Pagination with Offset

offset_pagination.php

<?php
/**
 * Displays numeric pagination with offset.
 *
 * @param array $custom_query Custom WP_Query.
 * @return void
 * @author JC Palmes
 */
function display_numeric_pagination_with_offset( $custom_query ) {

	$big            = 999999999;
	$current_page   = ( get_query_var( 'paged' ) ) ? absint( get_query_var( 'paged' ) ) : 1;
	$current_page   = max( 1, $current_page );
	$posts_per_page = 9;
	$offset_start   = 1;
	$offset         = ( $current_page - 1 ) * $posts_per_page + $offset_start;
	$total_rows     = max( 0, $custom_query->found_posts - $offset_start );
	$total_pages    = ceil( $total_rows / $posts_per_page );

	echo '<div class="pagination-container">';
	echo paginate_links( // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
		array(
			'base'      => str_replace( $big, '%#%', get_pagenum_link( $big ) ),
			'format'    => '?paged=%#%',
			'current'   => $current_page,
			'total'     => $total_pages,
			'prev_text' => '&laquo;',
			'next_text' => '&raquo;',
		)
	);
	echo '</div><!-- .pagination-container -->';
}