posix_ttyname

(PHP 4, PHP 5, PHP 7)

posix_ttyname — Determine terminal device name

说明

posix_ttyname ( mixed $fd ) : string

Returns a string for the absolute path to the current terminal device that is open on the file descriptor fd.

参数

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.

返回值

On success, returns a string of the absolute path of the fd. On failure, returns FALSE

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