This script will save your life

drupal-panic.php

#!/usr/bin/php
<?php

if (!isset($argv[1])) {
  $host = '127.0.0.1';
} else {
  $host = $argv[1];
}
$_SERVER['REMOTE_ADDR'] = '127.0.0.1';
$_SERVER['HTTP_HOST'] = $host;
$_SERVER['SCRIPT_NAME'] = '/index.php';

define('DRUPAL_ROOT', __DIR__ . '/../www');
chdir(DRUPAL_ROOT);

require_once DRUPAL_ROOT . '/includes/bootstrap.inc';
require_once DRUPAL_ROOT . '/includes/database/database.inc';
require_once DRUPAL_ROOT . '/includes/cache.inc';
require_once DRUPAL_ROOT . '/includes/file.inc';
require_once DRUPAL_ROOT . '/includes/module.inc';
require_once DRUPAL_ROOT . '/includes/registry.inc';

echo "working in ", conf_path(), "\n";
drupal_environment_initialize();
drupal_settings_initialize();
restore_error_handler();
restore_exception_handler();
_drupal_bootstrap_database();

echo "cache system enable attempt\n";
if (!empty($conf['cache_backends'])) {
  foreach ($conf['cache_backends'] as $include) {
    echo "requiring ", $include, "\n";
    require_once DRUPAL_ROOT . '/' . $include;
  }
}

drupal_bootstrap(DRUPAL_BOOTSTRAP_VARIABLES);

echo "system_rebuild_module_data()\n";
require_once DRUPAL_ROOT . '/includes/common.inc';
require_once DRUPAL_ROOT . '/modules/system/system.module';
drupal_static_reset('system_rebuild_module_data');
system_rebuild_module_data();

echo "_registry_update()\n";
_registry_update();

echo "all done\n";