<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.yaz-errno" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>yaz_errno</refname>
  <refpurpose>Returns error number</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>int</type><methodname>yaz_errno</methodname>
   <methodparam><type>resource</type><parameter>id</parameter></methodparam>
  </methodsynopsis>
  <para>
   Returns an error number for the server (last request) identified by
   <parameter>id</parameter>.
  </para>
  <para>
   <function>yaz_errno</function> should be called after network activity for
   each server - (after <function>yaz_wait</function> returns) to determine the
   success or failure of the last operation (e.g. search).
  </para>
 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>id</parameter></term>
     <listitem>
      <para>
       The connection resource returned by <function>yaz_connect</function>.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns an error code. The error code is either a Z39.50 diagnostic code
   (usually a Bib-1 diagnostic) or a client side error code which is 
   generated by PHP/YAZ itself, such as "Connect failed", "Init Rejected", 
   etc.  
  </para>
 </refsect1>
 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>yaz_error</function></member>
    <member><function>yaz_addinfo</function></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>

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