<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * * An open source application development framework for PHP 5.1.6 or newer * * @package CodeIgniter * @author ExpressionEngine Dev Team * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. * @license http://codeigniter.com/user_guide/license.html * @link http://codeigniter.com * @since Version 1.0 * @filesource */ // ------------------------------------------------------------------------ /** * CodeIgniter Date Helpers * * @package CodeIgniter * @subpackage Helpers * @category Helpers * @author ExpressionEngine Dev Team * @link http://codeigniter.com/user_guide/helpers/date_helper.html */ // ------------------------------------------------------------------------ /** * Get "now" time * * Returns time() or its GMT equivalent based on the config file preference * * @access public * @return integer */ if ( ! function_exists('now')) { function now() { $CI =& get_instance(); if (strtolower($CI->config->item('time_reference')) == 'gmt') { $now = time(); $system_time = mktime(gmdate("H", $now), gmdate("i", $now), gmdate("s", $now), gmdate("m", $now), gmdate("d", $now), gmdate("Y", $now)); if (strlen($system_time) < 10) { $system_time = time(); log_message('error', 'The Date class could not set a proper GMT timestamp so the local time() value was used.'); } return $system_time; } return time(); } } // ------------------------------------------------------------------------ /** * Convert MySQL Style Datecodes * * This function is identical to PHPs date() function, * except that it allows date codes to be formatted using * the MySQL style, where each code letter is preceded * with a percent sign: %Y %m %d etc... * * The benefit of doing dates this way is that you don't * have to worry about escaping your text letters that * match the date codes. * * @access public * @param string * @param integer * @return integer */ if ( ! function_exists('mdate')) { function mdate($datestr = '', $time = '') { if ($datestr == '') { return ''; } $time = ($time == '') ? now() : $time; $datestr = str_replace( '%\\', '', preg_replace("/([a-z]+?){1}/i", "\\\\\\1", $datestr) ); return date($datestr, $time); } } // ------------------------------------------------------------------------ /** * Standard Date * * Returns a date formatted according to the submitted standard. * * @access public * @param string the chosen format * @param integer Unix timestamp * @return string */ if ( ! function_exists('standard_date')) { function standard_date($fmt = 'DATE_RFC822', $time = '') { $formats = array( 'DATE_ATOM' => '%Y-%m-%dT%H:%i:%s%Q', 'DATE_COOKIE' => '%l, %d-%M-%y %H:%i:%s UTC', 'DATE_ISO8601' => '%Y-%m-%dT%H:%i:%s%Q', 'DATE_RFC822' => '%D, %d %M %y %H:%i:%s %O', 'DATE_RFC850' => '%l, %d-%M-%y %H:%m:%i UTC', 'DATE_RFC1036' => '%D, %d %M %y %H:%i:%s %O', 'DATE_RFC1123' => '%D, %d %M %Y %H:%i:%s %O', 'DATE_RSS' => '%D, %d %M %Y %H:%i:%s %O', 'DATE_W3C' => '%Y-%m-%dT%H:%i:%s%Q' ); if ( ! isset($formats[$fmt])) { return FALSE; } return mdate($formats[$fmt], $time); } } // ------------------------------------------------------------------------ /** * Timespan * * Returns a span of seconds in this format: * 10 days 14 hours 36 minutes 47 seconds * * @access public * @param integer a number of seconds * @param integer Unix timestamp * @return integer */ if ( ! function_exists('timespan')) { function timespan($seconds = 1, $time = '') { $CI =& get_instance(); $CI->lang->load('date'); if ( ! is_numeric($seconds)) { $seconds = 1; } if ( ! is_numeric($time)) { $time = time(); } $seconds = ($time <= $seconds) ? 1 : $time - $seconds; $str = ''; $years = floor($seconds / 31536000); if ($years > 0) { $str .= $years.' '.$CI->lang->line((($years > 1) ? 'date_years' : 'date_year')).', '; } $seconds -= $years * 31536000; $months = floor($seconds / 2628000); if ($years > 0 OR $months > 0) { if ($months > 0) { $str .= $months.' '.$CI->lang->line((($months > 1) ? 'date_months' : 'date_month')).', '; } $seconds -= $months * 2628000; } $weeks = floor($seconds / 604800); if ($years > 0 OR $months > 0 OR $weeks > 0) { if ($weeks > 0) { $str .= $weeks.' '.$CI->lang->line((($weeks > 1) ? 'date_weeks' : 'date_week')).', '; } $seconds -= $weeks * 604800; } $days = floor($seconds / 86400); if ($months > 0 OR $weeks > 0 OR $days > 0) { if ($days > 0) { $str .= $days.' '.$CI->lang->line((($days > 1) ? 