来自GetResourceModel（）的错误

Question

I am getting the error listed below when the code reaches the line containing

$collection = Mage::getResourceModel(’sales/order_collection’)->addAttributeToSelect(’*’);

Fatal error: Call to a member function addAttributeToSelect() on boolean in....

I got the code from an e-book ""php|architect's Guide to Programming Magento Commerce" by Mark Kimsel.

I want to utilize the Magento data access Classes to get data for CRM and accounting. I need to know more about how Magento works and specifically more about the Class properties and methods and how to call them. I would appreciate suggestions for resources for learning how to do this.??

Kind Regards...

Answer 1

My question was answered via a comment. Thank you Mladen Ilic, My apostrophes do seem to be backticks. And I did copy and paste from a .pdf.