Resize pseudo tty allocated by php - php

Question

I am trying to develop a web console using php and xterm.js,
I managed to get the pseudo tty allocated and attach it to xterm.js via websocket but I am not able to tell the process what is the size of terminal to make it work correctly with the size, and I couldn't find any documentation for this.
// using react/child-process
$process = new Process('/usr/bin/env bash -l', null, null, [
0 => ['pty', 'r'],
1 => ['pty', 'w'],
2 => ['pty', 'w'],
]);
$process->start($this->loop);

Answer 1

I found out run stty on the allocated devpts will do the tricks
if (isset($this->processes[spl_object_id($conn)])) {
$process = $this->processes[spl_object_id($conn)];
$data = unpack('i3', $raw);
$col = $data[2];
$row = $data[3];
$getstream = (function () {
return $this->stream;
});
$stty = new Process("stty cols $col rows $row", null, null, [
$getstream->call($process->stdin), // ex: /dev/pts/0
$getstream->call($process->stdout),
$getstream->call($process->stderr),
]);
$stty->start($this->loop);
}
alternatively can do this
use React\ChildProcess\Process;
$gettty = escapeshellcmd(PHP_BINARY).' -r "echo posix_ttyname(STDIN).PHP_EOL;"';
$bash = "setsid bash -l"; // setsid is important here
$process = new Process(
"$gettty && $bash",
null, null,
[
['pty', 'r'],
['pty', 'w'],
['pty', 'w'],
]
);
// TODO: read the first line and get the tty path so can run stty on it later.
Here is a simple example:
https://gist.github.com/eslym/d3bd7809681aa9c1eb34913043df9bb6