You cannot disable right click in classic, web based PHP. you may be able to do that in command line/batch PHP though
econd that when open the source it shows NOTHING or something that i want
sorry I haven't got a clue what you are trying to do, or what you are struggling with here.
within PHP you can test for the existence of resources and take appropriate action. I think that test only wokrs on local resources (IE you can test if an image in on the same physcial server, but you cannot test if a remote resources is present, that may well have changed with subsequent releases of PHP)