Lester Caine wrote: > viper wrote: >> is it possible to write and read data on a COM or LPT port? >> is there any function or class in PHP? >> >> anyone has already done something similar? > > Talking in and out of the serial port is not too difficult but is OS > dependent, > so what are you wanting to run on? Most of the time you are just copying > files > in and out, although one can use the control signals as simple I/O if you > only > need a couple of controls. > > Parallel port is a minefield on Windows as access is specifically blocked > in XP > onwards. You need a modified device driver to bypass the blocks windows > puts in. > I've not tried that with PHP as I'm normally accessing the parallel port > direct > from other windows programs. > > Linux is lot easier, and most of the examples you will find via google are > geared towards that. It works like DOS used to :) > There is an example of a serial port on php.net in the fopen function documentation. --C