'date_days' : 'date_day')).', '; } $seconds -= $days * 86400; } $hours = floor($seconds / 3600); if ($days > 0 OR $hours > 0) { if ($hours > 0) { $str .= $hours.' '.$CI->lang->line((($hours > 1) ? 'date_hours' : 'date_hour')).', '; } $seconds -= $hours * 3600; } $minutes = floor($seconds / 60); if ($days > 0 OR $hours > 0 OR $minutes > 0) { if ($minutes > 0) { $str .= $minutes.' '.$CI->lang->line((($minutes > 1) ? 'date_minutes' : 'date_minute')).', '; } $seconds -= $minutes * 60; } if ($str == '') { $str .= $seconds.' '.$CI->lang->line((($seconds > 1) ? 'date_seconds' : 'date_second')).', '; } return substr(trim($str), 0, -1); } } // ------------------------------------------------------------------------ /** * Number of days in a month * * Takes a month/year as input and returns the number of days * for the given month/year. Takes leap years into consideration. * * @access public * @param integer a numeric month * @param integer a numeric year * @return integer */ if ( ! function_exists('days_in_month')) { function days_in_month($month = 0, $year = '') { if ($month < 1 OR $month > 12) { return 0; } if ( ! is_numeric($year) OR strlen($year) != 4) { $year = date('Y'); } if ($month == 2) { if ($year % 400 == 0 OR ($year % 4 == 0 AND $year % 100 != 0)) { return 29; } } $days_in_month = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); return $days_in_month[$month - 1]; } } // ------------------------------------------------------------------------ /** * Converts a local Unix timestamp to GMT * * @access public * @param integer Unix timestamp * @return integer */ if ( ! function_exists('local_to_gmt')) { function local_to_gmt($time = '') { if ($time == '') { $time = time(); } return mktime( gmdate("H", $time), gmdate("i", $time), gmdate("s", $time), gmdate("m", $time), gmdate("d", $time), gmdate("Y", $time) ); } } // ------------------------------------------------------------------------ /** * Converts GMT time to a localized value * * Takes a Unix timestamp (in GMT) as input, and returns * at the local value based on the timezone and DST setting * submitted * * @access public * @param integer Unix timestamp * @param string timezone * @param bool whether DST is active * @return integer */ if ( ! function_exists('gmt_to_local')) { function gmt_to_local($time = '', $timezone = 'UTC', $dst = FALSE) { if ($time == '') { return now(); } $time += timezones($timezone) * 3600; if ($dst == TRUE) { $time += 3600; } return $time; } } // ------------------------------------------------------------------------ /** * Converts a MySQL Timestamp to Unix * * @access public * @param integer Unix timestamp * @return integer */ if ( ! function_exists('mysql_to_unix')) { function mysql_to_unix($time = '') { // We'll remove certain characters for backward compatibility // since the formatting changed with MySQL 4.1 // YYYY-MM-DD HH:MM:SS $time = str_replace('-', '', $time); $time = str_replace(':', '', $time); $time = str_replace(' ', '', $time); // YYYYMMDDHHMMSS return mktime( substr($time, 8, 2), substr($time, 10, 2), substr($time, 12, 2), substr($time, 4, 2), substr($time, 6, 2), substr($time, 0, 4) ); } } // ------------------------------------------------------------------------ /** * Unix to "Human" * * Formats Unix timestamp to the following prototype: 2006-08-21 11:35 PM * * @access public * @param integer Unix timestamp * @param bool whether to show seconds * @param string format: us or euro * @return string */ if ( ! function_exists('unix_to_human')) { function unix_to_human($time = '', $seconds = FALSE, $fmt = 'us') { $r = date('Y', $time).'-'.date('m', $time).'-'.date('d', $time).' '; if ($fmt == 'us') { $r .= date('h', $time).':'.date('i', $time); } else { $r .= date('H', $time).':'.date('i', $time); } if ($seconds) { $r .= ':'.date('s', $time); } if ($fmt == 'us') { $r .= ' '.date('A', $time); } return $r; } } // ------------------------------------------------------------------------ /** * Convert "human" date to GMT * * Reverses the above process * * @access public * @param string format: us or euro * @return integer */ if ( ! function_exists('human_to_unix')) { function human_to_unix($datestr = '') { if ($datestr == '') { return FALSE; } $datestr = trim($datestr); $datestr = preg_replace("/\040+/", ' ', $datestr); if ( ! preg_match('/^[0-9]{2,4}\-[0-9]{1,2}\-[0-9]{1,2}\s[0-9]{1,2}:[0-9]{1,2}(?::[0-9]{1,2})?(?:\s[AP]M)?$/i', $datestr)) { return FALSE; } $split = explode(' ', $datestr); $ex = explode("-", $split['0']); $year = (strlen($ex['0']) == 2) ? '20'.