Hi,
looking at [0], PHP 5.3 is EOL. I suggest that for phpMyAdmin 4.5 we
state that PHP 5.4 is the minimum. Doing so, we would have less testing
to do, and we would help promote using a PHP supported version.
I would even suggest PHP 5.5 as the minimum, because the end of security
support for PHP 5.4 occurs in less than one month.