Drush

I’m still somewhat new to all the command line stuff, so I can use some help sorting this one out. When I attempt to do a “DRUSH UP” command, I get the following: [warning] Declaration of DrushDrupalDrupalKernel::createFromRequest(SymfonyComponentHttpFoundationRequest $request, $class_loader, $environment, $allow_dumping = true) should be[…]

What is…

I’ve come across something just recently, I’m not sure what it is, and I’m not even sure how to go about “Googling it”.  As I’ve been working to modify some CSS, I’ve come across an image, with a long number following it. For example: url(‘../images/background-img.jpg?1487047946’)[…]