Since websites have to be fully functioning, they need to be tested on tablets/MID's too.
For all the people who have been asking me what php is. Php is a powerful programming language that powers facebook and other "clever" websites. for instance, putting
echo date("D M d Y"). ', sunrise time : ' .date_sunrise(time(), SUNFUNCS_RET_STRING, 53.7, 0.04, 90, 1);
into a website would make the website display the sunrise time for Withernsea every day you go on the page.