dbmexists
(PHP 4)
dbmexists — Tells if a value exists for a key in a DBM database
說明
bool dbmexists
( resource $dbm_identifier
, string $key
)
Returns TRUE if there is a value associated with the
key
.
參數
-
dbm_identifier
-
The DBM link identifier,
returned by dbmopen().
-
key
-
The key, as a string
Return值
如果成功則回傳 TRUE,失敗則回傳 FALSE。