This Conditional Tag checks if any type of Archive page is being displayed. An Archive is a Category, Tag, Author, Date, Custom Post Type or Custom Taxonomy based pages. This is a boolean function, meaning it returns either TRUE or FALSE.
<?php is_archive(); ?>
// write your code here ...
is_archive() does not accept any parameters. If you want to check if this is the archive of a custom post type, use is_post_type_archive( $post_type )
is_archive() is located in