phing: show include path

<?xml version="1.0" encoding="utf-8"?>
<project name="test" default="main">
    <target name="main">
        <adhoc-task name="showincludepath"><![CDATA[
            class ShowIncludePathTask extends Task {
                function main() {
                    $this->log(get_include_path());
                }
            }
        ]]></adhoc-task>
        <showincludepath/>
    </target>
</project>