What version of php is recommended with magento 1.9.1.1?
I was running PHP 5.3.29, and ran into problem of Sales>Orders>Order View Information were not getting displayed in admin after the latest SUPEE-7405
! So I upgraded the PHP version to 5.4.45, and it started to display Sales>Orders>Order View Information again.
My cPanel has 5.5.32 and 5.6.18 also available. Is it recommended to upgrade to any of them or not?