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<?php
/**
* Smarty Method UnregisterFilter
*
* Smarty::unregisterFilter() method
*
* @package Smarty
* @subpackage PluginsInternal
* @author Uwe Tews
*/
class Smarty_Internal_Method_UnregisterFilter extends Smarty_Internal_Method_RegisterFilter
{
/**
* Unregisters a filter function
*
* @api Smarty::unregisterFilter()
*
* @link http://www.smarty.net/docs/en/api.unregister.filter.tpl
*
* @param \Smarty_Internal_TemplateBase|\Smarty_Internal_Template|\Smarty $obj
* @param string $type filter type
* @param callback|string $callback
*
* @return \Smarty|\Smarty_Internal_Template
*/
public function unregisterFilter(Smarty_Internal_TemplateBase $obj, $type, $callback)
{
$smarty = isset($obj->smarty) ? $obj->smarty : $obj;
$this->_checkFilterType($type);
if (isset($smarty->registered_filters[$type])) {
$name = is_string($callback) ? $callback : $this->_getFilterName($callback);
if (isset($smarty->registered_filters[$type][$name])) {
unset($smarty->registered_filters[$type][$name]);
if (empty($smarty->registered_filters[$type])) {
unset($smarty->registered_filters[$type]);
}
}
}
return $obj;
}
}
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