Hi everyone,

1- serial port access can be done with php?
2- usb port access can be done with php?
how? Do you have the source code?

Not directly, you would have to write an exec() function or develop a PHP extension.

I guess fopen can be used since serial port is mounted probably to /dev/ttyS0
try the following code

PHP Code:

$fp=fopen('/dev/ttyS0','rw');
//write to serial port
fwrite($fp,'some data');

//read from serial port
$str=fread($fp);

//close stream
fclose($fp); 


Note: you must have root access to be able to use serial port