content[1];
$tdata_pomiar_raw = $line_content[2];
$tdata_data = $line_content[3];
$tdata_loc1 = $line_content[4];
$tdata_loc2 = $line_content[5];
$tdata_czas_pomiaru = $line_content[6];
$tdata_typ_pomiaru = $line_content[7];
$tdata_eksperyment = $line_content[8];
$tdata_revision_int = $line_content[9];
$tdata_vid_pid_int = 0; //to be changed later
if ($tdata_id) {
mysql_query("INSERT INTO trickles_lite vALUES($tdata_id,$tdata_hostid, $tdata_pomiar_raw, '$tdata_data', $tdata_loc1, $tdata_loc2, $tdata_czas_pomiaru, '$tdata_typ_pomiaru', $tdata_eksperyment, $tdata_revision_int, $tdata_vid_pid_int)") OR die(mysql_error());
$rows_inserted++;
}
}
echo "$rows_inserted records written to the local db\n";
$num_updates++;
} //while