php serial communication in linux

[Reindl Harald]

Am 30.04.2012 06:57, schrieb prudhvi09:
> When I send a command directly from the terminal using the command : echo 1 >
> /dev/ttyUSB0 it works and '1' is transmitted to the serial port . But using
> php I get the above warnings . I dont understand where the problem is .  Is
> it a permissions issue ? If not what could be the problem ?

if SELinux is active i would not wonder that httpd can not access
the serial port, however - why are you installing a lammp package
under /opt while fedora has all the needed packages in the default repos?

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