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-Postfilters {#advanced.features.postfilters}
-===========
-
-Template postfilters are PHP functions that your templates are ran
-through *after they are compiled*. Postfilters can be either
-[registered](#api.register.filter) or loaded from the [plugins
-directory](#variable.plugins.dir) by using the
-[`loadFilter()`](#api.load.filter) function or by setting the
-[`$autoload_filters`](#variable.autoload.filters) variable. Smarty will
-pass the compiled template code as the first argument, and expect the
-function to return the result of the processing.
-
-
- <?php
- // put this in your application
- function add_header_comment($tpl_source, Smarty_Internal_Template $template)
- {
- return "<?php echo \"<!-- Created by Smarty! -->\n\"; ?>\n".$tpl_source;
- }
-
- // register the postfilter
- $smarty->registerFilter('post','add_header_comment');
- $smarty->display('index.tpl');
- ?>
-
-
-
-The postfilter above will make the compiled Smarty template `index.tpl`
-look like:
-
-
- <!-- Created by Smarty! -->
- {* rest of template content... *}
-
-
-
-See also [`registerFilter()`](#api.register.filter),
-[prefilters](#advanced.features.prefilters),
-[outputfilters](#advanced.features.outputfilters), and
-[`loadFilter()`](#api.load.filter).