olorton/gist:a00d9c7b46be582d7dd6

## gistfile1.php
<?php

// Your web folder should look like this:
//      /change/index.php   <-- this file
//      /test-123/          <-- The website that you want to test
// Make sure that you have no other files or folders in the root that begin with 'test' (e.g. /testing)
// When you visit /change/ then the test folder will be moved to a new location,
// you will be provided with a link to that new location.
//
// Permissions... The root folder should be writable by the webserver (so it can create new folders), and
// the initial test-123456 directory should also be writable (so that it can delete it).

$rootDir = __DIR__.'/../';
$currentDir = null;

if ($handle = opendir($rootDir)) {
    while (false !== ($entry = readdir($handle))) {
        if (preg_match("/^test/", $entry)) {
            $currentDir = $entry;
        }
    }
    closedir($handle);
}

if ($currentDir !== null && !is_dir($currentDir)) {
    $newDir = 'test-' . substr(md5(time()), 0, 6);
    rename($rootDir.$currentDir, $rootDir.$newDir);
    echo "<html><body><a href='/".$newDir."/'>Current Test</a></body></html>";
} else {
    die('Error, could not create new directory');
}
	<?php

	// Your web folder should look like this:
	// /change/index.php <-- this file
	// /test-123/ <-- The website that you want to test
	// Make sure that you have no other files or folders in the root that begin with 'test' (e.g. /testing)
	// When you visit /change/ then the test folder will be moved to a new location,
	// you will be provided with a link to that new location.
	//
	// Permissions... The root folder should be writable by the webserver (so it can create new folders), and
	// the initial test-123456 directory should also be writable (so that it can delete it).

	$rootDir = __DIR__.'/../';
	$currentDir = null;

	if ($handle = opendir($rootDir)) {
	while (false !== ($entry = readdir($handle))) {
	if (preg_match("/^test/", $entry)) {
	$currentDir = $entry;
	}
	}
	closedir($handle);
	}

	if ($currentDir !== null && !is_dir($currentDir)) {
	$newDir = 'test-' . substr(md5(time()), 0, 6);
	rename($rootDir.$currentDir, $rootDir.$newDir);
	echo "<html><body><a href='/".$newDir."/'>Current Test</a></body></html>";
	} else {
	die('Error, could not create new directory');
	}