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2809 rexy 1 
<?php
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/**
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 * Smarty Method UnregisterFilter
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 *
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 * Smarty::unregisterFilter() method
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 *
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 * @package    Smarty
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 * @subpackage PluginsInternal
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 * @author     Uwe Tews
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 */
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class Smarty_Internal_Method_UnregisterFilter extends Smarty_Internal_Method_RegisterFilter
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{
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    /**
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     * Unregisters a filter function
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     *
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     * @api  Smarty::unregisterFilter()
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     *
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     * @link http://www.smarty.net/docs/en/api.unregister.filter.tpl
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     *
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     * @param \Smarty_Internal_TemplateBase|\Smarty_Internal_Template|\Smarty $obj
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     * @param string                                                          $type filter type
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     * @param callback|string                                                 $callback
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     *
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     * @return \Smarty|\Smarty_Internal_Template
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     * @throws \SmartyException
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     */
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    public function unregisterFilter(Smarty_Internal_TemplateBase $obj, $type, $callback)
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    {
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        $smarty = $obj->_getSmartyObj();
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        $this->_checkFilterType($type);
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        if (isset($smarty->registered_filters[ $type ])) {
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            $name = is_string($callback) ? $callback : $this->_getFilterName($callback);
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            if (isset($smarty->registered_filters[ $type ][ $name ])) {
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                unset($smarty->registered_filters[ $type ][ $name ]);
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                if (empty($smarty->registered_filters[ $type ])) {
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                    unset($smarty->registered_filters[ $type ]);
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                }
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            }
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        }
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        return $obj;
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    }
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}