redProducts = array();
                $i = 0;
                foreach ( $products as $post ) {
                    
                    if ( $remote ) {
                        $orderedProducts[$i] = new \stdClass();
                        $orderedProducts[$i]->ID = $post->ID;
                    } else {
                        $orderedProducts[$i] = $post;
                    }
                    
                    $score = Helpers::calcScore( $keyword, $post->post_title );
                    $orderedProducts[$i]->score = apply_filters(
                        'dgwt/wcas/search_results/product/score',
                        $score,
                        $keyword,
                        $post->ID,
                        $post
                    );
                    $i++;
                }
                // Sort by relevance
                usort( $orderedProducts, array( 'DgoraWcas\\Helpers', 'cmpSimilarity' ) );
                // Response for remote requests
                
                if ( $remote ) {
                    $output['suggestions'] = $orderedProducts;
                    $output['time'] = number_format(
                        microtime( true ) - $start,
                        2,
                        '.',
                        ''
                    ) . ' sec';
                    $result = apply_filters( 'dgwt/wcas/page_search_results/output', $output );
                    
                    if ( $return ) {
                        return $result;
                    } else {
                        echo  json_encode( $result ) ;
                        die;
                    }
                
                }
                
                $relevantProducts = array();
                $productsSlots = ( $this->flexibleLimits ? $this->totalLimit : $this->groups['product']['limit'] );
                foreach ( $orderedProducts as $post ) {
                    $product = new Product( $post );
                    if ( !$product->isCorrect() ) {
                        continue;
                    }
                    // Strip <script> and <style> tags along with their contents.
                    $value = preg_replace( '@<(script|style)[^>]*?>.*?</\\1>@si', '', $product->getName() );
                    // Strip remaining tags except those indicated.
                    $value = html_entity_decode( wp_kses( $value, array(
                        'b'      => array(
                        'class' => true,
                    ),
                        'br'     => array(),
                        'span'   => array(
                        'class' => true,
                    ),
                        'strong' => array(
                        'class' => true,
                    ),
                        'sub'    => array(),
                        'sup'    => array(),
                    ) ) );
                    $r = array(
                        'post_id' => $product->getID(),
                        'value'   => $value,
                        'url'     => $product->getPermalink(),
                        'type'    => 'product',
                    );
                    // Get thumb HTML
                    if ( DGWT_WCAS()->settings->getOption( 'show_product_image' ) === 'on' ) {
                        $r['thumb_html'] = $product->getThumbnail();
                    }
                    // Get price
                    if ( DGWT_WCAS()->settings->getOption( 'show_product_price' ) === 'on' ) {
                        $r['price'] = $product->getPriceHTML();
                    }
                    // Get description
                    
                    if ( DGWT_WCAS()->settings->getOption( 'show_product_desc' ) === 'on' ) {
                        $wordsLimit = 0;
                        if ( DGWT_WCAS()->settings->getOption( 'show_details_box' ) === 'on' ) {
                            $wordsLimit = 15;
                        }
                        $r['desc'] = $product->getDescription( 'suggestions', $wordsLimit );
                    }
                    
                    // Get SKU
                    if ( DGWT_WCAS()->settings->getOption( 'show_product_sku' ) === 'on' ) {
                        $r['sku'] = $product->getSKU();
                    }
                    // Is on sale
                    //					if ( DGWT_WCAS()->settings->getOption( 'show_sale_badge' ) === 'on' ) {
                    //						$r[ 'on_sale' ] = $product->is_on_sale();
                    //					}
                    // Is featured
                    //					if ( DGWT_WCAS()->settings->getOption( 'show_featured_badge' ) === 'on' ) {
                    //						$r[ 'featured' ] = $product->is_featured();
                    //					}
                    $relevantProducts[] = apply_filters( 'dgwt/wcas/search_results/products', $r, $product );
                    $productsSlots--;
                    if ( $productsSlots === 0 ) {
                        break;
                    }
                }
            }
            
            wp_reset_postdata();
        }
        
        /* END SEARCH IN PRODUCTS */
        if ( !empty($relevantProducts) ) {
            $this->groups['product']['results'] = $relevantProducts;
        }
        
