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<h1 class="title">Introduction</h1>
<p class="para">
This extension offers a PHP interface to the
<span class="productname">YAZ</span> toolkit that implements the
<a href="http://www.loc.gov/z3950/agency/" class="link external">» Z39.50
Protocol for Information Retrieval</a>.
With this extension you can easily implement a Z39.50 origin (client)
that searches or scans Z39.50 targets (servers) in parallel.
</p>
<p class="para">
The module hides most of the complexity of Z39.50 so it should be
fairly easy to use. It supports 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 initialize phase steps in most
cases.
</p>
<p class="para">
<span class="productname">YAZ</span> is available at <a href="http://www.indexdata.dk/yaz/" class="link external">» http://www.indexdata.dk/yaz/</a>. You can find news information,
example scripts, etc. for this extension at <a href="http://www.indexdata.dk/phpyaz/" class="link external">» http://www.indexdata.dk/phpyaz/</a>.
</p>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
This extension has been moved to the
<a href="http://pecl.php.net/" class="link external">» PECL</a> repository and is no longer bundled with
PHP as of PHP 5.0.0.
</p>
</p></blockquote>
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