//include_once "WP-ROOT-PATH/wp-config.php";
//include_once "../../../wp-includes/wp-db.php";
//define( \'BLOCK_LOAD\', true );
//require_once( $_SERVER[\'DOCUMENT_ROOT\'] . \'/wordpress/wp-config.php\' );
//require_once( $_SERVER[\'DOCUMENT_ROOT\'] . \'/wordpress/wp-includes/wp-db.php\' );
//$wpdb = new wpdb( DB_USER, DB_PASSWORD, DB_NAME, DB_HOST);
 //i tried all these method to access wp files but gives error//////
class repository{

function save($name,$email,$address1,$address2,$code)
{

    global $wpdb;////this variable is null now 
    $wp_Table_name = $wpdb->prefix.\'conssv12frm\';
    $status = $wpdb->insert( 
                        $wp_Table_name, 
                        array( 
                            "name" => $name, 
                            "email" => $email, 
                            "address1"=> $address1,
                            "address2"=> $address2,
                            "code"=> $code
                        ), 
                        array( 
                            \'%s\', 
                            \'%s\',
                            \'%s\', 
                            \'%s\',
                            \'%d\'
                        ) 
                    );


     $message = $status?"Data has been inserted":"Server Error";
     return new response($status,null,null,$message);

}
}

在这里$wpdp 返回null。我到处都找遍了wp-config.php 和wp-include/wp-admin.php, 访问$wpdb 变量，但它给出了文件未找到的错误。