PHP Function to return a friendly domain name from a URL

getdomain.php

/**
*    Function to return friendly domain name (example.com) from a full URL
*    @param string $url
*    @return string 
*/

function getDomain($url){

    // remove the protocol
    $url = str_replace((array("http://", "https://")), "", $url);

    // break up url by slashes
    $urlary = explode("/", $url);

    // count array elements
    $domainary = explode(".", $urlary[0]);

    // return last two elements (domain and TLD)
    return $domainary[(count($domainary) - 2)] . "." . $domainary[(count($domainary) - 1)];

}