你可以在下面这样的事情中找到

add_shortcode( \'url_path_number\', function ( $atts ) {

    // use an attribute or the current URL
    $a = shortcode_atts( array(
        \'url\' => get_permalink(),
    ), $atts );

    // get the path from the URL
    $path = parse_url($a[\'url\'],PHP_URL_PATH);
    $parts = array_filter(explode(\'/\', $path),function($v) { return $v !== \'\'; });

    // get the last dir of path
    return end($parts); 
} );

[url_path_number]

[url_path_number url="https://example.com/page/c/1"]

add_shortcode( \'url_path_number\', function ( $atts ) {
    $a = shortcode_atts( array(
        \'path\' => $_SERVER[\'REQUEST_URI\'],
    ), $atts );
    $parts = array_filter(explode(\'/\',$a[\'path\']),function($v) { return $v !== \'\'; });
    return end($parts); 
} );