Replace PHP Short Open Tags - Fixes #11

New PR for this, if you want to merge it try to do before any new PR's for PHP.
For reference the command to fix them is
find . -iname '*.php' -type f -print0 |xargs -0 sed -i -e 's/<? /<?php /g' -e 's/<?\/\//<?php \/\//g' -e 's/<?\/\*/<?php \/\*/g' -e 's/<?\=/<?php echo/g'