php-doc-en/reference/gettext/functions/textdomain.xml

<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- splitted from ./en/functions/gettext.xml, last change in rev 1.2 -->
  <refentry xml:id="function.textdomain" xmlns="http://docbook.org/ns/docbook">
   <refnamediv>
    <refname>textdomain</refname>
    <refpurpose>Sets the default domain</refpurpose>
   </refnamediv>
   <refsect1 role="description">
    &reftitle.description;
     <methodsynopsis>
      <type>string</type><methodname>textdomain</methodname>
      <methodparam><type>string</type><parameter>text_domain</parameter></methodparam>
     </methodsynopsis>
    <para>
     This function sets the domain to search within when calls are
     made to <function>gettext</function>, usually the named after an
     application.
    </para>
   </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>text_domain</parameter></term>
     <listitem>
      <para>
       The new message domain, or &null; to get the current setting without
       changing it
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   If successful, this function returns the current message
   domain, after possibly changing it.
  </para>
 </refsect1>

</refentry>

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