Php pages Nested Tables/Images Expires Tag functions

I need to have those php functions. Please include php test call function. // Return status true or false // Does site have Pages that contain HTML tables within other HTML tables function isNestedTables(URL) { $Result = false; ... return $Result; //True or false } // Allows to check if site is using an image expires tag, // which specifies a future expiration date for your images. // see [login to view URL] function isImagesExpiresTag(URL) { $Result = ""; ... return $Result; //True or false }