$ex['0'] : $ex['0']; $month = (strlen($ex['1']) == 1) ? '0'.$ex['1'] : $ex['1']; $day = (strlen($ex['2']) == 1) ? '0'.$ex['2'] : $ex['2']; $ex = explode(":", $split['1']); $hour = (strlen($ex['0']) == 1) ? '0'.$ex['0'] : $ex['0']; $min = (strlen($ex['1']) == 1) ? '0'.$ex['1'] : $ex['1']; if (isset($ex['2']) && preg_match('/[0-9]{1,2}/', $ex['2'])) { $sec = (strlen($ex['2']) == 1) ? '0'.$ex['2'] : $ex['2']; } else { // Unless specified, seconds get set to zero. $sec = '00'; } if (isset($split['2'])) { $ampm = strtolower($split['2']); if (substr($ampm, 0, 1) == 'p' AND $hour < 12) { $hour = $hour + 12; } if (substr($ampm, 0, 1) == 'a' AND $hour == 12) { $hour = '00'; } if (strlen($hour) == 1) { $hour = '0'.$hour; } } return mktime($hour, $min, $sec, $month, $day, $year); } } // ------------------------------------------------------------------------ /** * Turns many "reasonably-date-like" strings into something * that is actually useful. This only works for dates after unix epoch. * * @access public * @param string The terribly formatted date-like string * @param string Date format to return (same as php date function) * @return string */ if ( ! function_exists('nice_date')) { function nice_date($bad_date = '', $format = FALSE) { if (empty($bad_date)) { return 'Unknown'; } // Date like: YYYYMM if (preg_match('/^\d{6}$/', $bad_date)) { if (in_array(substr($bad_date, 0, 2),array('19', '20'))) { $year = substr($bad_date, 0, 4); $month = substr($bad_date, 4, 2); } else { $month = substr($bad_date, 0, 2); $year = substr($bad_date, 2, 4); } return date($format, strtotime($year . '-' . $month . '-01')); } // Date Like: YYYYMMDD if (preg_match('/^\d{8}$/',$bad_date)) { $month = substr($bad_date, 0, 2); $day = substr($bad_date, 2, 2); $year = substr($bad_date, 4, 4); return date($format, strtotime($month . '/01/' . $year)); } // Date Like: MM-DD-YYYY __or__ M-D-YYYY (or anything in between) if (preg_match('/^\d{1,2}-\d{1,2}-\d{4}$/',$bad_date)) { list($m, $d, $y) = explode('-', $bad_date); return date($format, strtotime("{$y}-{$m}-{$d}")); } // Any other kind of string, when converted into UNIX time, // produces "0 seconds after epoc..." is probably bad... // return "Invalid Date". if (date('U', strtotime($bad_date)) == '0') { return "Invalid Date"; } // It's probably a valid-ish date format already return date($format, strtotime($bad_date)); } } // ------------------------------------------------------------------------ /** * Timezone Menu * * Generates a drop-down menu of timezones. * * @access public * @param string timezone * @param string classname * @param string menu name * @return string */ if ( ! function_exists('timezone_menu')) { function timezone_menu($default = 'UTC', $class = "", $name = 'timezones') { $CI =& get_instance(); $CI->lang->load('date'); $default = ($default == 'GMT') ? 'UTC' : $default; $menu = '<select name="'.$name.'"'; if ($class != '') { $menu .= ' class="'.$class.'"'; } $menu .= ">\n"; foreach (timezones() as $key => $val) { $selected = ($default == $key) ? " selected='selected'" : ''; $menu .= "<option value='{$key}'{$selected}>".$CI->lang->line($key)."</option>\n"; } $menu .= "</select>"; return $menu; } } // ------------------------------------------------------------------------ /** * Timezones * * Returns an array of timezones. This is a helper function * for various other ones in this library * * @access public * @param string timezone * @return string */ if ( ! function_exists('timezones')) { function timezones($tz = '') { // Note: Don't change the order of these even though // some items appear to be in the wrong order $zones = array( 'UM12' => -12, 'UM11' => -11, 'UM10' => -10, 'UM95' => -9.5, 'UM9' => -9, 'UM8' => -8, 'UM7' => -7, 'UM6' => -6, 'UM5' => -5, 'UM45' => -4.5, 'UM4' => -4, 'UM35' => -3.5, 'UM3' => -3, 'UM2' => -2, 'UM1' => -1, 'UTC' => 0, 'UP1' => +1, 'UP2' => +2, 'UP3' => +3, 'UP35' => +3.5, 'UP4' => +4, 'UP45' => +4.5, 'UP5' => +5, 'UP55' => +5.5, 'UP575' => +5.75, 'UP6' => +6, 'UP65' => +6.5, 'UP7' => +7, 'UP8' => +8, 'UP875' => +8.75, 'UP9' => +9, 'UP95' => +9.5, 'UP10' => +10, 'UP105' => +10.5, 'UP11' => +11, 'UP115' => +11.5, 'UP12' => +12, 'UP1275' => +12.75, 'UP13' => +13, 'UP14' => +14 ); if ($tz == '') { return $zones; } $tz = ($tz == 'GMT') ? 'UTC' : $tz; return ( ! isset($zones[$tz])) ? 0 : $zones[$tz]; } } /* End of file date_helper.php */ /* Location: ./system/helpers/date_helper.php */