702 行
16 KiB
PHP
702 行
16 KiB
PHP
<?php
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP
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*
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* This content is released under the MIT License (MIT)
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*
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* Copyright (c) 2014 - 2019, British Columbia Institute of Technology
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @package CodeIgniter
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* @author EllisLab Dev Team
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* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
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* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
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* @license https://opensource.org/licenses/MIT MIT License
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* @link https://codeigniter.com
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* @since Version 1.0.0
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* @filesource
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*/
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defined('BASEPATH') OR exit('No direct script access allowed');
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/**
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* CodeIgniter Date Helpers
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*
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* @package CodeIgniter
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* @subpackage Helpers
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* @category Helpers
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* @author EllisLab Dev Team
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* @link https://codeigniter.com/userguide3/helpers/date_helper.html
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*/
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// ------------------------------------------------------------------------
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if ( ! function_exists('now'))
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{
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/**
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* Get "now" time
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*
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* Returns time() based on the timezone parameter or on the
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* "time_reference" setting
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*
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* @param string
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* @return int
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*/
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function now($timezone = NULL)
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{
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if (empty($timezone))
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{
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$timezone = config_item('time_reference');
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}
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if ($timezone === 'local' OR $timezone === date_default_timezone_get())
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{
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return time();
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}
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$datetime = new DateTime('now', new DateTimeZone($timezone));
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sscanf($datetime->format('j-n-Y G:i:s'), '%d-%d-%d %d:%d:%d', $day, $month, $year, $hour, $minute, $second);
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return mktime($hour, $minute, $second, $month, $day, $year);
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('mdate'))
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{
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/**
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* Convert MySQL Style Datecodes
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*
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* This function is identical to PHPs date() function,
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* except that it allows date codes to be formatted using
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* the MySQL style, where each code letter is preceded
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* with a percent sign: %Y %m %d etc...
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*
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* The benefit of doing dates this way is that you don't
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* have to worry about escaping your text letters that
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* match the date codes.
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*
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* @param string
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* @param int
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* @return int
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*/
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function mdate($datestr = '', $time = '')
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{
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if ($datestr === '')
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{
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return '';
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}
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elseif (empty($time))
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{
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$time = now();
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}
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$datestr = str_replace(
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'%\\',
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'',
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preg_replace('/([a-z]+?){1}/i', '\\\\\\1', $datestr)
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);
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return date($datestr, $time);
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('timespan'))
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{
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/**
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* Timespan
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*
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* Returns a span of seconds in this format:
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* 10 days 14 hours 36 minutes 47 seconds
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*
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* @param int a number of seconds
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* @param int Unix timestamp
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* @param int a number of display units
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* @return string
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*/
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function timespan($seconds = 1, $time = '', $units = 7)
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{
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$CI =& get_instance();
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$CI->lang->load('date');
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is_numeric($seconds) OR $seconds = 1;
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is_numeric($time) OR $time = time();
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is_numeric($units) OR $units = 7;
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$seconds = ($time <= $seconds) ? 1 : $time - $seconds;
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$str = array();
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$years = floor($seconds / 31557600);
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if ($years > 0)
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{
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$str[] = $years.' '.$CI->lang->line($years > 1 ? 'date_years' : 'date_year');
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}
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$seconds -= $years * 31557600;
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$months = floor($seconds / 2629743);
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if (count($str) < $units && ($years > 0 OR $months > 0))
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{
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if ($months > 0)
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{
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$str[] = $months.' '.$CI->lang->line($months > 1 ? 'date_months' : 'date_month');
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}
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$seconds -= $months * 2629743;
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}
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$weeks = floor($seconds / 604800);
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if (count($str) < $units && ($years > 0 OR $months > 0 OR $weeks > 0))
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{
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if ($weeks > 0)
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{
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$str[] = $weeks.' '.$CI->lang->line($weeks > 1 ? 'date_weeks' : 'date_week');
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}
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$seconds -= $weeks * 604800;
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}
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$days = floor($seconds / 86400);
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if (count($str) < $units && ($months > 0 OR $weeks > 0 OR $days > 0))
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{
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if ($days > 0)
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{
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$str[] = $days.' '.$CI->lang->line($days > 1 ? 'date_days' : 'date_day');
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}
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$seconds -= $days * 86400;
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}
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$hours = floor($seconds / 3600);
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if (count($str) < $units && ($days > 0 OR $hours > 0))
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{
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if ($hours > 0)
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{
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$str[] = $hours.' '.$CI->lang->line($hours > 1 ? 'date_hours' : 'date_hour');
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}
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$seconds -= $hours * 3600;
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}
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$minutes = floor($seconds / 60);
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if (count($str) < $units && ($days > 0 OR $hours > 0 OR $minutes > 0))
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{
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if ($minutes > 0)
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{
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$str[] = $minutes.' '.$CI->lang->line($minutes > 1 ? 'date_minutes' : 'date_minute');
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}
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$seconds -= $minutes * 60;
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}
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if (count($str) === 0)
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{
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$str[] = $seconds.' '.$CI->lang->line($seconds > 1 ? 'date_seconds' : 'date_second');
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}
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return implode(', ', $str);
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('days_in_month'))
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{
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/**
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* Number of days in a month
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*
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* Takes a month/year as input and returns the number of days
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* for the given month/year. Takes leap years into consideration.
