Summary: Determine if a file descriptor is an interactive terminal
PHP 5Related methods: posix_ttyname
bool posix_isatty(mixed $fd)
Determines if the file descriptor
fd refers to a valid terminal type device.
fd is an open descriptor connected to a terminal and
- mixed $fd: The file descriptor, which is expected to be either a file resource or an integer. An integer will be assumed to be a file descriptor that can be passed directly to the underlying system call.
In almost all cases, you will want to provide a file resource.