david
802479ed64
git-svn-id: https://192.168.0.254/svn/Proyectos.FundacionLQDVI_WebCongresos/trunk@2 94ccb1af-fd9d-d947-8d90-7f70ea60afc8
304 lines
8.8 KiB
PHP
304 lines
8.8 KiB
PHP
<?php
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/**
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* @version $Id: date.php 14401 2010-01-26 14:10:00Z louis $
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* @package Joomla.Framework
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* @subpackage Utilities
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* @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
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* @license GNU/GPL, see LICENSE.php
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* Joomla! is free software. This version may have been modified pursuant
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* to the GNU General Public License, and as distributed it includes or
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* is derivative of works licensed under the GNU General Public License or
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* other free or open source software licenses.
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* See COPYRIGHT.php for copyright notices and details.
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*/
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// Check to ensure this file is within the rest of the framework
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defined('JPATH_BASE') or die();
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/**
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* JDate is a class that stores a date
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*
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* @package Joomla.Framework
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* @subpackage Utilities
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* @since 1.5
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*/
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class JDate extends JObject
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{
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/**
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* Unix timestamp
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*
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* @var int|boolean
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* @access protected
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*/
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var $_date = false;
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/**
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* Time offset (in seconds)
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*
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* @var string
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* @access protected
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*/
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var $_offset = 0;
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/**
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* Creates a new instance of JDate representing a given date.
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*
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* Accepts RFC 822, ISO 8601 date formats as well as unix time stamps.
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* If not specified, the current date and time is used.
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*
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* @param mixed $date optional the date this JDate will represent.
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* @param int $tzOffset optional the timezone $date is from
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*/
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function __construct($date = 'now', $tzOffset = 0)
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{
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if ($date == 'now' || empty($date))
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{
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$this->_date = strtotime(gmdate("M d Y H:i:s", time()));
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return;
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}
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$tzOffset *= 3600;
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if (is_numeric($date))
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{
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$this->_date = $date - $tzOffset;
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return;
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}
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if (preg_match('~(?:(?:Mon|Tue|Wed|Thu|Fri|Sat|Sun),\\s+)?(\\d{1,2})\\s+([a-zA-Z]{3})\\s+(\\d{4})\\s+(\\d{2}):(\\d{2}):(\\d{2})\\s+(.*)~i',$date,$matches))
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{
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$months = Array(
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'jan' => 1, 'feb' => 2, 'mar' => 3, 'apr' => 4,
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'may' => 5, 'jun' => 6, 'jul' => 7, 'aug' => 8,
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'sep' => 9, 'oct' => 10, 'nov' => 11, 'dec' => 12
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);
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$matches[2] = strtolower($matches[2]);
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if (! isset($months[$matches[2]])) {
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return;
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}
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$this->_date = mktime(
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$matches[4], $matches[5], $matches[6],
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$months[$matches[2]], $matches[1], $matches[3]
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);
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if ($this->_date === false) {
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return;
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}
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if ($matches[7][0] == '+') {
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$tzOffset = 3600 * substr($matches[7], 1, 2)
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+ 60 * substr($matches[7], -2);
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} elseif ($matches[7][0] == '-') {
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$tzOffset = -3600 * substr($matches[7], 1, 2)
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- 60 * substr($matches[7], -2);
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} else {
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if (strlen($matches[7]) == 1) {
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$oneHour = 3600;
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$ord = ord($matches[7]);
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if ($ord < ord('M')) {
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$tzOffset = (ord('A') - $ord - 1) * $oneHour;
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} elseif ($ord >= ord('M') && $matches[7] != 'Z') {
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$tzOffset = ($ord - ord('M')) * $oneHour;
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} elseif ($matches[7] == 'Z') {
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$tzOffset = 0;
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}
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}
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switch ($matches[7]) {
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case 'UT':
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case 'GMT': $tzOffset = 0;
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}
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}
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$this->_date -= $tzOffset;
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return;
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}
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if (preg_match('~(\\d{4})-(\\d{2})-(\\d{2})[T\s](\\d{2}):(\\d{2}):(\\d{2})(.*)~', $date, $matches))
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{
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$this->_date = mktime(
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$matches[4], $matches[5], $matches[6],
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$matches[2], $matches[3], $matches[1]
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);
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if ($this->_date == false) {
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return;
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}
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if (isset($matches[7][0])) {
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if ($matches[7][0] == '+' || $matches[7][0] == '-') {
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$tzOffset = 60 * (
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substr($matches[7], 0, 3) * 60 + substr($matches[7], -2)
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);
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} elseif ($matches[7] == 'Z') {
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$tzOffset = 0;
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}
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}
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$this->_date -= $tzOffset;
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return;
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}
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$this->_date = (strtotime($date) == -1) ? false : strtotime($date);
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if ($this->_date) {
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$this->_date -= $tzOffset;
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}
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}
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/**
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* Set the date offset (in hours)
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*
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* @access public
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* @param float The offset in hours
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*/
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function setOffset($offset) {
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$this->_offset = 3600 * $offset;
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}
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/**
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* Get the date offset (in hours)
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*
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* @access public
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* @return integer
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*/
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function getOffset() {
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return ((float) $this->_offset) / 3600.0;
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}
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/**
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* Gets the date as an RFC 822 date.
