Get last part of a typical URL string (lowercase string separated by "-")

get_last_part.function.js

function get_last_part(string) {
    return string.indexOf("-")<0?"":string.slice(string.lastIndexOf("-")+1);
}

get_last_part.function.php

<?php

/**
 * Get last part of a typical URL string (lowercase string separated by "-").
 * Example: my-blog-article-12345 => 12345
 * (change "-" with a dot, and you could extract a filename's extension...)
 * @param $string
 * @return string
 */
function get_last_part($string) {
	return substr(strrchr($string,'-'),1);
}