smarty/docs/en/programmers/api-variables/variable-use-sub-dirs.xml

<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision$ -->
     <sect1 id="variable.use.sub.dirs">
      <title>$use_sub_dirs</title>
 <para>
Smarty will create subdirectories under the
<link linkend="variable.compile.dir">compiled templates</link> and
<link linkend="variable.cache.dir">cache</link>
directories if <parameter>$use_sub_dirs</parameter> is set to &true;,
 default is &false;.
In an environment where there are potentially tens of thousands of files created,
this may help the filesystem speed.
On the other hand, some environments do not allow PHP processes to
create directories, so this must be disabled which is the default.
</para>
<para>
Sub directories are more efficient, so use them  if you can.
Theoretically you get much better perfomance on a filesystem with 10
directories each having 100 files, than with 1 directory having 1000
files. This was certainly the case with Solaris 7 (UFS)... with newer
filesystems such as ext3 and especially reiserfs, the difference is almost
nothing.
</para>

<note>
<title>Technical Note</title>
<itemizedlist>
<listitem>
	<para><literal>$use_sub_dirs=true</literal> doesn't work with
	<ulink url="&url.php-manual;features.safe-mode">safe_mode=On</ulink>,
	that's why it's switchable and why it's off by default.
	</para>
</listitem>
<listitem>
	<para><literal>$use_sub_dirs=true</literal> on Windows can cause problems.</para>
</listitem>
<listitem>
	<para>Safe_mode is being deprecated in PHP6.</para>
</listitem>
</itemizedlist>
</note>

 <para>
  See also
  <link linkend="variable.compile.id"><parameter>$compile_id</parameter></link>,
  <link linkend="variable.cache.dir"><parameter>$cache_dir</parameter></link>,
   and
   <link linkend="variable.compile.dir"><parameter>$compile_dir</parameter></link>.
 </para>
</sect1>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"../../../../manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->