posix-getegid.xml

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<refentry xml:id="function.posix-getegid" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>posix_getegid</refname>
  <refpurpose>Return the effective group ID of the current process</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>int</type><methodname>posix_getegid</methodname>
   <void/>
  </methodsynopsis>
  <para>
   Return the numeric effective group ID of the current process. 
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns an <type>integer</type> of the effective group ID.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>posix_getegid</function> example</title>
    <para>
     This example will print out the effective group id, once it is
     changed with <function>posix_setegid</function>.
    </para>
    <programlisting role="php">
<![CDATA[
<?php
echo 'My real group id is '.posix_getgid(); //20
posix_setegid(40);
echo 'My real group id is '.posix_getgid(); //20
echo 'My effective group id is '.posix_getegid(); //40
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

 <refsect1 role="notes">
  &reftitle.notes;
  <para>
   <function>posix_getegid</function> is different than 
   <function>posix_getgid</function> because effective group ID can be changed by
   a calling process using <function>posix_setegid</function>.
  </para>
 </refsect1>

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

</refentry>

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