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Edit File: smarty_internal_method_registerplugin.php

<?php

/**
 * Smarty Method RegisterPlugin
 *
 * Smarty::registerPlugin() method
 *
 * @package    Smarty
 * @subpackage PluginsInternal
 * @author     Uwe Tews
 */
class Smarty_Internal_Method_RegisterPlugin
{
    /**
     * Valid for Smarty and template object
     *
     * @var int
     */
    public $objMap = 3;

/**
     * Registers plugin to be used in templates
     *
     * @api  Smarty::registerPlugin()
     * @link http://www.smarty.net/docs/en/api.register.plugin.tpl
     *
     * @param \Smarty_Internal_TemplateBase|\Smarty_Internal_Template|\Smarty $obj
     * @param string                                                          $type       plugin type
     * @param string                                                          $name       name of template tag
     * @param callback                                                        $callback   PHP callback to register
     * @param bool                                                            $cacheable  if true (default) this
     *                                                                                    function is cache able
     * @param mixed                                                           $cache_attr caching attributes if any
     *
     * @return \Smarty|\Smarty_Internal_Template
     * @throws SmartyException              when the plugin tag is invalid
     */
    public function registerPlugin(
        Smarty_Internal_TemplateBase $obj,
        $type,
        $name,
        $callback,
        $cacheable = true,
        $cache_attr = null
    ) {
        $smarty = $obj->_getSmartyObj();
        if (isset($smarty->registered_plugins[ $type ][ $name ])) {
            throw new SmartyException("Plugin tag '{$name}' already registered");
        } elseif (!is_callable($callback)) {
            throw new SmartyException("Plugin '{$name}' not callable");
        } else {
            $smarty->registered_plugins[ $type ][ $name ] = array($callback, (bool)$cacheable, (array)$cache_attr);
        }
        return $obj;
    }
}