PHP-gekapselte SmartBC-Klasse-PHP-Tutorial-php.cn

In diesem Artikel wird hauptsächlich die PHP-gekapselte smartBC-Klasse vorgestellt, die durch benutzerdefinierte Klassen eine effektive Kompatibilität und Erweiterung für Smarty2 erreicht.
Die Details lauten wie folgt:
<?php
/**
 * Project:   Smarty: the PHP compiling template engine
 * File:    SmartyBC.class.php
 * SVN:     $Id: $
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 * For questions, help, comments, discussion, etc., please join the
 * Smarty mailing list. Send a blank e-mail to
 * smarty-discussion-subscribe@googlegroups.com
 *
 * @link   http://www.smarty.net/
 * @copyright 2008 New Digital Group, Inc.
 * @author  Monte Ohrt <monte at ohrt dot com>
 * @author  Uwe Tews
 * @author  Rodney Rehm
 * @package  Smarty
 */
/**
 * @ignore
 */
require_once(dirname(__FILE__) . &#39;/Smarty.class.php&#39;);
/**
 * Smarty Backward Compatability Wrapper Class
 *
 * @package Smarty
 */
class SmartyBC extends Smarty
{
  /**
   * Smarty 2 BC
   *
   * @var string
   */
  public $_version = self::SMARTY_VERSION;
  /**
   * Initialize new SmartyBC object
   *
   * @param array $options options to set during initialization, e.g. array( &#39;forceCompile&#39; => false )
   */
  public function __construct(array $options = array())
  {
    parent::__construct($options);
    // register {php} tag
    $this->registerPlugin(&#39;block&#39;, &#39;php&#39;, &#39;smarty_php_tag&#39;);
  }
  /**
   * wrapper for assign_by_ref
   *
   * @param string $tpl_var the template variable name
   * @param mixed &$value the referenced value to assign
   */
  public function assign_by_ref($tpl_var, &$value)
  {
    $this->assignByRef($tpl_var, $value);
  }
  /**
   * wrapper for append_by_ref
   *
   * @param string $tpl_var the template variable name
   * @param mixed  &$value the referenced value to append
   * @param boolean $merge  flag if array elements shall be merged
   */
  public function append_by_ref($tpl_var, &$value, $merge = false)
  {
    $this->appendByRef($tpl_var, $value, $merge);
  }
  /**
   * clear the given assigned template variable.
   *
   * @param string $tpl_var the template variable to clear
   */
  public function clear_assign($tpl_var)
  {
    $this->clearAssign($tpl_var);
  }
  /**
   * Registers custom function to be used in templates
   *
   * @param string $function   the name of the template function
   * @param string $function_impl the name of the PHP function to register
   * @param bool  $cacheable
   * @param mixed $cache_attrs
   */
  public function register_function($function, $function_impl, $cacheable = true, $cache_attrs = null)
  {
    $this->registerPlugin(&#39;function&#39;, $function, $function_impl, $cacheable, $cache_attrs);
  }
  /**
   * Unregisters custom function
   *
   * @param string $function name of template function
   */
  public function unregister_function($function)
  {
    $this->unregisterPlugin(&#39;function&#39;, $function);
  }
  /**
   * Registers object to be used in templates
   *
   * @param string $object   name of template object
   * @param object $object_impl the referenced PHP object to register
   * @param array  $allowed   list of allowed methods (empty = all)
   * @param boolean $smarty_args smarty argument format, else traditional
   * @param array  $block_methods list of methods that are block format
   *
   * @throws SmartyException
   * @internal param array $block_functs list of methods that are block format
   */
  public function register_object($object, $object_impl, $allowed = array(), $smarty_args = true, $block_methods = array())
  {
    settype($allowed, &#39;array&#39;);
    settype($smarty_args, &#39;boolean&#39;);
    $this->registerObject($object, $object_impl, $allowed, $smarty_args, $block_methods);
  }
  /**
   * Unregisters object
   *
   * @param string $object name of template object
   */
  public function unregister_object($object)
  {
    $this->unregisterObject($object);
  }
  /**
   * Registers block function to be used in templates
   *
   * @param string $block   name of template block
   * @param string $block_impl PHP function to register
   * @param bool  $cacheable
   * @param mixed $cache_attrs
   */
  public function register_block($block, $block_impl, $cacheable = true, $cache_attrs = null)
  {
    $this->registerPlugin(&#39;block&#39;, $block, $block_impl, $cacheable, $cache_attrs);
  }
  /**
   * Unregisters block function
   *
   * @param string $block name of template function
   */
  public function unregister_block($block)
  {
    $this->unregisterPlugin(&#39;block&#39;, $block);
  }
  /**
   * Registers compiler function
   *
   * @param string $function   name of template function
   * @param string $function_impl name of PHP function to register
   * @param bool  $cacheable
   */
  public function register_compiler_function($function, $function_impl, $cacheable = true)
  {
    $this->registerPlugin(&#39;compiler&#39;, $function, $function_impl, $cacheable);
  }
  /**
   * Unregisters compiler function
   *
   * @param string $function name of template function
   */
  public function unregister_compiler_function($function)
  {
    $this->unregisterPlugin(&#39;compiler&#39;, $function);
  }
  /**
   * Registers modifier to be used in templates
   *
   * @param string $modifier   name of template modifier
   * @param string $modifier_impl name of PHP function to register
   */
  public function register_modifier($modifier, $modifier_impl)
  {
    $this->registerPlugin(&#39;modifier&#39;, $modifier, $modifier_impl);
  }
  /**
   * Unregisters modifier
   *
   * @param string $modifier name of template modifier
   */
  public function unregister_modifier($modifier)
  {
    $this->unregisterPlugin(&#39;modifier&#39;, $modifier);