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*
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* @param int a numeric month
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* @param int a numeric year
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* @return int
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*/
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function days_in_month($month = 0, $year = '')
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{
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if ($month < 1 OR $month > 12)
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{
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return 0;
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}
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elseif ( ! is_numeric($year) OR strlen($year) !== 4)
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{
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$year = date('Y');
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}
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if (defined('CAL_GREGORIAN'))
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{
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return cal_days_in_month(CAL_GREGORIAN, $month, $year);
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}
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if ($year >= 1970)
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{
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return (int) date('t', mktime(12, 0, 0, $month, 1, $year));
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}
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if ($month == 2)
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{
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if ($year % 400 === 0 OR ($year % 4 === 0 && $year % 100 !== 0))
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{
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return 29;
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}
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}
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$days_in_month = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
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return $days_in_month[$month - 1];
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('local_to_gmt'))
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{
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/**
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* Converts a local Unix timestamp to GMT
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*
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* @param int Unix timestamp
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* @return int
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*/
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function local_to_gmt($time = '')
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{
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if ($time === '')
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{
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$time = time();
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}
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return mktime(
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gmdate('G', $time),
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gmdate('i', $time),
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gmdate('s', $time),
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gmdate('n', $time),
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gmdate('j', $time),
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gmdate('Y', $time)
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);
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('gmt_to_local'))
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{
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/**
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* Converts GMT time to a localized value
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*
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* Takes a Unix timestamp (in GMT) as input, and returns
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* at the local value based on the timezone and DST setting
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* submitted
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*
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* @param int Unix timestamp
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* @param string timezone
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* @param bool whether DST is active
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* @return int
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*/
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function gmt_to_local($time = '', $timezone = 'UTC', $dst = FALSE)
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{
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if ($time === '')
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{
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return now();
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}
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$time += timezones($timezone) * 3600;
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return ($dst === TRUE) ? $time + 3600 : $time;
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('mysql_to_unix'))
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{
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/**
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* Converts a MySQL Timestamp to Unix
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*
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* @param int MySQL timestamp YYYY-MM-DD HH:MM:SS
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* @return int Unix timstamp
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*/
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function mysql_to_unix($time = '')
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{
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// We'll remove certain characters for backward compatibility
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// since the formatting changed with MySQL 4.1
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// YYYY-MM-DD HH:MM:SS
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$time = str_replace(array('-', ':', ' '), '', $time);
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// YYYYMMDDHHMMSS
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return mktime(
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substr($time, 8, 2),
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substr($time, 10, 2),
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substr($time, 12, 2),
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substr($time, 4, 2),
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substr($time, 6, 2),
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substr($time, 0, 4)
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);
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('unix_to_human'))
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{
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/**
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* Unix to "Human"
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*
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* Formats Unix timestamp to the following prototype: 2006-08-21 11:35 PM
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*
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* @param int Unix timestamp
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* @param bool whether to show seconds
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* @param string format: us or euro
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* @return string
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*/
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function unix_to_human($time = '', $seconds = FALSE, $fmt = 'us')
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{
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$r = date('Y', $time).'-'.date('m', $time).'-'.date('d', $time).' ';
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if ($fmt === 'us')
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{
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$r .= date('h', $time).':'.date('i', $time);
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}
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else
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{
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$r .= date('H', $time).':'.date('i', $time);
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}
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if ($seconds)
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{
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$r .= ':'.date('s', $time);
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}
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if ($fmt === 'us')
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{
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return $r.' '.date('A', $time);
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}
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return $r;
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('human_to_unix'))
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{
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/**
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* Convert "human" date to GMT
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*
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* Reverses the above process
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*
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* @param string format: us or euro
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* @return int
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*/
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function human_to_unix($datestr = '')
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{
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if ($datestr === '')
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{
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return FALSE;
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}
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$datestr = preg_replace('/\040+/', ' ', trim($datestr));
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if ( ! preg_match('/^(\d{2}|\d{4})\-[0-9]{1,2}\-[0-9]{1,2}\s[0-9]{1,2}:[0-9]{1,2}(?::[0-9]{1,2})?(?:\s[AP]M)?$/i', $datestr))
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{
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return FALSE;
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}
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sscanf($datestr, '%d-%d-%d %s %s', $year, $month, $day, $time, $ampm);
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sscanf($time, '%d:%d:%d', $hour, $min, $sec);
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isset($sec) OR $sec = 0;
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if (isset($ampm))
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{
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$ampm = strtolower($ampm);
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if ($ampm[0] === 'p' && $hour < 12)
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{
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$hour += 12;
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}
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elseif ($ampm[0] === 'a' && $hour === 12)
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{
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$hour = 0;
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}
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}
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return mktime($hour, $min, $sec, $month, $day, $year);
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('nice_date'))
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{
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/**
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* Turns many "reasonably-date-like" strings into something
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* that is actually useful. This only works for dates after unix epoch.
