posix_ctermid

(PHP 4, PHP 5, PHP 7, PHP 8)

posix_ctermid — Get path name of controlling terminal

说明

posix_ctermid(): string|false

Generates a string which is the pathname for the current controlling terminal for the process. On error this will set errno, which can be checked using posix_get_last_error()

参数

此函数没有参数。

返回值

Upon successful completion, returns string of the pathname to the current controlling terminal. Otherwise false is returned and errno is set, which can be checked with posix_get_last_error().

示例

示例 #1 posix_ctermid() example

This example will display the path to the current TTY.

<?php
echo "I am running from ".posix_ctermid();
?>

参见

posix_ttyname() - Determine terminal device name
posix_get_last_error() - Retrieve the error number set by the last posix function that failed

add a note

User Contributed Notes 1 note

down

phpmanual at remove dot mark dot griffin dot email ¶

8 years ago


You can write directly to the tty (screen) even when the shell has redirected output, with:

<?php
$h = fopen(posix_ctermid(), "rb+");
fwrite($h, "Testing direct output\n");
fclose($h);
?>

add a note