POSIX_ISATTY(3) 1 POSIX_ISATTY(3)
posix_isatty - Determine if a file descriptor is an interactive terminal
SYNOPSIS
bool posix_isatty (mixed $fd)
DESCRIPTION
Determines if the file descriptor $fd refers to a valid terminal type device.
PARAMETERS
o $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.
RETURN VALUES
Returns TRUE if $fd is an open descriptor connected to a terminal and FALSE otherwise.
SEE ALSO
posix_ttyname(3).
PHP Documentation Group POSIX_ISATTY(3)
