diff options
Diffstat (limited to 'lib/util.php')
-rw-r--r-- | lib/util.php | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/lib/util.php b/lib/util.php index 6d2e99b2a..e0457140e 100644 --- a/lib/util.php +++ b/lib/util.php @@ -494,6 +494,29 @@ function common_is_real_login() return common_logged_in() && $_SESSION['real_login']; } +/** + * Get a hash portion for HTTP caching Etags and such including + * info on the current user's session. If login/logout state changes, + * or we've changed accounts, or we've renamed the current user, + * we'll get a new hash value. + * + * This should not be considered secure information. + * + * @param User $user (optional; uses common_current_user() if left out) + * @return string + */ +function common_user_cache_hash($user=false) +{ + if ($user === false) { + $user = common_current_user(); + } + if ($user) { + return crc32($user->id . ':' . $user->nickname); + } else { + return '0'; + } +} + // get canonical version of nickname for comparison function common_canonical_nickname($nickname) { |