# yaz_database

(PHP 4 >= 4.0.6, PECL yaz >= 0.9.0)

yaz_database — Specifies the databases within a session

### 说明

yaz_database ( resource `$id` , string `$databases` ) : bool

This 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().

### 参数

`id`

  The connection resource returned by yaz_connect().

`databases`

  A string containing one or more databases. Multiple databases are separated by a plus sign +.

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。