posix_isatty
(PHP 4, PHP 5)
posix_isatty — Determine if a file descriptor is an interactive terminal
说明
bool posix_isatty ( int $fd )Determines if the file descriptor fd refers to a valid terminal type device.
参数
- fd
-
The file descriptor.
返回值
Returns TRUE if fd is an open descriptor connected to a terminal and FALSE otherwise.
参见
- posix_ttyname() - Determine terminal device name
