Wordpress: Get post slug

functions.php

<?php

// Return post's slug
function the_slug($echo=true) {
	$slug = basename(get_permalink());
	do_action('before_slug', $slug);
	$slug = apply_filters('slug_filter', $slug);
	if( $echo ) echo $slug;
	do_action('after_slug', $slug);
	return $slug;
}