Enfold theme live search integration with SearchWP (version 4 and version 3)

searchwp-customizations.php

<?php

// **********************************************************************//
// Enfold Search WP integration                                          */
// **********************************************************************//
add_filter( 'avf_ajax_search_function', 'avia_init_searchwp', 10, 4 );

function avia_init_searchwp( $function_name, $search_query, $search_parameters, $defaults ) {
	$function_name = class_exists( 'SWP_Query' ) ? 'avia_searchwp_search' : $function_name;
	return $function_name;
}

function avia_searchwp_search( $search_query, $search_parameters, $defaults ) {
	$searchwp_query = new SWP_Query( array(
		'engine'         => 'default',
		's'              => isset( $search_parameters['s'] ) ? sanitize_text_field( urldecode( $search_parameters['s'] ) ) : '',
		'posts_per_page' => 5,
		'fields'         => 'ids',
	) );

	if ( ! empty( $searchwp_query->posts ) ) {
		foreach ( $searchwp_query->posts as $key => $result ) {
			$searchwp_query->posts[ $key ] = get_post( $result );
			$searchwp_query->posts[ $key ]->post_excerpt = get_the_excerpt( $result );
		}
	}

	return $searchwp_query->posts;
}