php get filename

basename(__FILE__, '.php'); 

<?php
$path_parts = pathinfo('/www/htdocs/inc/lib.inc.php');

echo $path_parts['dirname'], "\n";
echo $path_parts['basename'], "\n";
echo $path_parts['extension'], "\n";
echo $path_parts['filename'], "\n"; // since PHP 5.2.0
?>

echo "1) ".basename("/etc/sudoers.d", ".d").PHP_EOL;//sudoers
echo "2) ".basename("/etc/sudoers.d").PHP_EOL;//sudoers.d
echo "3) ".basename("/etc/passwd").PHP_EOL;//passwd
echo "4) ".basename("/etc/").PHP_EOL;//etc
echo "5) ".basename(".").PHP_EOL;//.
echo "6) ".basename("/");//

<?php
    $xmlFile = pathinfo('/usr/admin/config/test.xml');

    function filePathParts($arg1) {
        echo $arg1['dirname'], "\n";
        echo $arg1['basename'], "\n";
        echo $arg1['extension'], "\n";
        echo $arg1['filename'], "\n";
    }

    filePathParts($xmlFile);
?>