        if ( $this->hasResutls() ) {
            if ( $this->flexibleLimits ) {
                $this->applyFlexibleLimits();
            }
            $results = $this->convertGroupsToSuggestions();
            // Show more
            if ( !empty($this->groups['product']['results']) && count( $this->groups['product']['results'] ) < $totalProducts ) {
                $results[] = array(
                    'value' => '',
                    'total' => $totalProducts,
                    'url'   => add_query_arg( array(
                    's'         => $keyword,
                    'post_type' => 'product',
                    'dgwt_wcas' => '1',
                ), home_url() ),
                    'type'  => 'more_products',
                );
            }
        } else {
            
            if ( $remote ) {
                $emptyResult = new \stdClass();
                $emptyResult->ID = 0;
                $results[] = $emptyResult;
            } else {
                $results[] = array(
                    'value' => '',
                    'type'  => 'no-results',
                );
            }
        
        }
        
        $output['suggestions'] = $results;
        $output['total'] = $totalProducts;
        $output['time'] = number_format(
            microtime( true ) - $start,
            2,
            '.',
            ''
        ) . ' sec';
        $output['engine'] = 'free';
        $output['v'] = DGWT_WCAS_VERSION;
        $result = apply_filters( 'dgwt/wcas/search_results/output', $output );
        
        if ( $return ) {
            return $result;
        } else {
            echo  json_encode( $result ) ;
            die;
        }
    
    }
    
    /**
     * Get meta query
     * For WooCommerce < 3.0
     *
     * return array
     */
    private function getMetaQuery()
    {
        $meta_query = array(
            'relation' => 'AND',
            1          => array(
            'key'     => '_visibility',
            'value'   => array( 'search', 'visible' ),
            'compare' => 'IN',
        ),
            2          => array(
            'relation' => 'OR',
            array(
            'key'     => '_visibility',
            'value'   => array( 'search', 'visible' ),
            'compare' => 'IN',
        ),
        ),
        );
        // Exclude out of stock products from suggestions
        if ( DGWT_WCAS()->settings->getOption( 'exclude_out_of_stock' ) === 'on' ) {
            $meta_query[] = array(
                'key'     => '_stock_status',
                'value'   => 'outofstock',
                'compare' => 'NOT IN',
            );
        }
        return $meta_query;
    }
    
    /**
     * Get tax query
     * For WooCommerce >= 3.0
     *
     * return array
     */
    private function getTaxQuery()
    {
        $product_visibility_term_ids = wc_get_product_visibility_term_ids();
        $tax_query = array(
            'relation' => 'AND',
        );
        $tax_query[] = array(
            'taxonomy' => 'product_visibility',
            'field'    => 'term_taxonomy_id',
            'terms'    => $product_visibility_term_ids['exclude-from-search'],
            'operator' => 'NOT IN',
        );
        // Exclude out of stock products from suggestions
        if ( DGWT_WCAS()->settings->getOption( 'exclude_out_of_stock' ) === 'on' ) {
            $tax_query[] = array(
                'taxonomy' => 'product_visibility',
                'field'    => 'term_taxonomy_id',
                'terms'    => $product_visibility_term_ids['outofstock'],
                'operator' => 'NOT IN',
            );
        }
        return $tax_query;
    }
    
    /**
     * Search for matching category
     *
     * @param string $keyword
     * @param int $limit
     *
     * @return array
     */
    public function getCategories( $keyword, $limit = 3 )
    {
        $results = array();
        $args = array(
            'taxonomy' => 'product_cat',
        );
        $productCategories = get_terms( 'product_cat', apply_filters( 'dgwt/wcas/search/product_cat/args', $args ) );
        $keywordUnslashed = wp_unslash( $keyword );
        // Compare keyword and term name
        $i = 0;
        foreach ( $productCategories as $cat ) {
            
            if ( $i < $limit ) {
                $catName = html_entity_decode( $cat->name );
                $pos = strpos( mb_strtolower( $catName ), mb_strtolower( $keywordUnslashed ) );
                
