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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 1.2 $ -->
<chapter xml:id="java.servlet" xmlns="http://docbook.org/ns/docbook">
<title>Java Servlet SAPI</title>
<para>
The Java Servlet SAPI builds upon the mechanism defined by the Java
extension to enable the entire PHP processor to be run as a servlet.
The primary advantage of this from a PHP perspective is that web servers
which support servlets typically take great care in pooling and reusing
JVMs. Build instructions for the Servlet SAPI module can be found in
<filename>php4/sapi/README</filename>.
Notes:
<itemizedlist>
<listitem>
<simpara>
While this code is intended to be able to run on any servlet engine,
it has only been tested on Apache's Jakarta/tomcat to date. Bug
reports, success stories and/or patches required to get this code
to run on other engines would be appreciated.
</simpara>
</listitem>
<listitem>
<simpara>
PHP has a habit of changing the working directory. sapi/servlet will
eventually change it back, but while PHP is running the servlet engine
may not be able to load any classes from the CLASSPATH which are
specified using a relative directory syntax, or find the work directory
used for administration and JSP compilation tasks.
</simpara>
</listitem>
</itemizedlist>
</para>
</chapter>
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