PHP: How to capture a timeout on a dio_read()?

Question

I am using dio_read in PHP to capture input from a serial device (specifically the USB IR Toy v2 from Dangerous Prototypes).

Sometimes the input from the device is slow (10+ seconds). I'd like to timeout the dio_read, but not sure how.

If someone reading this post knows how, could you help point me in the right direction? thanks.

Answer 1

dio_read on Windows (other platforms unknown) will not timeout if there is no data to read. There is no way to specify a timeout or do a non-blocking read on Windows. http://php.net/dio_read

Answer 2

You can use dio_fctnl() to set the file descriptors flags to O_NONBLOCK or O_ASYNC