dbmexists
(PHP 3, PHP 4, PECL)
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_identifierThe 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。