                if ( $pos !== false ) {
                    $termLang = Multilingual::getTermLang( $cat->term_id, 'product_cat' );
                    $results[$i] = array(
                        'term_id'     => $cat->term_id,
                        'taxonomy'    => 'product_cat',
                        'value'       => $catName,
                        'url'         => get_term_link( $cat, 'product_cat' ),
                        'breadcrumbs' => Helpers::getTermBreadcrumbs(
                        $cat->term_id,
                        'product_cat',
                        array(),
                        $termLang,
                        array( $cat->term_id )
                    ),
                        'type'        => 'taxonomy',
                    );
                    // Fix: Remove last separator
                    if ( !empty($results[$i]['breadcrumbs']) ) {
                        $results[$i]['breadcrumbs'] = mb_substr( $results[$i]['breadcrumbs'], 0, -3 );
                    }
                    $i++;
                }
            
            }
        
        }
        return $results;
    }
    
    /**
     * Extend research in the Woo tags
     *
     * @param strong $keyword
     * @param int $limit
     *
     * @return array
     */
    public function getTags( $keyword, $limit = 3 )
    {
        $results = array();
        $args = array(
            'taxonomy' => 'product_tag',
        );
        $productTags = get_terms( 'product_tag', apply_filters( 'dgwt/wcas/search/product_tag/args', $args ) );
        $keywordUnslashed = wp_unslash( $keyword );
        // Compare keyword and term name
        $i = 0;
        foreach ( $productTags as $tag ) {
            
            if ( $i < $limit ) {
                $tagName = html_entity_decode( $tag->name );
                $pos = strpos( mb_strtolower( $tagName ), mb_strtolower( $keywordUnslashed ) );
                
                if ( $pos !== false ) {
                    $results[$i] = array(
                        'term_id'  => $tag->term_id,
                        'taxonomy' => 'product_tag',
                        'value'    => $tagName,
                        'url'      => get_term_link( $tag, 'product_tag' ),
                        'parents'  => '',
                        'type'     => 'taxonomy',
                    );
                    $i++;
                }
            
            }
        
        }
        return $results;
    }
    
    /**
     * Search in extra fields
     *
     * @param string $search SQL
     *
     * @return string prepared SQL
     */
    public function searchFilters( $search, $wp_query )
    {
        global  $wpdb ;
        
        if ( empty($search) ) {
            return $search;
            // skip processing - there is no keyword
        }
        
        
        if ( $this->isAjaxSearch() ) {
            $q = $wp_query->query_vars;
            
            if ( $q['post_type'] !== 'product' ) {
                return $search;
                // skip processing
            }
            
            $n = ( !empty($q['exact']) ? '' : '%' );
            $search = $searchand = '';
            if ( !empty($q['search_terms']) ) {
                foreach ( (array) $q['search_terms'] as $term ) {
                    $like = $n . $wpdb->esc_like( $term ) . $n;
                    $search .= "{$searchand} (";
                    // Search in title
                    
                    if ( in_array( 'title', $this->searchIn ) ) {
                        $search .= $wpdb->prepare( "({$wpdb->posts}.post_title LIKE %s)", $like );
                    } else {
                        $search .= "(0 = 1)";
                    }
                    
                    // Search in content
                    if ( DGWT_WCAS()->settings->getOption( 'search_in_product_content' ) === 'on' && in_array( 'content', $this->searchIn ) ) {
                        $search .= $wpdb->prepare( " OR ({$wpdb->posts}.post_content LIKE %s)", $like );
                    }
                    // Search in excerpt
                    if ( DGWT_WCAS()->settings->getOption( 'search_in_product_excerpt' ) === 'on' && in_array( 'excerpt', $this->searchIn ) ) {
                        $search .= $wpdb->prepare( " OR ({$wpdb->posts}.post_excerpt LIKE %s)", $like );
                    }
                    // Search in SKU
                    if ( DGWT_WCAS()->settings->getOption( 'search_in_product_sku' ) === 'on' && in_array( 'sku', $this->searchIn ) ) {
                        $search .= $wpdb->prepare( " OR (dgwt_wcasmsku.meta_key='_sku' AND dgwt_wcasmsku.meta_value LIKE %s)", $like );
                    }
                    $search .= ")";
                    $searchand = ' AND ';
                }
            }
            
            if ( !empty($search) ) {
                $search = " AND ({$search}) ";
                if ( !is_user_logged_in() ) {
                    $search .= " AND ({$wpdb->posts}.post_password = '') ";
                }
            }
        