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*
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* @return a date in RFC 822 format
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* @link http://www.ietf.org/rfc/rfc2822.txt?number=2822 IETF RFC 2822
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* (replaces RFC 822)
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*/
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function toRFC822($local = false)
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{
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$date = ($local) ? $this->_date + $this->_offset : $this->_date;
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$date = ($this->_date !== false) ? date('D, d M Y H:i:s', $date).' +0000' : null;
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return $date;
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}
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/**
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* Gets the date as an ISO 8601 date.
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*
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* @return a date in ISO 8601 (RFC 3339) format
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* @link http://www.ietf.org/rfc/rfc3339.txt?number=3339 IETF RFC 3339
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*/
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function toISO8601($local = false)
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{
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$date = ($local) ? $this->_date + $this->_offset : $this->_date;
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$offset = $this->getOffset();
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$offset = ($local && $this->_offset) ? sprintf("%+03d:%02d", $offset, abs(($offset-intval($offset))*60) ) : 'Z';
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$date = ($this->_date !== false) ? date('Y-m-d\TH:i:s', $date).$offset : null;
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return $date;
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}
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/**
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* Gets the date as in MySQL datetime format
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*
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* @return a date in MySQL datetime format
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* @link http://dev.mysql.com/doc/refman/4.1/en/datetime.html MySQL DATETIME
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* format
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*/
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function toMySQL($local = false)
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{
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$date = ($local) ? $this->_date + $this->_offset : $this->_date;
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$date = ($this->_date !== false) ? date('Y-m-d H:i:s', $date) : null;
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return $date;
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}
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/**
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* Gets the date as UNIX time stamp.
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*
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* @return a date as a unix time stamp
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*/
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function toUnix($local = false)
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{
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$date = null;
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if ($this->_date !== false) {
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$date = ($local) ? $this->_date + $this->_offset : $this->_date;
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}
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return $date;
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}
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/**
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* Gets the date in a specific format
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*
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* Returns a string formatted according to the given format. Month and weekday names and
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* other language dependent strings respect the current locale
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*
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* @param string $format The date format specification string (see {@link PHP_MANUAL#strftime})
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* @return a date in a specific format
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*/
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function toFormat($format = '%Y-%m-%d %H:%M:%S')
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{
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$date = ($this->_date !== false) ? $this->_strftime($format, $this->_date + $this->_offset) : null;
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return $date;
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}
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/**
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* Translates needed strings in for JDate::toFormat (see {@link PHP_MANUAL#strftime})
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*
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* @access protected
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* @param string $format The date format specification string (see {@link PHP_MANUAL#strftime})
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* @param int $time Unix timestamp
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* @return string a date in the specified format
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*/
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function _strftime($format, $time)
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{
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if(strpos($format, '%a') !== false)
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$format = str_replace('%a', $this->_dayToString(date('w', $time), true), $format);
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if(strpos($format, '%A') !== false)
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$format = str_replace('%A', $this->_dayToString(date('w', $time)), $format);
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if(strpos($format, '%b') !== false)
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$format = str_replace('%b', $this->_monthToString(date('n', $time), true), $format);
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if(strpos($format, '%B') !== false)
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$format = str_replace('%B', $this->_monthToString(date('n', $time)), $format);
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$date = strftime($format, $time);
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return $date;
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}
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/**
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* Translates month number to string
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*
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* @access protected
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* @param int $month The numeric month of the year
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* @param bool $abbr Return the abreviated month string?
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* @return string month string
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*/
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function _monthToString($month, $abbr = false)
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{
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switch ($month)
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{
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case 1: return $abbr ? JText::_('JANUARY_SHORT') : JText::_('JANUARY');
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case 2: return $abbr ? JText::_('FEBRUARY_SHORT') : JText::_('FEBRUARY');
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case 3: return $abbr ? JText::_('MARCH_SHORT') : JText::_('MARCH');
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case 4: return $abbr ? JText::_('APRIL_SHORT') : JText::_('APRIL');
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case 5: return $abbr ? JText::_('MAY_SHORT') : JText::_('MAY');
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case 6: return $abbr ? JText::_('JUNE_SHORT') : JText::_('JUNE');
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case 7: return $abbr ? JText::_('JULY_SHORT') : JText::_('JULY');
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case 8: return $abbr ? JText::_('AUGUST_SHORT') : JText::_('AUGUST');
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case 9: return $abbr ? JText::_('SEPTEMBER_SHORT') : JText::_('SEPTEMBER');
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case 10: return $abbr ? JText::_('OCTOBER_SHORT') : JText::_('OCTOBER');
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case 11: return $abbr ? JText::_('NOVEMBER_SHORT') : JText::_('NOVEMBER');
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case 12: return $abbr ? JText::_('DECEMBER_SHORT') : JText::_('DECEMBER');
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}
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}
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/**
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* Translates day of week number to string
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*
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* @access protected
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* @param int $day The numeric day of the week
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* @param bool $abbr Return the abreviated day string?
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* @return string day string
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*/
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function _dayToString($day, $abbr = false)
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{
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switch ($day)
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{
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case 0: return $abbr ? JText::_('SUN') : JText::_('SUNDAY');
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case 1: return $abbr ? JText::_('MON') : JText::_('MONDAY');
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case 2: return $abbr ? JText::_('TUE') : JText::_('TUESDAY');
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case 3: return $abbr ? JText::_('WED') : JText::_('WEDNESDAY');
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case 4: return $abbr ? JText::_('THU') : JText::_('THURSDAY');
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case 5: return $abbr ? JText::_('FRI') : JText::_('FRIDAY');
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case 6: return $abbr ? JText::_('SAT') : JText::_('SATURDAY');
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}
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}
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}
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