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编辑当前文件:/home4/randall/public_html/sl/wp-content/plugins/advanced-woo-search/includes/class-aws-cache.php

<?php

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

if ( ! class_exists( 'AWS_Cache' ) ) :

/**
     * Class for plugin search
     */
    class AWS_Cache {

/**
         * @var AWS_Cache Cache table name
         */
        private $cache_table_name;

/**
         * Return a singleton instance of the current class
         *
         * @return object
         */
        public static function factory() {
            static $instance = false;

if ( ! $instance ) {
                $instance = new self();
                $instance->setup();
            }

return $instance;
        }

/**
         * Constructor
         */
        public function __construct() {}

/**
         * Setup actions and filters for all things settings
         */
        public function setup() {

global $wpdb;

$this->cache_table_name = $wpdb->prefix . AWS_CACHE_TABLE_NAME;

add_action( 'aws_cache_clear', array( $this, 'clear_cache' ) );
            add_action( 'wp_ajax_aws-clear-cache', array( $this, 'clear_cache_ajax' ) );

}

/*
         * Clear cahce ajax hook
         */
        public function clear_cache_ajax() {
            check_ajax_referer( 'aws_admin_ajax_nonce' );
            $this->clear_cache();
        }

/**
         * Get caching option name
         */
        public function get_cache_name( $s ) {

$s = sanitize_text_field( $s );
            $cache_option_name = 'aws_search_term_' . $s;

if ( has_filter('wpml_current_language') ) {
                $current_lang = apply_filters('wpml_current_language', NULL);
                if ( $current_lang ) {
                    $cache_option_name = $cache_option_name . '_' . $current_lang;
                }
            }

if ( is_user_logged_in() ) {
                $user = wp_get_current_user();
                $role = ( array ) $user->roles;
                $user_role = array_values( $role )[0];
                if ( $user_role ) {
                    $cache_option_name = $cache_option_name . '_' . $user_role;
                }
            }

return $cache_option_name;

}

/*
         * Check if cache table exist
         */
        public function is_cache_table_not_exist() {

return AWS()->option_vars->is_cache_table_not_exists();

}

/*
         * Create cache table
         */
        public function create_cache_table() {

global $wpdb;

$charset_collate = $wpdb->get_charset_collate();

$sql = "CREATE TABLE {$this->cache_table_name} (
                      cacheid BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
                      name VARCHAR(100) NOT NULL,
                      value LONGTEXT NOT NULL,
                      PRIMARY KEY (cacheid),
                      KEY name (name)
                ) $charset_collate;";

require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
            dbDelta( $sql );

if ( $wpdb->last_error ) {

if ( strpos( $wpdb->last_error, 'COLLATION' ) !== false ) {
                    $sql = str_replace( " COLLATE $wpdb->collate", '', $sql );
                    dbDelta( $sql );
                }

}

do_action( 'aws_create_cache_table' );

}

/*
         * Insert data into cache table
         */
        public function insert_into_cache_table( $cache_option_name, $result_array ) {

global $wpdb;

$values = $wpdb->prepare(
                "(%s, %s)",
                sanitize_text_field( $cache_option_name ), json_encode( $result_array )
            );

$query  = "INSERT IGNORE INTO {$this->cache_table_name}
				       (`name`, `value`)
                       VALUES $values
            ";

$wpdb->query( $query );

if ( $wpdb->last_error ) {
                if ( $this->is_cache_table_not_exist() ) {
                    $this->create_cache_table();
                }
            }

}

/*
         * Get data from cache table
         */
        public function get_from_cache_table( $cache_option_name ) {

global $wpdb;

$result = '';
            $where = $wpdb->prepare( " name = %s", sanitize_text_field( $cache_option_name ) );

$sql = "SELECT *
                FROM
                    {$this->cache_table_name}
                WHERE
                    {$where}
		    ";

$cache_content = $wpdb->get_results( $sql, ARRAY_A );

if ( ! $wpdb->last_error ) {
                if (!empty($cache_content) && !is_wp_error($cache_content) && is_array($cache_content)) {
                    $result = $cache_content[0]['value'];
                }
            } else {
                if ( $this->is_cache_table_not_exist() ) {
                    $this->create_cache_table();
                }
            }

return $result;

}

/*
         * Clear cached terms
         */
        public function clear_cache() {

global $wpdb;

if ( ! $this->is_cache_table_not_exist() ) {
                
                $terms = "aws_search_term_%";
                $where = $wpdb->prepare( " name LIKE %s", $terms );

$sql = "DELETE FROM {$this->cache_table_name}
                    WHERE {$where}
                        ";

$wpdb->query( $sql );
            
            }
            
        }

}

endif;