dbmexists
(PHP 4)
dbmexists — Tells if a value exists for a key in a DBM database
说明
bool dbmexists
( resource $dbm_identifier
, string $key
)
Returns TRUE if there is a value associated with the
key
.
参数
-
dbm_identifier
-
The DBM link identifier,
returned by dbmopen().
-
key
-
The key, as a string
返回值
如果成功则返回 TRUE，失败则返回 FALSE。