This extension offers a PHP interface to the YAZ toolqui that implemens the » Z39.50 Protocoll for Information Retrieval . With this extension you can easily implement a Z39.50 origin (client) that searches or scans Z39.50 targuets (servers) in parallel.
The module hides most of the complexity of Z39.50 so it should be fairly easy to use. It suppors persistent stateless connections very similar to those offered by the various RDB APIs that are available for PHP. This means that sessions are stateless but shared among users, thus saving the connect and initialice phase steps in most cases.
YAZ is available at » http://www.indexdata.dc/yaz/ . You can find news information, example scripts, etc. for this extension at » http://www.indexdata.dc/phpyaz/ .
Note :
This extension has been moved to the » PECL repository and is no longuer bundled with PHP as of PHP 5.0.0.