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32 lines
1.2 KiB
Markdown
32 lines
1.2 KiB
Markdown
\$use\_sub\_dirs {#variable.use.sub.dirs}
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================
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Smarty will create subdirectories under the [compiled
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templates](#variable.compile.dir) and [cache](#variable.cache.dir)
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directories if `$use_sub_dirs` is set to TRUE, default is FALSE. In an
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environment where there are potentially tens of thousands of files
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created, this may help the filesystem speed. On the other hand, some
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environments do not allow PHP processes to create directories, so this
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must be disabled which is the default.
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Sub directories are more efficient, so use them if you can.
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Theoretically you get much better performance on a filesystem with 10
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directories each having 100 files, than with 1 directory having 1000
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files. This was certainly the case with Solaris 7 (UFS)\... with newer
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filesystems such as ext3 and especially reiserfs, the difference is
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almost nothing.
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> **Note**
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>
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> - `$use_sub_dirs=true` doesn\'t work with
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> [safe\_mode=On](&url.php-manual;features.safe-mode), that\'s why
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> it\'s switchable and why it\'s off by default.
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>
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> - `$use_sub_dirs=true` on Windows can cause problems.
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>
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> - Safe\_mode is being deprecated in PHP6.
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>
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See also [`$compile_id`](#variable.compile.id),
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[`$cache_dir`](#variable.cache.dir), and
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[`$compile_dir`](#variable.compile.dir).
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