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git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@3636 3807eeeb-6ff5-0310-8944-8be069107fe0
422 lines
No EOL
12 KiB
PHP
422 lines
No EOL
12 KiB
PHP
<?php
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/* SVN FILE: $Id$ */
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/**
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* Time Helper class file.
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*
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* PHP versions 4 and 5
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*
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* CakePHP : Rapid Development Framework <http://www.cakephp.org/>
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* Copyright (c) 2006, Cake Software Foundation, Inc.
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* 1785 E. Sahara Avenue, Suite 490-204
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* Las Vegas, Nevada 89104
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @filesource
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* @copyright Copyright (c) 2006, Cake Software Foundation, Inc.
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* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP Project
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* @package cake
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* @subpackage cake.cake.libs.view.helpers
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* @since CakePHP v 0.10.0.1076
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* @version $Revision$
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* @modifiedby $LastChangedBy$
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* @lastmodified $Date$
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License
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*/
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/**
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* Time Helper class for easy use of time data.
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*
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* Manipulation of time data.
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*
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* @package cake
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* @subpackage cake.cake.libs.view.helpers
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*/
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class TimeHelper extends Helper {
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/**
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* Returns given string trimmed to given length, adding an ending (default: "..") if necessary.
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*
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* @param string $string String to trim
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* @param integer $length Length of returned string, excluding ellipsis
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* @param string $ending Ending to be appended after trimmed string
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* @return string Trimmed string
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*/
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function trim($string, $length, $ending = '..') {
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return substr($string, 0, $length) . (strlen($string) > $length ? $ending : null);
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}
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/**
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* Returns a UNIX timestamp, given either a UNIX timestamp or a valid strtotime() date string.
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*
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* @param string $date_string Datetime string
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* @return string Formatted date string
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*/
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function fromString($date_string) {
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if (is_integer($date_string) || is_numeric($date_string)) {
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return intval($date_string);
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} else {
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return strtotime($date_string);
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}
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}
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/**
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* Returns a nicely formatted date string for given Datetime string.
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*
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* @param string $date_string Datetime string or Unix timestamp
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* @return string Formatted date string
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*/
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function nice($date_string = null) {
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if ($date_string != null) {
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$date = $this->fromString($date_string);
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} else {
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$date = time();
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}
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$ret = date("D, M jS Y, H:i", $date);
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return $this->output($ret);
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}
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/**
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* Returns a formatted descriptive date string for given datetime string.
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*
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* If the given date is today, the returned string could be "Today, 16:54".
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* If the given date was yesterday, the returned string could be "Yesterday, 16:54".
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* If $date_string's year is the current year, the returned string does not
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* include mention of the year.
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*
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* @param string $date_string Datetime string or Unix timestamp
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* @return string Described, relative date string
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*/
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function niceShort($date_string = null) {
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$date = $date_string ? $this->fromString($date_string) : time();
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$y = $this->isThisYear($date) ? '' : ' Y';
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if ($this->isToday($date)) {
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$ret = "Today, " . date("H:i", $date);
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} elseif($this->wasYesterday($date)) {
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$ret = "Yesterday, " . date("H:i", $date);
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} else {
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$ret = date("M jS{$y}, H:i", $date);
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}
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return $this->output($ret);
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}
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/**
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* Returns a partial SQL string to search for all records between two dates.
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*
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* @param string $date_string Datetime string or Unix timestamp
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* @param string $end Datetime string or Unix timestamp
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* @param string $field_name Name of database field to compare with
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* @return string Partial SQL string.
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*/
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function daysAsSql($begin, $end, $field_name) {
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$begin = $this->fromString($begin);
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$end = $this->fromString($end);
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$begin = date('Y-m-d', $begin) . ' 00:00:00';
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$end = date('Y-m-d', $end) . ' 23:59:59';
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$ret ="($field_name >= '$begin') AND ($field_name <= '$end')";
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return $this->output($ret);
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}
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/**
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* Returns a partial SQL string to search for all records between two times
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* occurring on the same day.
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*
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* @param string $date_string Datetime string or Unix timestamp
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* @param string $field_name Name of database field to compare with
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* @return string Partial SQL string.
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*/
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function dayAsSql($date_string, $field_name) {
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$date = $this->fromString($date_string);
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$ret = $this->daysAsSql($date_string, $date_string, $field_name);
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return $this->output($ret);
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}
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/**
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* Returns true if given datetime string is today.
