(PHP 3 >= 3.0.8, PHP 4, PHP 5)

dba_exists -- Check whether key exists

说明

bool dba_exists ( string key, resource handle )

dba_exists() checks whether the specified key exists in the database.

参数

返回值

Returns TRUE if the key exists, FALSE otherwise.

参见

dba_delete()

dba_fetch()

dba_insert()

dba_replace()