$_SERVER is an array containing information lke header, url path. Entries are generated by web servers. It can help.
- making dymamic redirection header location value.
- make dynamic web links as per use
- can provide you value from url dynamically to operate with variables as per requirement.
= $_SERVER[‘HTTP_HOST’]; //
gives host link/ domain name. as per applied
$uri = rtrim(dirname($_SERVER[‘PHP_SELF’]), ‘/\\’); // directory name in between weblink.
$urib = $_SERVER[‘PHP_SELF’]; // all values after domain name so in above dirname function is used to avoid ful value of url link
$extra = ‘page.php’;
// 1) a way of dynamic generation of link by contaction $host value, $ uri value
2) to redirect with header function