title: Magento - get order id from increment id
body: <p>How do you get the <strong>Order Id</strong> from magento <strong>Order Increment Id</strong>?</p>
  
  <p>I can use the following get the product id from SKU:</p>
  
  <pre><code>$product_id = Mage::getModel('catalog/product')-&gt;getIdBySku('ABCD1234');
  </code></pre>
  
  <p>The above example lets me get just the database entity_id of a product without loading everything. I want to achieve the same for order.</p>