Magento Get Current Product ID

How to get current product id in magento. Blow code will display currently loaded product id..

<!-- Magento Current Product Id -->
        <?php $current_product_id = $this->getProduct()->getId(); ?>

If above code not working then try below code..

<!-- Magento Current Product Id -->
<?php 
$current_product_id = Mage::registry('current_product')->getId();
?>

Codeigniter Display Last Query

The following code return the last query that was running in codeigniter.
Sometimes we want to display which query was currently running. For this purpose just echo
the query then it will display the last query that was run.

<!-- Codeigniter last Query -->
   <?php 
    $last_query = $this->db->last_query();
    ?>
<!-- It will produce: SELECT * FROM table WHERE.... -->