posix_ttyname()

(PHP 4, PHP 5, PHP 7)

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

<?php
  var_dump( posix_ttyname(STDOUT) );
?>
returns:
string(10) "/dev/pts/0"
When using pseudo terminal 1 (ie ssh)