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154 lines
3.7 KiB
154 lines
3.7 KiB
<?php
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defined('BASE_PATH') OR exit('No direct script access allowed');
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/**
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* 获得当前格林威治时间的时间戳
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*
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* @return integer
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*/
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function gmtime()
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{
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return (time() - date('Z'));
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}
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/**
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* 获得服务器的时区
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*
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* @return integer
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*/
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function server_timezone()
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{
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if (function_exists('date_default_timezone_get')) {
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return date_default_timezone_get();
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} else {
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return date('Z') / 3600;
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}
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}
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/**
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* 生成一个用户自定义时区日期的GMT时间戳
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*
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* @access public
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* @param int $hour
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* @param int $minute
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* @param int $second
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* @param int $month
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* @param int $day
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* @param int $year
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*
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* @return void
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*/
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function local_mktime($hour = NULL, $minute = NULL, $second = NULL, $month = NULL, $day = NULL, $year = NULL)
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{
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$timezone = isset($_SESSION['timezone']) ? $_SESSION['timezone'] : $GLOBALS['_CFG']['timezone'];
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/**
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* $time = mktime($hour, $minute, $second, $month, $day, $year) - date('Z') + (date('Z') - $timezone * 3600)
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* 先用mktime生成时间戳，再减去date('Z')转换为GMT时间，然后修正为用户自定义时间。以下是化简后结果
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**/
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$time = mktime($hour, $minute, $second, $month, $day, $year) - $timezone * 3600;
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return $time;
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}
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/**
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* 将GMT时间戳格式化为用户自定义时区日期
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*
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* @param string $format
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* @param integer $time 该参数必须是一个GMT的时间戳
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*
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* @return string
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*/
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function local_date($format, $time = NULL)
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{
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$timezone = isset($_SESSION['timezone']) ? $_SESSION['timezone'] : $GLOBALS['_CFG']['timezone'];
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if ($time === NULL) {
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$time = gmtime();
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} elseif ($time <= 0) {
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return '';
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}
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$time += ($timezone * 3600);
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return date($format, $time);
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}
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/**
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* 转换字符串形式的时间表达式为GMT时间戳
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*
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* @param string $str
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*
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* @return integer
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*/
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function gmstr2time($str)
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{
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$time = strtotime($str);
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if ($time > 0) {
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$time -= date('Z');
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}
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return $time;
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}
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/**
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* 将一个用户自定义时区的日期转为GMT时间戳
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*
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* @access public
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* @param string $str
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*
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* @return integer
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*/
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function local_strtotime($str)
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{
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$timezone = isset($_SESSION['timezone']) ? $_SESSION['timezone'] : $GLOBALS['_CFG']['timezone'];
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/**
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* $time = mktime($hour, $minute, $second, $month, $day, $year) - date('Z') + (date('Z') - $timezone * 3600)
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* 先用mktime生成时间戳，再减去date('Z')转换为GMT时间，然后修正为用户自定义时间。以下是化简后结果
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**/
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$time = strtotime($str) - $timezone * 3600;
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return $time;
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}
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/**
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* 获得用户所在时区指定的时间戳
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*
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* @param $timestamp integer 该时间戳必须是一个服务器本地的时间戳
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*
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* @return array
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*/
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function local_gettime($timestamp = NULL)
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{
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$tmp = local_getdate($timestamp);
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return $tmp[0];
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}
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/**
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* 获得用户所在时区指定的日期和时间信息
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*
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* @param $timestamp integer 该时间戳必须是一个服务器本地的时间戳
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*
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* @return array
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*/
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function local_getdate($timestamp = NULL)
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{
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$timezone = isset($_SESSION['timezone']) ? $_SESSION['timezone'] : $GLOBALS['_CFG']['timezone'];
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/* 如果时间戳为空，则获得服务器的当前时间 */
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if ($timestamp === NULL) {
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$timestamp = time();
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}
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$gmt = $timestamp - date('Z'); // 得到该时间的格林威治时间
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$local_time = $gmt + ($timezone * 3600); // 转换为用户所在时区的时间戳
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return getdate($local_time);
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}
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