Our website was running just fine on a shared web hosting server until yesterday, when we suddenly started receiving the following message on every page:
"The page cannot be displayed because an internal server error has occurred."
We tracked it down to the PHP code failing to check first to see if a SESSION var had been set, by using the isset() function, before we referenced the SESSION var.
The site runs fine on our test server running PHP 5.3.27, but the live web host just upgraded to 5.3.28 and now our site is down since it is full of references to SESSION vars without first checking them via the isset() function.
Question: Is there is a quick and dirty setting we can use on the live site to quickly get our site back up and running again while we go through the tons of code to get all the isset() calls in place?