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<refentry xml:id="function.posix-strerror" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>posix_strerror</refname>
  <refpurpose>Retrieve the system error message associated with the given errno</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>string</type><methodname>posix_strerror</methodname>
   <methodparam><type>int</type><parameter>errno</parameter></methodparam>
  </methodsynopsis>
  <para>
   Returns the POSIX system error message associated with the given
   <parameter>errno</parameter>.  You may get the
   <parameter>errno</parameter> parameter by calling
   <function>posix_get_last_error</function>.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>errno</parameter></term>
     <listitem>
      <para>
       A POSIX error number, returned by 
       <function>posix_get_last_error</function>. If set to 0, then the
       string "Success" is returned.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns the error message, as a string.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>posix_strerror</function> example</title>
    <para>This example will attempt to kill a process which does not
    exist, then will print out the corresponding error message.</para>
    <programlisting role="php">
<![CDATA[
<?php
posix_kill(50,SIGKILL);
echo posix_strerror(posix_get_last_error())."\n";
?>
]]>
    </programlisting>
    &example.outputs.similar;
    <screen>
<![CDATA[
No such process
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>posix_get_last_error</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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