Description
bool
dba_exists ( string key, resource handle)
dba_exists() checks whether the specified
key exists in the database specified by
handle.
Key is the key the check is performed for.
Handle is a database handle returned by
dba_open().
dba_exists() returns TRUE or FALSE, if the key is found
or not found, respectively.
See also: dba_fetch(),
dba_delete(), dba_insert(),
and dba_replace().
