Become Zend Certified

Prepare for the ZCE exam using our quizzes (web or iPad/iPhone). More info...

When you're ready get 7.5% off your exam voucher using voucher CJQNOV23 at the Zend Store

Writing Plugins

Plugins can be either loaded by Smarty automatically from the filesystem or they can be registered at runtime via one of the register_* API functions. They can also be unregistered by using unregister_* API functions.

For the plugins that are registered at runtime, the name of the plugin function(s) does not have to follow the naming convention.

If a plugin depends on some functionality provided by another plugin (as is the case with some plugins bundled with Smarty), then the proper way to load the needed plugin is this:

function smarty_function_yourPlugin(array $paramsSmarty_Internal_Template $template)
// load plugin depended upon
// plugin code


As a general rule, the currently evaluated template's Smarty_Internal_Template object is always passed to the plugins as the last parameter with two exceptions:

  • modifiers do not get passed the Smarty_Internal_Template object at all

  • blocks get passed $repeat after the Smarty_Internal_Template object to keep backwards compatibility to older versions of Smarty.

Smarty Template Engine