site 3 - function file

<?php
/*
 * Functions file
 * Includes all necesary files
 *
 * @package custom
 */


function register_my_menus() {
  register_nav_menus(
    array(
      'primary-menu' => __( 'Primary Menu' ),
      'secondary-menu' => __( 'Secondary Menu' )
    )
  );
}
add_action( 'init', 'register_my_menus' );


add_theme_support( 'post-thumbnails' );


function pagination($prev = '«', $next = '»') {
        global $wp_query, $wp_rewrite;
        $wp_query->query_vars['paged'] > 1 ? $current = $wp_query->query_vars['paged'] : $current = 1;
        $pagination = array(
            'base' => @add_query_arg('paged','%#%'),
            'format' => '',
            'total' => $wp_query->max_num_pages,
            'current' => $current,
            'prev_text' => __($prev),
            'next_text' => __($next),
            'type' => 'plain'
    );
        if( $wp_rewrite->using_permalinks() )
            $pagination['base'] = user_trailingslashit( trailingslashit( remove_query_arg( 's', get_pagenum_link( 1 ) ) ) . 'page/%#%/', 'paged' );

        if( !empty($wp_query->query_vars['s']) )
            $pagination['add_args'] = array( 's' => get_query_var( 's' ) );

        echo paginate_links( $pagination );
};




/*
    WordPress makes a simple check to see if the number of pages outnumbers that query's posts_per_page property. However, while offset will skip posts in the loop, those skipped posts will still be counted when WordPress decides if there are more pages.
*/

// add_filter('found_posts', 'myprefix_adjust_offset_pagination', 1, 2 );
    function myprefix_adjust_offset_pagination($found_posts, $query) {

        //Define our offset again...
        $offset = 10;

        //Ensure we're modifying the right query object...
        if ( $query->is_posts_page ) {
            //Reduce WordPress's found_posts count by the offset...
            return $found_posts - $offset;
        }
}

?>