Fixed loop on invoice fix

@@ -21,7 +21,12 @@ $begin_date = strtotime('March 1');
 date_default_timezone_set($original_timezone);
 
 if (! empty($_POST['do_fix']) && $_POST['do_fix'] == 'y') {
-	$users = $wpdb->get_results("SELECT ID FROM {$wpdb->users} LIMIT 0,1000");
+    $count_result = mysql_query("SELECT COUNT(*) FROM `{$wpdb->users}`", $wpdb->dbh);
+    list($num) = mysql_fetch_row($count_result);
+    $max = 1000;
+
+    for ($ui = 0; $ui < $num; $ui += $max) {
+    	$users = $wpdb->get_results("SELECT ID FROM `{$wpdb->users}` LIMIT {$ui}, {$max}");
     	foreach ($users as $user) {
     		$invoices = get_user_meta($user->ID, 'invoices', TRUE);
     		foreach ($invoices as $invoice_id) {
@@ -59,6 +64,8 @@ if (! empty($_POST['do_fix']) && $_POST['do_fix'] == 'y') {
     			update_post_meta($invoice_id, 'trans_amount', $trans_amount);
     		}
     	}
+        unset($users, $invoices);
+    }
 }
 
 ?>