Manage your VS Code Remote Tunnel with PHP.

vscode-tunnel.php

<?php

function println($s)
{
	echo "$s\n";
}

function shell_exec_trim($cmd, $nonzero_throw = true)
{
	$lines = array();
	if (exec($cmd, $lines, $code) === false) {
		throw new Exception("exec() failure");
	}
	if ($code !== 0 && $nonzero_throw) {
		throw new Exception("`$cmd` exited with non-zero code: $code");
	}
	return trim(implode("\n", $lines));
}

function pchildren($p)
{
	$t = shell_exec_trim("pgrep -P $p", nonzero_throw: false);
	if (!$t) return array();
	return explode("\n", $t);
}

function pall($p)
{
	if (!$p) return array();
	$ps = array($p);
	foreach (pchildren($p) as $c) {
		array_push($ps, ...pall($c));
	}
	return $ps;
}

function main()
{
	$cmd = "/home/garciat/vscode/code tunnel";

	$pid = shell_exec_trim("pgrep -f '$cmd'", nonzero_throw: false);

	println("<pre>");

	if ($pid) {
		println("Running: $pid");
	} else {
		println("Not running");
	}

	$all_pids = pall($pid);

	foreach ($all_pids as $p) {
		println(shell_exec_trim("ps -o pid=,command= -p $p"));
	}

	if (isset($_GET["kill"])) {
		if (!$pid) {
			exit;
		}
		foreach ($all_pids as $p) {
			println("Killing $p");
			shell_exec_trim("kill -TERM $p");
		}
	} else {
		if ($pid) {
			exit;
		}
		println("Starting");
		shell_exec_trim("$cmd 2>/dev/null >/dev/null &");
	}
}

main();