## Code is to be considered untested.
## This assumes that each *$i* has only one table name and no other characters in it
$mysql_table_path = "Your path to your databases";
$dbname="The name of the database";
$db_extension="The file extension for your database type";
for $i (0 ..$#tables_to_query) {
	$filepath = "$mysql_table_path/$dbname/" . $tables_to_query[$i] .".$db_extension";
	if (-e $filepath) {
	     $sql = "select count(*) from ".$tables_to_query[$i].";";
	     $sth = $dbh->prepare($sql) or die("Could not prepare!" . $dbh->errstr);
	     $sth->execute() or die("Could not execute!" . $dbh->errstr);
	     $total = $sth->fetchrow_array();
	     print "Total $i is $total\n";
     }
}