function install_verify_completed_task

Verifies and returns the last installation task that was completed.

Return value

string|NULL: The last completed task, if there is one. An exception is thrown if Backdrop is already installed.

Throws

Exception

File

core/includes/install.core.inc, line 855

API functions for installing Backdrop.

Code

function install_verify_completed_task() {
  try {
    if ($result = db_query("SELECT value FROM {state} WHERE name = :name", array('name' => 'install_task'))) {
      $task = unserialize($result->fetchField());
    }
  }
  // Do not trigger an error if the database query fails, since the database
  // might not be set up yet.
  catch (Exception $e) {
  }
  if (isset($task)) {
    if ($task == 'done') {
      throw new Exception(install_already_done_error());
    }
    return $task;
  }

  // No install task found.
  return NULL;
}