I made some changes to the file
However those changes are not reflecting in
includes/src/__checkout.php in the
Mage_Checkout_Model_Observer class.(After flushing all the magento caches)
In fact, I put some obvious errors in the
app/code/core/Mage/Checkout/Model/Observer.php file (removed the closing bracket of the class), still did not get any error anywhere from the website.
Why is magento ignoring changes I make to a php file?