  }
  /**
   * Registers a resource to fetch a template
   *
   * @param string $type   name of resource
   * @param array $functions array of functions to handle resource
   */
  public function register_resource($type, $functions)
  {
    $this->registerResource($type, $functions);
  }
  /**
   * Unregisters a resource
   *
   * @param string $type name of resource
   */
  public function unregister_resource($type)
  {
    $this->unregisterResource($type);
  }
  /**
   * Registers a prefilter function to apply
   * to a template before compiling
   *
   * @param callable $function
   */
  public function register_prefilter($function)
  {
    $this->registerFilter(&#39;pre&#39;, $function);
  }
  /**
   * Unregisters a prefilter function
   *
   * @param callable $function
   */
  public function unregister_prefilter($function)
  {
    $this->unregisterFilter(&#39;pre&#39;, $function);
  }
  /**
   * Registers a postfilter function to apply
   * to a compiled template after compilation
   *
   * @param callable $function
   */
  public function register_postfilter($function)
  {
    $this->registerFilter(&#39;post&#39;, $function);
  }
  /**
   * Unregisters a postfilter function
   *
   * @param callable $function
   */
  public function unregister_postfilter($function)
  {
    $this->unregisterFilter(&#39;post&#39;, $function);
  }
  /**
   * Registers an output filter function to apply
   * to a template output
   *
   * @param callable $function
   */
  public function register_outputfilter($function)
  {
    $this->registerFilter(&#39;output&#39;, $function);
  }
  /**
   * Unregisters an outputfilter function
   *
   * @param callable $function
   */
  public function unregister_outputfilter($function)
  {
    $this->unregisterFilter(&#39;output&#39;, $function);
  }
  /**
   * load a filter of specified type and name
   *
   * @param string $type filter type
   * @param string $name filter name
   */
  public function load_filter($type, $name)
  {
    $this->loadFilter($type, $name);
  }
  /**
   * clear cached content for the given template and cache id
   *
   * @param string $tpl_file  name of template file
   * @param string $cache_id  name of cache_id
   * @param string $compile_id name of compile_id
   * @param string $exp_time  expiration time
   *
   * @return boolean
   */
  public function clear_cache($tpl_file = null, $cache_id = null, $compile_id = null, $exp_time = null)
  {
    return $this->clearCache($tpl_file, $cache_id, $compile_id, $exp_time);
  }
  /**
   * clear the entire contents of cache (all templates)
   *
   * @param string $exp_time expire time
   *
   * @return boolean
   */
  public function clear_all_cache($exp_time = null)
  {
    return $this->clearCache(null, null, null, $exp_time);
  }
  /**
   * test to see if valid cache exists for this template
   *
   * @param string $tpl_file name of template file
   * @param string $cache_id
   * @param string $compile_id
   *
   * @return boolean
   */
  public function is_cached($tpl_file, $cache_id = null, $compile_id = null)
  {
    return $this->isCached($tpl_file, $cache_id, $compile_id);
  }
  /**
   * clear all the assigned template variables.
   */
  public function clear_all_assign()
  {
    $this->clearAllAssign();
  }
  /**
   * clears compiled version of specified template resource,
   * or all compiled template files if one is not specified.
   * This function is for advanced use only, not normally needed.
   *
   * @param string $tpl_file
   * @param string $compile_id
   * @param string $exp_time
   *
   * @return boolean results of {@link smarty_core_rm_auto()}
   */
  public function clear_compiled_tpl($tpl_file = null, $compile_id = null, $exp_time = null)
  {
    return $this->clearCompiledTemplate($tpl_file, $compile_id, $exp_time);
  }
  /**
   * Checks whether requested template exists.
   *
   * @param string $tpl_file
   *
   * @return boolean
   */
  public function template_exists($tpl_file)
  {
    return $this->templateExists($tpl_file);
  }
  /**
   * Returns an array containing template variables
   *
   * @param string $name
   *
   * @return array
   */
  public function get_template_vars($name = null)
  {
    return $this->getTemplateVars($name);
  }
  /**
   * Returns an array containing config variables
   *
   * @param string $name
   *
   * @return array
   */
  public function get_config_vars($name = null)
  {
    return $this->getConfigVars($name);
  }
  /**
   * load configuration values
   *
   * @param string $file
   * @param string $section
   * @param string $scope
   */
  public function config_load($file, $section = null, $scope = &#39;global&#39;)
  {
    $this->ConfigLoad($file, $section, $scope);
  }
  /**
   * return a reference to a registered object
   *
   * @param string $name
   *
   * @return object
   */
  public function get_registered_object($name)
  {
    return $this->getRegisteredObject($name);
  }
  /**
   * clear configuration values
   *
   * @param string $var
   */
  public function clear_config($var = null)
  {
    $this->clearConfig($var);
  }
  /**
   * trigger Smarty error
   *
   * @param string $error_msg
   * @param integer $error_type
   */
  public function trigger_error($error_msg, $error_type = E_USER_WARNING)
  {
    trigger_error("Smarty error: $error_msg", $error_type);
  }
}
/**
 * Smarty {php}{/php} block function
 *
 * @param array  $params  parameter list
 * @param string $content contents of the block
 * @param object $template template object
 * @param boolean &$repeat repeat flag
 *
 * @return string content re-formatted
 */
function smarty_php_tag($params, $content, $template, &$repeat)
{
  eval($content);
  return &#39;&#39;;
}
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