<?php
    echo basename( __FILE__ ) ."\n";

	$path_parts = pathinfo( __FILE__ );
	echo '1.'.$path_parts['dirname'], "\n";
	echo '2.'.$path_parts['basename'], "\n";
	echo '3.'.$path_parts['extension'], "\n";
	echo '4.'.$path_parts['filename'], "\n"; // desde o PHP 5.2.0
?>