dbmfirstkey
(PHP 4)
dbmfirstkey — Retrieves the first key from a DBM database
설명
string dbmfirstkey
( resource $dbm_identifier
)
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.
반환값
성공할 경우 TRUE를, 실패할 경우 FALSE를 반환합니다.