ThinkPHP/Extend/Vendor/Zend/Date.php

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<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category  Zend
 * @package   Zend_Date
 * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd     New BSD License
 * @version   $Id: Date.php 2504 2011-12-28 07:35:29Z liu21st $
 */

/**
 * Include needed Date classes
 */
require_once 'Zend/Date/DateObject.php';
require_once 'Zend/Locale.php';
require_once 'Zend/Locale/Format.php';
require_once 'Zend/Locale/Math.php';

/**
 * @category  Zend
 * @package   Zend_Date
 * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Date extends Zend_Date_DateObject
{
    private $_locale  = null;

    // Fractional second variables
    private $_fractional = 0;
    private $_precision  = 3;

    private static $_options = array(
        'format_type'  => 'iso',      // format for date strings 'iso' or 'php'
        'fix_dst'      => true,       // fix dst on summer/winter time change
        'extend_month' => false,      // false - addMonth like SQL, true like excel
        'cache'        => null,       // cache to set
        'timesync'     => null        // timesync server to set
    );

    // Class wide Date Constants
    const DAY               = 'dd';
    const DAY_SHORT         = 'd';
    const DAY_SUFFIX        = 'SS';
    const DAY_OF_YEAR       = 'D';
    const WEEKDAY           = 'EEEE';
    const WEEKDAY_SHORT     = 'EEE';
    const WEEKDAY_NARROW    = 'E';
    const WEEKDAY_NAME      = 'EE';