$compile_id
Persistant compile identifier. As an alternative to passing the same
$compile_id to each and every function call, you can set this
$compile_id and it will be used implicitly thereafter.
With a $compile_id you can work around the limitation that you cannot
use the same
$compile_dir
for different
$template_dirs. If you set a
distinct $compile_id for each
$template_dir then Smarty can tell the
compiled templates apart by their $compile_id.
If you have for example a
prefilter
that localizes your templates
(that is: translates language dependend parts) at compile time, then
you should use the current language as $compile_id and you will get a
set of compiled templates for each language you use.
Another example would be to use the same compile directory across
multiple domains / multiple virtual hosts.
Example 12-4. $compile_id in a virtual host enviroment
<?php
$smarty->compile_id = $_SERVER['SERVER_NAME'];
$smarty->compile_dir = '/path/to/shared_compile_dir';
?>
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