Use functions in PHP instead of require operations

To reduce repetitive code, it is often necessary to include heade and footer, and the most common operation we use is require or reqire_once code, but we can implement this inclusion in a different way, write a function such as Printheader, as shown below, It seems like a line of code is more troublesome than two lines, but it can do some extra work, such as we want each page to have a different title, we can give this function to pass the parameter (see below).

function Printheader ($title)
{
    require (".. /lib/header.php ");
}

At the same time in the header.php