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796 lines
19 KiB
796 lines
19 KiB
<?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 - 2016, 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 - 2016, British Columbia Institute of Technology (http://bcit.ca/) |
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* @license http://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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/** |
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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/user_guide/helpers/date_helper.html |
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*/ |
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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, $second); |
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|
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return mktime($hour, $minute, $second, $month, $day, $year); |
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} |
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} |
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// ------------------------------------------------------------------------ |
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|
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if ( ! function_exists('mdate')) |
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{ |
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/** |
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* Convert MySQL Style Datecodes |
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* |
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* This function is identical to PHPs date() function, |
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* except that it allows date codes to be formatted using |
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* the MySQL style, where each code letter is preceded |
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* with a percent sign: %Y %m %d etc... |
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* |
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* The benefit of doing dates this way is that you don't |
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* have to worry about escaping your text letters that |
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* match the date codes. |
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* |
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* @param string |
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* @param int |
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* @return int |
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*/ |
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function mdate($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', $datestr) |
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); |
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|
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return date($datestr, $time); |
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} |
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} |
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// ------------------------------------------------------------------------ |
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if ( ! function_exists('standard_date')) |
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{ |
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/** |
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* Standard Date |
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* |
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* Returns a date formatted according to the submitted standard. |
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* |
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* As of PHP 5.2, the DateTime extension provides constants that |
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* serve for the exact same purpose and are used with date(). |
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* |
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* @todo Remove in version 3.1+. |
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* @deprecated 3.0.0 Use PHP's native date() instead. |
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* @link http://www.php.net/manual/en/class.datetime.php#datetime.constants.types |
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* |
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* @example date(DATE_RFC822, now()); // default |
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* @example date(DATE_W3C, $time); // a different format and time |
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* |
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* @param string $fmt = 'DATE_RFC822' the chosen format |
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* @param int $time = NULL Unix timestamp |
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* @return string |
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*/ |
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function standard_date($fmt = 'DATE_RFC822', $time = NULL) |
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{ |
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if (empty($time)) |
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{ |
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$time = now(); |
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} |
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|
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// Procedural style pre-defined constants from the DateTime extension |
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if (strpos($fmt, 'DATE_') !== 0 OR defined($fmt) === FALSE) |
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{ |
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return FALSE; |
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} |
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return date(constant($fmt), $time); |
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} |
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} |
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// ------------------------------------------------------------------------ |
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if ( ! function_exists('timespan')) |
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{ |
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/** |
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* Timespan |
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* |
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* Returns a span of seconds in this format: |
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* 10 days 14 hours 36 minutes 47 seconds |
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* |
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* @param int a number of seconds |
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* @param int Unix timestamp |
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* @param int a number of display units |
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* @return string |
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*/ |
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function timespan($seconds = 1, $time = '', $units = 7) |
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{ |
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$CI =& get_instance(); |
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$CI->lang->load('date'); |
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|
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is_numeric($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 - $seconds; |
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|
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$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('-', ':', ' '), '', $time); |
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|
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// YYYYMMDDHHMMSS |
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return mktime( |
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substr($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', $time).' '; |
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|
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if ($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', $time); |
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} |
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|
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if ($fmt === 'us') |
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{ |
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return $r.' '.date('A', $time); |
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} |
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return $r; |
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} |
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} |
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// ------------------------------------------------------------------------ |
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|
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if ( ! function_exists('human_to_unix')) |
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{ |
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/** |
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* Convert "human" date to GMT |
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* |
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* Reverses the above process |
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* |
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* @param string format: us or euro |
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* @return int |
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*/ |
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function human_to_unix($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($datestr)); |
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|
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if ( ! preg_match('/^(\d{2}|\d{4})\-[0-9]{1,2}\-[0-9]{1,2}\s[0-9]{1,2}:[0-9]{1,2}(?::[0-9]{1,2})?(?:\s[AP]M)?$/i', $datestr)) |
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{ |
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return FALSE; |
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} |
