PHP: return value from function and echo it directly?

You can use the special tags:

<?= get_info(); ?>

Or, of course, you can have your function echo the value:

function get_info() {
    $something = "test";
    echo $something;
}

Why return when you can echo if you need to?

function 
get_info() {
    $something = "test";
    echo $something;
}