WordPress: get_pagination_counts()

get-pagination-counts.php

<?php
/**
 * Gets pagination counts for a query.
 *
 * @param WP_Query $query The query, defaults to global wp_query.
 * @return array
 */
function get_pagination_counts( $query = false ) {
	global $wp_query;

	if ( ! $query instanceof \WP_Query ) {
		$query = $wp_query;
	}

	$results = [
		'found_posts' => 0,
		'start'       => 0,
		'end'         => 0,
	];

	$found_posts        = $query->found_posts;
	$posts_per_page     = $query->query_vars['posts_per_page'];
	$current_page       = $query->query_vars['paged'];

	if ( empty( $current_page ) ) {
		$current_page = 1;
	}

	if ( 1 === $current_page ) {
		$start = 1;
	} else {
		$start = ( ( $current_page - 1 ) * $posts_per_page ) + 1;
	}

	if ( absint( $current_page ) === absint( $query->max_num_pages ) ) {
		$end = $found_posts;
	} else {
		$end = ( $start + $posts_per_page - 1 );
	}

	$results['found_posts'] = $found_posts;
	$results['start']       = $start;
	$results['end']         = $end;

	return $results;
}