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*
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* @deprecated 3.1.3 Use DateTime::createFromFormat($input_format, $input)->format($output_format);
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* @param string The terribly formatted date-like string
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* @param string Date format to return (same as php date function)
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* @return string
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*/
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function nice_date($bad_date = '', $format = FALSE)
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{
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if (empty($bad_date))
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{
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return 'Unknown';
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}
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elseif (empty($format))
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{
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$format = 'U';
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}
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// Date like: YYYYMM
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if (preg_match('/^\d{6}$/i', $bad_date))
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{
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if (in_array(substr($bad_date, 0, 2), array('19', '20')))
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{
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$year = substr($bad_date, 0, 4);
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$month = substr($bad_date, 4, 2);
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}
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else
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{
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$month = substr($bad_date, 0, 2);
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$year = substr($bad_date, 2, 4);
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}
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return date($format, strtotime($year.'-'.$month.'-01'));
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}
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// Date Like: YYYYMMDD
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if (preg_match('/^\d{8}$/i', $bad_date, $matches))
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{
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return DateTime::createFromFormat('Ymd', $bad_date)->format($format);
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}
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// Date Like: MM-DD-YYYY __or__ M-D-YYYY (or anything in between)
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if (preg_match('/^(\d{1,2})-(\d{1,2})-(\d{4})$/i', $bad_date, $matches))
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{
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return date($format, strtotime($matches[3].'-'.$matches[1].'-'.$matches[2]));
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}
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// Any other kind of string, when converted into UNIX time,
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// produces "0 seconds after epoc..." is probably bad...
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// return "Invalid Date".
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if (date('U', strtotime($bad_date)) === '0')
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{
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return 'Invalid Date';
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}
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// It's probably a valid-ish date format already
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return date($format, strtotime($bad_date));
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('timezone_menu'))
|
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{
|
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/**
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* Timezone Menu
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*
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* Generates a drop-down menu of timezones.
