Why exit() AND exit in these two code snippets?

This function uses exit();

function redirect_cpt_archive() {
    if( is_post_type_archive( 'YOUR-CUSTOM-POST-TYPE' ) ) {
        wp_redirect( home_url( 'YOUR-TRAILING-SLUG' ), 301 );
        exit();
    }
}
add_action( 'template_redirect', 'redirect_cpt_archive' );

This function uses exit – no parentheses

add_action( 'template_redirect', 'redirect_post_type_single' );
function redirect_post_type_single(){
    if ( ! is_singular( 'YOUR-CUSTOM-POST-TYPE' ) )
        return;
    wp_redirect( get_page_link( YOUR-PAGE-ID ), 301 );
    exit;
}

WHY? What’s the difference?

https://www.daddydesign.com/wordpress/how-to-redirect-the-archive-of-a-custom-post-type-in-wordpress/

https://www.daddydesign.com/wordpress/how-to-redirect-all-single-posts-of-a-custom-post-type-in-wordpress/

• This topic was modified 3 years, 8 months ago by TWD.