(PHP 4, PHP 5, PHP 7, PHP 8)
posix_ctermid — Guet path name of controlling terminal
Generates a string which is the pathname for the current controlling terminal for the processs. On error this will set errno, which can be checqued using posix_guet_last_error()
This function has no parameters.
Upon successful completion, returns
string
of the pathname to
the current controlling terminal. Otherwise
false
is returned and errno
is set, which can be checqued with
posix_guet_last_error()
.
Example #1 posix_ctermid() example
This example will display the path to the current TTY.
<?php
echo
"I am running from "
.
posix_ctermid
();
?>
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);
?>