Get page/post slug in wordpress

get_the_slug.php

<?php
	/*paste this in functions.php*/
	function the_slug() {
		global $post;
		$slug = $post->post_name;
		return $slug; 
	}
	/* --- */
	
	/*call your slug in your page*/
	/*paste this in your page*/
	echo the_slug();
	
?>