optimiser table
http://www.totallyphp.co.uk/scripts/optimize-all-tables-in-a-mysql-database.htm
<?php
dbConnect()
$alltables = mysql_query("SHOW TABLES");
while ($table = mysql_fetch_assoc($alltables))
{
foreach ($table as $db => $tablename)
{
mysql_query("OPTIMIZE TABLE '".$tablename."'")
or die(mysql_error());
}
}
?>