functions.php

<?php
/**
 * ES_WP_Query functions
 *
 * @package ES_WP_Query
 */

// phpcs:disable WordPressVIPMinimum.Files.IncludingFile.IncludingFile

if ( ! function_exists( 'es_get_posts' ) ) {

	/**
	 * Retrieve list of latest posts or posts matching criteria.
	 *
	 * The defaults are as follows:
	 *     'numberposts' - Default is 5. Total number of posts to retrieve.
	 *     'offset' - Default is 0. See {@link WP_Query::query()} for more.
	 *     'category' - What category to pull the posts from.
	 *     'orderby' - Default is 'date', which orders based on post_date. How to order the posts.
	 *     'order' - Default is 'DESC'. The order to retrieve the posts.
	 *     'include' - See {@link WP_Query::query()} for more.
	 *     'exclude' - See {@link WP_Query::query()} for more.
	 *     'meta_key' - See {@link WP_Query::query()} for more.
	 *     'meta_value' - See {@link WP_Query::query()} for more.
	 *     'post_type' - Default is 'post'. Can be 'page', or 'attachment' to name a few.
	 *     'post_parent' - The parent of the post or post type.
	 *     'post_status' - Default is 'publish'. Post status to retrieve.
	 *
	 * @uses WP_Query::query() See for more default arguments and information.
	 * @uses ES_WP_Query
	 * @link http://codex.wordpress.org/Template_Tags/get_posts
	 *
	 * @param array $args Optional. Overrides defaults.
	 * @return array List of posts.
	 */
	function es_get_posts( $args = null ) {
		$defaults = array(
			'numberposts'      => 5,
			'offset'           => 0,
			'category'         => 0,
			'orderby'          => 'date',
			'order'            => 'DESC',
			'include'          => array(),
			'exclude'          => array(),
			'meta_key'         => '', // phpcs:ignore WordPress.VIP.SlowDBQuery.slow_db_query_meta_key
			'meta_value'       => '', // phpcs:ignore WordPress.VIP.SlowDBQuery.slow_db_query_meta_value
			'post_type'        => 'post',
			'suppress_filters' => true, // phpcs:ignore WordPressVIPMinimum.VIP.WPQueryParams.suppressFiltersTrue
		);

		$r = wp_parse_args( $args, $defaults );
		if ( empty( $r['post_status'] ) ) {
			$r['post_status'] = ( 'attachment' === $r['post_type'] ) ? 'inherit' : 'publish';
		}
		if ( ! empty( $r['numberposts'] ) && empty( $r['posts_per_page'] ) ) {
			$r['posts_per_page'] = $r['numberposts'];
		}
		if ( ! empty( $r['category'] ) ) {
			$r['cat'] = $r['category'];
		}
		if ( ! empty( $r['include'] ) ) {
			$incposts            = wp_parse_id_list( $r['include'] );
			$r['posts_per_page'] = count( $incposts );  // Only the number of posts included.
			$r['post__in']       = $incposts;
		} elseif ( ! empty( $r['exclude'] ) ) {
			$r['post__not_in'] = wp_parse_id_list( $r['exclude'] ); // phpcs:ignore WordPressVIPMinimum.VIP.WPQueryParams.post__not_in
		}

		$r['ignore_sticky_posts'] = true;
		$r['no_found_rows']       = true;

		$get_posts = new ES_WP_Query();
		return $get_posts->query( $r );

	}
}


/**
 * Loads one of the included adapters.
 *
 * @param  string $adapter Which adapter to include. Currently allows searchpress, wpcom-vip, travis, jetpack-search, and vip-search.
 * @return void
 */
function es_wp_query_load_adapter( $adapter ) {
	if ( 'vip-search' === $adapter ) {
		require_once ES_WP_QUERY_PATH . "/adapters/vip-search.php";
	} else {
		_doing_it_wrong( __FUNCTION__, "Search: Only the vip-search adapter is available to use within Enterprise Search!", null );
	}
}