sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false);
$start = 0;
do
{
// Batch query for group members, call group_user_del
$sql = "SELECT user_id, user_email
FROM {$table_prefix}users
LIMIT $start, 100";
$result = $db->sql_query($sql);
if ($row = $db->sql_fetchrow($result))
{
do
{
$sql = "UPDATE {$table_prefix}users
SET user_email_hash = " . (crc32(strtolower($row['user_email'])) . strlen($row['user_email'])) . '
WHERE user_id = ' . $row['user_id'];
$db->sql_query($sql);
$start++;
}
while ($row = $db->sql_fetchrow($result));
echo "
Batch -> $start\n";
flush();
}
else
{
$start = 0;
}
$db->sql_freeresult($result);
}
while ($start);
echo "Done
\n";