        }
        
        return $search;
    }
    
    /**
     * @param $where
     *
     * @return string
     */
    public function searchDistinct( $where )
    {
        if ( $this->isAjaxSearch() ) {
            return 'DISTINCT';
        }
        return $where;
    }
    
    /**
     * Join the postmeta column in the search posts SQL
     */
    public function searchFiltersJoin( $join, $query )
    {
        global  $wpdb ;
        
        if ( empty($query->query_vars['post_type']) || $query->query_vars['post_type'] !== 'product' ) {
            return $join;
            // skip processing
        }
        
        if ( $this->isAjaxSearch() ) {
            if ( DGWT_WCAS()->settings->getOption( 'search_in_product_sku' ) === 'on' && in_array( 'sku', $this->searchIn ) ) {
                $join .= " INNER JOIN {$wpdb->postmeta} AS dgwt_wcasmsku ON ( {$wpdb->posts}.ID = dgwt_wcasmsku.post_id )";
            }
        }
        return $join;
    }
    
    /**
     * Corrects the search by excerpt if necessary.
     * WooCommerce adds search in excerpt by defaults and this should be corrected.
     *
     * @param string $where
     *
     * @return string
     * @since 1.1.4
     *
     */
    public function fixWooExcerptSearch( $where )
    {
        global  $wp_the_query ;
        // If this is not a WC Query, do not modify the query
        if ( empty($wp_the_query->query_vars['wc_query']) || empty($wp_the_query->query_vars['s']) ) {
            return $where;
        }
        if ( DGWT_WCAS()->settings->getOption( 'search_in_product_excerpt' ) !== 'on' && in_array( 'excerpt', $this->searchIn ) ) {
            $where = preg_replace( "/OR \\(post_excerpt\\s+LIKE\\s*(\\'\\%[^\\%]+\\%\\')\\)/", "", $where );
        }
        return $where;
    }
    
    /**
     * Disable cache results and narrowing search results to those from our engine
     *
     * @param \WP_Query $query
     */
    public function overwriteSearchPage( $query )
    {
        if ( !Helpers::isSearchQuery( $query ) ) {
            return;
        }
        if ( $this->hooked ) {
            return;
        }
        $this->hooked = true;
        /**
         * Disable cache: `cache_results` defaults to false but can be enabled
         */
        $query->set( 'cache_results', false );
        if ( !empty($query->query['cache_results']) ) {
            $query->set( 'cache_results', true );
        }
        $query->set( 'dgwt_wcas', $query->query_vars['s'] );
        $phrase = $query->query_vars['s'];
        $orderby = 'post__in';
        $order = 'desc';
        if ( !empty($query->query_vars['orderby']) ) {
            $orderby = ( $query->query_vars['orderby'] === 'relevance' ? 'post__in' : $query->query_vars['orderby'] );
        }
        if ( !empty($query->query_vars['order']) ) {
            $order = strtolower( $query->query_vars['order'] );
        }
        $postIn = array();
        $searchResults = $this->getSearchResults( $phrase, true, 'all-results' );
        foreach ( $searchResults['suggestions'] as $suggestion ) {
            $postIn[] = $suggestion->ID;
        }
        // Save for later use
        $this->postsIDsBuffer = $postIn;
        $query->set( 'orderby', $orderby );
        $query->set( 'order', $order );
        $query->set( 'post__in', $postIn );
        // Resetting the key 's' to disable the default search logic.
        $query->set( 's', '' );
    }
    
    /**
     * Check if is ajax search processing
     *
     * @return bool
     * @since 1.1.3
     *
     */
    public function isAjaxSearch()
    {
        if ( defined( 'DGWT_WCAS_AJAX' ) && DGWT_WCAS_AJAX ) {
            return true;
        }
        return false;
    }
    
