Extract Scheme and Host from HTTP_REFERER

php, string

Solution

In this example, the best solution would be to use PHP's `parse_url` method. This splits up the URL into an associative array. You would then build your final value by combining the `scheme` with the `host`:

if ( $parts = parse_url( "http://example.com/i/like/turtles.html" ) ) {
    echo $parts[ "scheme" ] . "://" . $parts[ "host" ];
}

Problem

I have `$_SERVER['HTTP_REFERER']` — pretend it is http://example.com/i/like/turtles.html. What would I need to do to get just the `http://example.com` part out of the string, and store it in its own variable?

Original source