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*
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* @param string timezone
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* @param string classname
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* @param string menu name
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* @param mixed attributes
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* @return string
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*/
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function timezone_menu($default = 'UTC', $class = '', $name = 'timezones', $attributes = '')
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{
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$CI =& get_instance();
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$CI->lang->load('date');
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$default = ($default === 'GMT') ? 'UTC' : $default;
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$menu = '<select name="'.$name.'"';
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if ($class !== '')
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{
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$menu .= ' class="'.$class.'"';
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}
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$menu .= _stringify_attributes($attributes).">\n";
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foreach (timezones() as $key => $val)
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{
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$selected = ($default === $key) ? ' selected="selected"' : '';
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$menu .= '<option value="'.$key.'"'.$selected.'>'.$CI->lang->line($key)."</option>\n";
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}
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return $menu.'</select>';
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}
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}
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// ------------------------------------------------------------------------
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|
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if ( ! function_exists('timezones'))
|
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{
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/**
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* Timezones
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|
*
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|
* Returns an array of timezones. This is a helper function
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|
* for various other ones in this library
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|
*
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|
* @param string timezone
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* @return string
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*/
|
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function timezones($tz = '')
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{
|
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// Note: Don't change the order of these even though
|
|
// some items appear to be in the wrong order
|
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|
|
$zones = array(
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'UM12' => -12,
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'UM11' => -11,
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'UM10' => -10,
|
|
'UM95' => -9.5,
|
|
'UM9' => -9,
|
|
'UM8' => -8,
|
|
'UM7' => -7,
|
|
'UM6' => -6,
|
|
'UM5' => -5,
|
|
'UM45' => -4.5,
|
|
'UM4' => -4,
|
|
'UM35' => -3.5,
|
|
'UM3' => -3,
|
|
'UM2' => -2,
|
|
'UM1' => -1,
|
|
'UTC' => 0,
|
|
'UP1' => +1,
|
|
'UP2' => +2,
|
|
'UP3' => +3,
|
|
'UP35' => +3.5,
|
|
'UP4' => +4,
|
|
'UP45' => +4.5,
|
|
'UP5' => +5,
|
|
'UP55' => +5.5,
|
|
'UP575' => +5.75,
|
|
'UP6' => +6,
|
|
'UP65' => +6.5,
|
|
'UP7' => +7,
|
|
'UP8' => +8,
|
|
'UP875' => +8.75,
|
|
'UP9' => +9,
|
|
'UP95' => +9.5,
|
|
'UP10' => +10,
|
|
'UP105' => +10.5,
|
|
'UP11' => +11,
|
|
'UP115' => +11.5,
|
|
'UP12' => +12,
|
|
'UP1275' => +12.75,
|
|
'UP13' => +13,
|
|
'UP14' => +14
|
|
);
|
|
|
|
if ($tz === '')
|
|
{
|
|
return $zones;
|
|
}
|
|
|
|
return isset($zones[$tz]) ? $zones[$tz] : 0;
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('date_range'))
|
|
{
|
|
/**
|
|
* Date range
|
|
*
|
|
* Returns a list of dates within a specified period.
|
|
*
|
|
* @param int unix_start UNIX timestamp of period start date
|
|
* @param int unix_end|days UNIX timestamp of period end date
|
|
* or interval in days.
|
|
* @param mixed is_unix Specifies whether the second parameter
|
|
* is a UNIX timestamp or a day interval
|
|
* - TRUE or 'unix' for a timestamp
|
|
* - FALSE or 'days' for an interval
|
|
* @param string date_format Output date format, same as in date()
|
|
* @return array
|
|
*/
|
|
function date_range($unix_start = '', $mixed = '', $is_unix = TRUE, $format = 'Y-m-d')
|
|
{
|
|
if ($unix_start == '' OR $mixed == '' OR $format == '')
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
$is_unix = ! ( ! $is_unix OR $is_unix === 'days');
|
|
|
|
// Validate input and try strtotime() on invalid timestamps/intervals, just in case
|
|
if ( ( ! ctype_digit((string) $unix_start) && ($unix_start = @strtotime($unix_start)) === FALSE)
|
|
OR ( ! ctype_digit((string) $mixed) && ($is_unix === FALSE OR ($mixed = @strtotime($mixed)) === FALSE))
|
|
OR ($is_unix === TRUE && $mixed < $unix_start))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
if ($is_unix && ($unix_start == $mixed OR date($format, $unix_start) === date($format, $mixed)))
|
|
{
|
|
return array(date($format, $unix_start));
|
|
}
|
|
|
|
$range = array();
|
|
|
|
$from = new DateTime();
|
|
$from->setTimestamp($unix_start);
|
|
|
|
if ($is_unix)
|
|
{
|
|
$arg = new DateTime();
|
|
$arg->setTimestamp($mixed);
|
|
}
|
|
else
|
|
{
|
|
$arg = (int) $mixed;
|
|
}
|
|
|
|
$period = new DatePeriod($from, new DateInterval('P1D'), $arg);
|
|
foreach ($period as $date)
|
|
{
|
|
$range[] = $date->format($format);
|
|
}
|
|
|
|
/* If a period end date was passed to the DatePeriod constructor, it might not
|
|
* be in our results. Not sure if this is a bug or it's just possible because
|
|
* the end date might actually be less than 24 hours away from the previously
|
|
* generated DateTime object, but either way - we have to append it manually.
|
|
*/
|
|
if ( ! is_int($arg) && $range[count($range) - 1] !== $arg->format($format))
|
|
{
|
|
$range[] = $arg->format($format);
|
|
}
|
|
|
|
return $range;
|
|
}
|
|
}
|