    /**
     * Headline output structure
     *
     * @return array
     */
    public function headlineBody( $headline )
    {
        return array(
            'value' => $headline,
            'type'  => 'headline',
        );
    }
    
    /**
     * Check if the query retuns resutls
     *
     * @return bool
     */
    public function hasResutls()
    {
        $hasResutls = false;
        foreach ( $this->groups as $group ) {
            
            if ( !empty($group['results']) ) {
                $hasResutls = true;
                break;
            }
        
        }
        return $hasResutls;
    }
    
    /**
     * Calc free slots
     *
     * @return int
     */
    public function calcFreeSlots()
    {
        $slots = 0;
        foreach ( $this->groups as $key => $group ) {
            if ( !empty($group['limit']) ) {
                $slots = $slots + absint( $group['limit'] );
            }
        }
        return $slots;
    }
    
    /**
     * Apply flexible limits
     *
     * @return void
     */
    public function applyFlexibleLimits()
    {
        $slots = $this->totalLimit;
        $total = 0;
        $groups = 0;
        foreach ( $this->groups as $key => $group ) {
            
            if ( !empty($this->groups[$key]['results']) ) {
                $total = $total + count( $this->groups[$key]['results'] );
                $groups++;
            }
        
        }
        $toRemove = ( $total >= $slots ? $total - $slots : 0 );
        if ( $toRemove > 0 ) {
            for ( $i = 0 ;  $i < $toRemove ;  $i++ ) {
                $largestGroupCount = 0;
                $largestGroupKey = 'product';
                foreach ( $this->groups as $key => $group ) {
                    
                    if ( !empty($this->groups[$key]['results']) ) {
                        $thisGroupTotal = count( $this->groups[$key]['results'] );
                        
                        if ( $thisGroupTotal > $largestGroupCount ) {
                            $largestGroupCount = $thisGroupTotal;
                            $largestGroupKey = $key;
                        }
                    
                    }
                
                }
                $last = count( $this->groups[$largestGroupKey]['results'] ) - 1;
                if ( isset( $this->groups[$largestGroupKey]['results'][$last] ) ) {
                    unset( $this->groups[$largestGroupKey]['results'][$last] );
                }
            }
        }
    }
    
    /**
     * Prepare suggestions based on groups
     *
     * @return array
     */
    public function convertGroupsToSuggestions()
    {
        $suggestions = array();
        $totalHeadlines = 0;
        foreach ( $this->groups as $key => $group ) {
            
            if ( !empty($group['results']) ) {
                
                if ( $this->showHeadings ) {
                    $suggestions[] = $this->headlineBody( $key );
                    $totalHeadlines++;
                }
                
                foreach ( $group['results'] as $result ) {
                    $suggestions[] = $result;
                }
            }
        
        }
        // Remove products headline when there are only product type suggestion
        
        if ( $totalHeadlines === 1 ) {
            $i = 0;
            $unset = false;
            foreach ( $suggestions as $key => $suggestion ) {
                
                if ( !empty($suggestion['type']) && $suggestion['type'] === 'headline' && $suggestion['value'] === 'product' ) {
                    unset( $suggestions[$i] );
                    $unset = true;
                    break;
                }
                
                $i++;
            }
            if ( $unset ) {
                $suggestions = array_values( $suggestions );
            }
        }
        
        return $suggestions;
    }
    
    /**
     * Order of the search resutls groups
     *
     * @return array
     */
    public function searchResultsGroups()
    {
        $groups = array();
        if ( DGWT_WCAS()->settings->getOption( 'show_product_tax_product_cat' ) === 'on' ) {
            $groups['tax_product_cat'] = array(
                'limit' => 3,
            );
        }
        if ( DGWT_WCAS()->settings->getOption( 'show_product_tax_product_tag' ) === 'on' ) {
            $groups['tax_product_tag'] = array(
                'limit' => 3,
            );
        }
        $groups['product'] = array(
            'limit' => 7,
        );
        return apply_filters( 'dgwt/wcas/search_groups', $groups );
    }
    
