Scripts to take an Elgg 1.9 site down so that plugins can be added/removed without them being booted

site_lock.php

<?php
/**
 * Place a site in maintenance mode, disable caches, and disable plugin boot.
 */

if (php_sapi_name() !== "cli") {
	exit;
}

require __DIR__ . '/engine/start.php';

if (!is_writable(elgg_get_data_path())) {
	echo "Insufficient write permissions. Try sudo.\n";
	exit;
}

echo "Placing site in maintenance mode.\n";
elgg_save_config('elgg_maintenance_mode', '1', null);

echo "Disabling simplecache.\n";
elgg_disable_simplecache();

echo "Disabling system cache.\n";
elgg_disable_system_cache();

echo "Deleting autoload cache.\n";
_elgg_services()->autoloadManager->deleteCache();

$file = elgg_get_plugins_path() . 'disabled';
echo "Temporarily disabling plugin boot by creating file: mod/disabled\n";
touch($file);
chmod($file, 0666);

site_unlock.php

<?php
/**
 * Re-enable plugin boot, re-enable caches.
 */

if (php_sapi_name() !== "cli") {
	exit;
}

require __DIR__ . '/engine/start.php';

if (!is_writable(elgg_get_data_path())) {
	echo "Insufficient write permissions. Try sudo.\n";
	exit;
}

$file = elgg_get_plugins_path() . 'disabled';
echo "Re-enabling plugin boot by deleting: mod/disabled\n";
unlink($file);

echo "Enabling system cache.\n";
elgg_enable_system_cache();

echo "Enabling simplecache.\n";
elgg_enable_simplecache();

echo "Deleting autoload cache.\n";
_elgg_services()->autoloadManager->deleteCache();

echo "Note: Your site is still in maintenance mode.\n";