Please wait while we load your page...


Latest Version [8.00202205221] Last Updated [May-22-2022]


PHP Manual [posix_isatty]

Protect Your Website Today

PHP Manual || POSIX Functions

(PHP 4, PHP 5, PHP 7)

posix_isattyDetermine if a file descriptor is an interactive terminal


posix_isatty ( mixed $fd ) : bool

Determines if the file descriptor fd refers to a valid terminal type device.



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

PHP Manual || POSIX Functions