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|
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sscanf($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 $sec = 0; |
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|
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if (isset($ampm)) |
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{ |
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$ampm = strtolower($ampm); |
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|
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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, $year); |
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} |
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} |
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// ------------------------------------------------------------------------ |
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|
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if ( ! function_exists('nice_date')) |
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{ |
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/** |
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* Turns many "reasonably-date-like" strings into something |
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* that is actually useful. This only works for dates after unix epoch. |
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* |
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* @param string The terribly formatted date-like string |
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* @param string Date format to return (same as php date function) |
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* @return string |
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*/ |
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function nice_date($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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|
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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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|
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return date($format, strtotime($year.'-'.$month.'-01')); |
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} |
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|
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// Date Like: YYYYMMDD |
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if (preg_match('/^(\d{2})\d{2}(\d{4})$/i', $bad_date, $matches)) |
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{ |
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return date($format, strtotime($matches[1].'/01/'.$matches[2])); |
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} |
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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].'-'.$matches[2])); |
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} |
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|
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// Any other kind of string, when converted into UNIX time, |
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// produces "0 seconds after epoc..." is probably bad... |
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// return "Invalid Date". |
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if (date('U', strtotime($bad_date)) === '0') |
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{ |
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return 'Invalid Date'; |
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} |
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|
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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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// ------------------------------------------------------------------------ |
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|
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if ( ! function_exists('timezone_menu')) |
|
{ |
|
/** |
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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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$CI->lang->load('date'); |
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|
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$default = ($default === 'GMT') ? 'UTC' : $default; |
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|
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$menu = '<select name="'.$name.'"'; |
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|
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if ($class !== '') |
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{ |
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$menu .= ' class="'.$class.'"'; |
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} |
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|
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$menu .= _stringify_attributes($attributes).">\n"; |
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|
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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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|
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return $menu.'</select>'; |
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} |
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} |
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|
|
// ------------------------------------------------------------------------ |
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|
|
if ( ! function_exists('timezones')) |
|
{ |
|
/** |
|
* Timezones |
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* |
|
* Returns an array of timezones. This is a helper function |
|
* for various other ones in this library |
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* |
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* @param string timezone |
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* @return string |
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*/ |
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function timezones($tz = '') |
|
{ |
|
// Note: Don't change the order of these even though |
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// 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, |
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'UM95' => -9.5, |
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'UM9' => -9, |
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'UM8' => -8, |
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'UM7' => -7, |
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'UM6' => -6, |
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'UM5' => -5, |
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'UM45' => -4.5, |
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'UM4' => -4, |
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'UM35' => -3.5, |
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'UM3' => -3, |
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'UM2' => -2, |
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'UM1' => -1, |
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'UTC' => 0, |
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'UP1' => +1, |
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'UP2' => +2, |
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'UP3' => +3, |
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'UP35' => +3.5, |
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'UP4' => +4, |
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'UP45' => +4.5, |
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'UP5' => +5, |
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'UP55' => +5.5, |
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'UP575' => +5.75, |
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'UP6' => +6, |
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'UP65' => +6.5, |
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'UP7' => +7, |
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'UP8' => +8, |
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'UP875' => +8.75, |
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'UP9' => +9, |
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'UP95' => +9.5, |
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'UP10' => +10, |
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'UP105' => +10.5, |
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'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(); |
|
|
|
/* NOTE: Even though the DateTime object has many useful features, it appears that |
|
* it doesn't always handle properly timezones, when timestamps are passed |
|
* directly to its constructor. Neither of the following gave proper results: |
|
* |
|
* new DateTime('<timestamp>') |
|
* new DateTime('<timestamp>', '<timezone>') |
|
* |
|
* --- available in PHP 5.3: |
|
* |
|
* DateTime::createFromFormat('<format>', '<timestamp>') |
|
* DateTime::createFromFormat('<format>', '<timestamp>', '<timezone') |
|
* |
|
* ... so we'll have to set the timestamp after the object is instantiated. |
|
* Furthermore, in PHP 5.3 we can use DateTime::setTimestamp() to do that and |
|
* given that we have UNIX timestamps - we should use it. |
|
*/ |
|
$from = new DateTime(); |
|
|
|
if (is_php('5.3')) |
|
{ |
|
$from->setTimestamp($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; |
|
} |
|
|
|
$from->setDate(date('Y', $unix_start), date('n', $unix_start), date('j', $unix_start)); |
|
$from->setTime(date('G', $unix_start), date('i', $unix_start), date('s', $unix_start)); |
|
if ($is_unix) |
|
{ |
|
$arg = new DateTime(); |
|
$arg->setDate(date('Y', $mixed), date('n', $mixed), date('j', $mixed)); |
|
$arg->setTime(date('G', $mixed), date('i', $mixed), date('s', $mixed)); |
|
} |
|
else |
|
{ |
|
$arg = (int) $mixed; |
|
} |
|
$range[] = $from->format($format); |
|
|
|
if (is_int($arg)) // Day intervals |
|
{ |
|
do |
|
{ |
|
$from->modify('+1 day'); |
|
$range[] = $from->format($format); |
|
} |
|
while (--$arg > 0); |
|
} |
|
else // end date UNIX timestamp |
|
{ |
|
for ($from->modify('+1 day'), $end_check = $arg->format('Ymd'); $from->format('Ymd') < $end_check; $from->modify('+1 day')) |
|
{ |
|
$range[] = $from->format($format); |
|
} |
|
|
|
// Our loop only appended dates prior to our end date |
|
$range[] = $arg->format($format); |
|
} |
|
|
|
return $range; |
|
} |
|
}
|
|
|