mysqli_real_escape_string（）期望参数2为字符串，

Question

我的网站上出现此错误： mysqli_real_escape_string（）期望参数2为字符串，在/home/clients/e511b4b37ae7765d6c8d867c61082084/web/wp-includes/wp-db.php第1165行中给出的数组

wp-include上的代码正确：

enter code here

function _real_escape( $string ) {
        if ( $this->dbh ) {
            if ( $this->use_mysqli ) {
                $escaped = mysqli_real_escape_string( $this->dbh, $string );
            } else {
                $escaped = mysql_real_escape_string( $string, $this->dbh );
            }
        } else {
            $class = get_class( $this );
            if ( function_exists( '__' ) ) {
                /* translators: %s: Database access abstraction class, usually wpdb or a class extending wpdb. */
                _doing_it_wrong( $class, sprintf( __( '%s must set a database connection for use with escaping.' ), $class ), '3.6.0' );
            } else {
                _doing_it_wrong( $class, sprintf( '%s must set a database connection for use with escaping.', $class ), '3.6.0' );
            }
            $escaped = addslashes( $string );
        }

        return $this->add_placeholder_escape( $escaped );
    }

如何解决？ 非常感谢