textdomain_paging_nav() - custom paging nav

if ( !function_exists( 'textdomain_paging_nav' ) ) {

    function textdomain_paging_nav() {


        if ( is_singular() )
            return;

        global $wp_query;

        /** Stop execution if there's only 1 page */
        if ( $wp_query->max_num_pages <= 1 )
            return;

        $paged   = get_query_var( 'paged' ) ? absint( get_query_var( 'paged' ) ) : 1;
        $max     = intval( $wp_query->max_num_pages );

        /**     Add current page to the array */
        if ( $paged >= 1 )
            $links[] = $paged;

        /**     Add the pages around the current page to the array */
        if ( $paged >= 3 ) {
            $links[] = $paged - 1;
            $links[] = $paged - 2;
        }

        if ( ( $paged + 2 ) <= $max ) {
            $links[] = $paged + 2;
            $links[] = $paged + 1;
        }

        echo '<ul class="pagination justify-content-center">' . "\n";

        /**     Previous Post Link */
        if ( get_previous_posts_link() )
            printf( '<li>%s</li>' . "\n", get_previous_posts_link( '<i class="fa fa-long-arrow-left"></i>' ) );

        /**     Link to first page, plus ellipses if necessary */
        if ( !in_array( 1, $links ) ) {
            $class = 1 == $paged ? ' class="active"' : '';

            printf( '<li%s><a class="page-link" href="%s">%s</a></li>' . "\n", $class, esc_url( get_pagenum_link( 1 ) ), '1' );

            if ( !in_array( 2, $links ) )
                echo '<li>…</li>';
        }

        /**     Link to current page, plus 2 pages in either direction if necessary */
        sort( $links );
        foreach ( (array) $links as $link ) {
            $class = $paged == $link ? ' class="active"' : '';
            printf( '<li%s><a class="page-link" href="%s">%s</a></li>' . "\n", $class, esc_url( get_pagenum_link( $link ) ), $link );
        }

        /**     Link to last page, plus ellipses if necessary */
        if ( !in_array( $max, $links ) ) {
            if ( !in_array( $max - 1, $links ) )
                echo '<li>…</li>' . "\n";

            $class = $paged == $max ? ' class="active"' : '';
            printf( '<li%s><a href="%s" class="page-link">%s</a></li>' . "\n", $class, esc_url( get_pagenum_link( $max ) ), $max );
        }

        /**     Next Post Link */
        if ( get_next_posts_link() )
            printf( '<li>%s</li>' . "\n", get_next_posts_link( '<i class="fa fa-long-arrow-right"></i>' ) );

        echo '</ul>' . "\n";
    }

}