最佳PHP解析RSS类lastRSS

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/*
 ======================================================================
 lastRSS 0.9.1
 
 Simple yet powerfull PHP class to parse RSS files.
 
 by Vojtech Semecky, webmaster @ webdot . cz
 
 Latest version, features, manual and examples:
     http://lastrss.webdot.cz/
 
 ----------------------------------------------------------------------
 LICENSE
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License (GPL)
 as published by the Free Software Foundation; either version 2
 of the License, or (at your option) any later version.
 
 This program 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 General Public License for more details.
 
 To read the license please visit http://www.gnu.org/copyleft/gpl.html
 ======================================================================
*/
 
/**
* lastRSS
* Simple yet powerfull PHP class to parse RSS files.
*/
class lastRSS {
    // -------------------------------------------------------------------
    // Public properties
    // -------------------------------------------------------------------
    var $default_cp = ''UTF-8'';
    var $CDATA = ''nochange'';
    var $cp = '''';
    var $items_limit = 0;
    var $stripHTML = False;
    var $date_format = '''';
 
    // -------------------------------------------------------------------
    // Private variables
    // -------------------------------------------------------------------
    var $channeltags = array (''title'', ''link'', ''descrīption'', ''language'', ''copyright'', ''managingEditor'', ''webMaster'