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 <reference id="ref.errorfunc">
  <title>Error Handling and Logging Functions</title>
  <titleabbrev>Errors and Logging</titleabbrev>

  <partintro>
   <section id="errorfunc.intro">
   &reftitle.intro;
   <para>
    These are functions dealing with error handling and logging. They
    allow you to define your own error handling rules, as well as modify
    the way the errors can be logged. This allows you to change and
    enhance error reporting to suit your needs.
   </para>
   <para> 
    With the logging functions, you can send messages directly to other
    machines, to an email (or email to pager gateway!), to system logs,
    etc., so you can selectively log and monitor the most important parts
    of your applications and websites.
   </para>
   <para> 
    The error reporting functions allow you to customize what level and
    kind of error feedback is given, ranging from simple notices to customized
    functions returned during errors. 
   </para>
   </section>

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

   <section id="errorfunc.installation">
    &reftitle.install;
    &no.install;
   </section>

   &reference.errorfunc.ini;

   &reference.errorfunc.constants;

   &reference.errorfunc.examples;

   <section id="errorfunc.seealso">
   &reftitle.seealso;
    <para>
     See also <function>syslog</function>.
    </para>
   </section>

  </partintro>

&reference.errorfunc.functions;

 </reference>
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