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 <reference id="ref.dio">
  <title>Direct IO Functions</title>
  <titleabbrev>Direct IO</titleabbrev>

  <partintro>
   <section id="dio.intro">
    &reftitle.intro;
    <para>
     PHP supports the direct io functions as described in the Posix
     Standard (Section 6) for performing I/O functions at a lower
     level than the C-Language stream I/O functions
     (<function>fopen</function>, <function>fread</function>,..).  The use
     of the DIO functions should be considered only when direct 
     control of a device is needed.  In all other cases, the standard
     <link linkend="ref.filesystem">filesystem</link> functions are more
     than adequate. 
    </para>
    <note>
     <para>
      &pecl.moved-ver;5.1.0.
     </para>
    </note>
    <para>
     This extension is only available on Windows Platforms as of PHP 5.0.0
    </para>
   </section>

   <section id="dio.requirements">
    &reftitle.required;
    &no.requirement;
   </section>

   &reference.dio.configure;
   &reference.dio.constants;

   <section id="dio.configuration">
    &reftitle.runtime;
    &no.config;
   </section>

   <section id="dio.resources">
    &reftitle.resources;
    <para>
     One resource type is defined by this extension:
     a file descriptor returned by <function>dio_open</function>.
    </para>
   </section>

  </partintro>
        
&reference.dio.functions;

 </reference>
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