    /**
     * Allow to get the ID of products that have been found
     *
     * @param integer[] $postsIDs
     *
     * @return mixed
     */
    public function getProductIds( $postsIDs )
    {
        if ( $this->postsIDsBuffer !== null ) {
            return $this->postsIDsBuffer;
        }
        return $postsIDs;
    }
    
    /**
     * Add taxonomies labels
     *
     * @param array $labels Labels used at frontend
     *
     * @return array
     */
    public function setTaxonomiesLabels( $labels )
    {
        $labels['tax_product_cat_plu'] = __( 'Categories', 'woocommerce' );
        $labels['tax_product_cat'] = __( 'Category', 'woocommerce' );
        $labels['tax_product_tag_plu'] = __( 'Tags' );
        $labels['tax_product_tag'] = __( 'Tag' );
        return $labels;
    }
    
    /**
     * Backward compatibility for labels
     *
     * Full taxonomy names for categories and tags. All with prefix 'tax_'.
     *
     * @param array $labels Labels used at frontend
     *
     * @return array
     */
    public function fixTaxonomiesLabels( $labels )
    {
        // Product category. Old: 'category', 'product_cat_plu'.
        
        if ( isset( $labels['category'] ) ) {
            $labels['tax_product_cat'] = $labels['category'];
            unset( $labels['category'] );
        }
        
        
        if ( isset( $labels['product_cat_plu'] ) ) {
            $labels['tax_product_cat_plu'] = $labels['product_cat_plu'];
            unset( $labels['product_cat_plu'] );
        }
        
        // Product tag. Old: 'tag', 'product_tag_plu'.
        
        if ( isset( $labels['tag'] ) ) {
            $labels['tax_product_tag'] = $labels['tag'];
            unset( $labels['tag'] );
        }
        
        
        if ( isset( $labels['product_tag_plu'] ) ) {
            $labels['tax_product_tag_plu'] = $labels['product_tag_plu'];
            unset( $labels['product_tag_plu'] );
        }
        
        return $labels;
    }
    
    /**
     * Add language to WC endpoint if Polylang is active
     *
     * @param $url
     * @param $request
     *
     * @return string
     * @see polylang-wc/frontend/frontend.php:306
     */
    public function fixPolylangWooEndpoint( $url, $request )
    {
        
        if ( PLL() instanceof \PLL_Frontend ) {
            // Remove wc-ajax to avoid the value %%endpoint%% to be encoded by add_query_arg (used in plain permalinks).
            $url = remove_query_arg( 'wc-ajax', $url );
            $url = PLL()->links_model->switch_language_in_link( $url, PLL()->curlang );
            return add_query_arg( 'wc-ajax', $request, $url );
        }
        
        return $url;
    }

}<br />
<b>Fatal error</b>:  Uncaught Error: Class 'DgoraWcas\Engines\WordPressNative\Search' not found in /home/arasetne/public_html/wp-content/plugins/ajax-search-for-woocommerce/ajax-search-for-woocommerce.php:76
Stack trace:
#0 /home/arasetne/public_html/wp-content/plugins/ajax-search-for-woocommerce/ajax-search-for-woocommerce.php(379): DGWT_WC_Ajax_Search::getInstance()
#1 /home/arasetne/public_html/wp-includes/class-wp-hook.php(324): DGWT_WCAS('')
#2 /home/arasetne/public_html/wp-includes/class-wp-hook.php(348): WP_Hook-&gt;apply_filters(NULL, Array)
#3 /home/arasetne/public_html/wp-includes/plugin.php(517): WP_Hook-&gt;do_action(Array)
#4 /home/arasetne/public_html/wp-settings.php(550): do_action('plugins_loaded')
#5 /home/arasetne/public_html/wp-config.php(188): require_once('/home/arasetne/...')
#6 /home/arasetne/public_html/wp-load.php(50): require_once('/home/arasetne/...')
#7 /home/arasetne/public_html/wp-blog-header.php(13): require_once('/home/arasetne/...')
#8 /home/arasetne/public_html/index.php(17): require('/home/arasetne/.. in <b>/home/arasetne/public_html/wp-content/plugins/ajax-search-for-woocommerce/ajax-search-for-woocommerce.php</b> on line <b>76</b><br />