What is Smarty?
Why use it?
Use Cases and Work Flow
Syntax Comparison
Template Inheritance
Best Practices
Crash Course
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Template prefilters are PHP functions that your templates are ran through before they are compiled. This is good for preprocessing your templates to remove unwanted comments, keeping an eye on what people are putting in their templates, etc.
Prefilters can be either registered or loaded from
the plugins directory
by using loadFilter()
function or
by setting the
$autoload_filters
variable.
Smarty will pass the template source code as the first argument, and expect the function to return the resulting template source code.
Example 17.11. Using a template prefilter
This will remove all the html comments in the template source.
<?php // put this in your application function remove_dw_comments($tpl_source, Smarty_Internal_Template $template) { return preg_replace("/<!--#.*-->/U",'',$tpl_source); } // register the prefilter $smarty->registerFilter('pre','remove_dw_comments'); $smarty->display('index.tpl'); ?>
See also
registerFilter()
,
postfilters
and
loadFilter()
.