Getting the screen resolution using PHP

Question

I need to find the screen resolution of a users screen who visits my website?

Answer 1

You can check it like below:

if(strstr(strtolower($_SERVER['HTTP_USER_AGENT']), 'mobile') || strstr(strtolower($_SERVER['HTTP_USER_AGENT']), 'android')) {
   echo "mobile web browser!";
} else {
echo "web browser!";
}