Become a sponsor for $15/month. Link is sitewide - PR5 homepage, 20+ PR4 pages, 90+ PR3 pages. Email dave[AT]icemelon[D0T]c0m.
(PHP 3, PHP 4, PECL)
Returns the first key in the database. Note that no particular order
is guaranteed since the database may be built using a hash-table,
which doesn't guarantee any ordering.