(PECL yaz >= 0.9.0) Prepares for an Extended Service Request

(PHP 4 >= 4.0.1, PECL yaz >= 0.9.0) Wait for Z39.50 requests to complete

(PHP 4 >= 4.0.1, PECL yaz >= 0.9.0) Specifies the preferred record syntax for retrieval

(PHP 4 >= 4.0.1, PECL yaz >= 0.9.0) Returns additional error information

(PHP 4 >= 4.0.6, PECL yaz >= 0.9.0) Specifies the databases within a session

(PHP 4 >= 4.0.1, PECL yaz >= 0.9.0) Close YAZ connection

(PHP 4 >= 4.0.1, PECL yaz >= 0.9.0) Returns a record

(PHP 4 >= 4.2.0, PECL yaz >= 0.9.0) Inspects Extended Services Result

(PECL yaz >= 0.9.0) Returns value of option for connection

(PHP 4 >= 4.0.7, PECL yaz >= 0.9.0) Sets sorting criteria