(PHP 4 >= 4.0.6, PECL yaz >= 0.9.0)
yaz_database — Specifies the databases within a session
$id, string $databases): boolThis function allows you to change databases within a session by specifying one or more databases to be used in search, retrieval, etc. - overriding databases specified in call to yaz_connect().
idThe connection resource returned by yaz_connect().
databases
A string containing one or more databases. Multiple databases are
separated by a plus sign +.
成功時(shí)返回 true， 或者在失敗時(shí)返回 false。