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*
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* @param string $date_string Datetime string or Unix timestamp
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* @return boolean True if datetime string is today
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*/
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function isToday($date_string) {
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$date = $this->fromString($date_string);
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$ret = date('Y-m-d', $date) == date('Y-m-d', time());
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return $this->output($ret);
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}
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/**
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* Returns true if given datetime string is within this week
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* @param string $date_string
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* @return boolean True if datetime string is within current week
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*/
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function isThisWeek($date_string) {
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$date = $this->fromString($date_string) + 86400;
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return date('W Y', $date) == date('W Y', time());
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}
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/**
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* Returns true if given datetime string is within this month
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* @param string $date_string
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* @return boolean True if datetime string is within current month
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*/
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function isThisMonth($date_string) {
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$date = $this->fromString($date_string);
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return date('m Y',$date) == date('m Y', time());
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}
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/**
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* Returns true if given datetime string is within current year.
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*
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* @param string $date_string Datetime string or Unix timestamp
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* @return boolean True if datetime string is within current year
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*/
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function isThisYear($date_string) {
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$date = $this->fromString($date_string);
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$ret = date('Y', $date) == date('Y', time());
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return $this->output($ret);
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}
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/**
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* Returns true if given datetime string was yesterday.
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*
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* @param string $date_string Datetime string or Unix timestamp
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* @return boolean True if datetime string was yesterday
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*/
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function wasYesterday($date_string) {
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$date = $this->fromString($date_string);
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$ret = date('Y-m-d', $date) == date('Y-m-d', strtotime('yesterday'));
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return $this->output($ret);
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}
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/**
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* Returns true if given datetime string is tomorrow.
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*
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* @param string $date_string Datetime string or Unix timestamp
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* @return boolean True if datetime string was yesterday
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*/
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function isTomorrow($date_string) {
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$date = $this->fromString($date_string);
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$ret = date('Y-m-d', $date) == date('Y-m-d', strtotime('tomorrow'));
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return $this->output($ret);
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}
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/**
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* Returns a UNIX timestamp from a textual datetime description. Wrapper for PHP function strtotime().
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*
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* @param string $date_string Datetime string to be represented as a Unix timestamp
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* @return int Unix timestamp
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*/
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function toUnix($date_string) {
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$ret = strtotime($date_string);
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return $this->output($ret);
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}
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/**
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* Returns a date formatted for Atom RSS feeds.
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*
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* @param string $date_string Datetime string or Unix timestamp
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* @return string Formatted date string
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*/
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function toAtom($date_string) {
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$date = $this->fromString($date_string);
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$ret = date('Y-m-d\TH:i:s\Z', $date);
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return $this->output($ret);
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}
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/**
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* Formats date for RSS feeds
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*
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* @param string $date_string Datetime string or Unix timestamp
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* @return string Formatted date string
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*/
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function toRSS($date_string) {
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$date = TimeHelper::fromString($date_string);
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$ret = date("r", $date);
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return $this->output($ret);
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}
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/**
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* Returns either a relative date or a formatted date depending
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* on the difference between the current time and given datetime.
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* $datetime should be in a <i>strtotime</i>-parsable format, like MySQL's datetime datatype.
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*
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* Relative dates look something like this:
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* 3 weeks, 4 days ago
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* 15 seconds ago
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* Formatted dates look like this:
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* on 02/18/2004
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*
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* The returned string includes 'ago' or 'on' and assumes you'll properly add a word
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* like 'Posted ' before the function output.
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*
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* @param string $date_string Datetime string or Unix timestamp
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* @param string $format Default format if timestamp is used in $date_string
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* @param string $backwards False if $date_string is in the past, true if in the future
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* @return string Relative time string.
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*/
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function timeAgoInWords($datetime_string, $format = 'j/n/y', $backwards = false) {
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$datetime = $this->fromString($datetime_string);
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$in_seconds = $datetime;
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if ($backwards) {
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$diff = $in_seconds - time();
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} else {
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$diff = time() - $in_seconds;
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}
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$months = floor($diff / 2419200);
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$diff -= $months * 2419200;
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$weeks = floor($diff / 604800);
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$diff -= $weeks * 604800;
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$days = floor($diff / 86400);
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$diff -= $days * 86400;
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$hours = floor($diff / 3600);
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$diff -= $hours * 3600;
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$minutes = floor($diff / 60);
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$diff -= $minutes * 60;
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$seconds = $diff;
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if ($months > 0) {
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// over a month old, just show date (mm/dd/yyyy format)
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$relative_date = 'on ' . date($format, $in_seconds);
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$old = true;
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} else {
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$relative_date = '';
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$old = false;
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if ($weeks > 0) {
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// weeks and days
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$relative_date .= ($relative_date ? ', ' : '') . $weeks . ' week' . ($weeks > 1 ? 's' : '');
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$relative_date .= $days > 0 ? ($relative_date ? ', ' : '') . $days . ' day' . ($days > 1 ? 's' : '') : '';
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} elseif($days > 0) {
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// days and hours
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$relative_date .= ($relative_date ? ', ' : '') . $days . ' day' . ($days > 1 ? 's' : '');
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$relative_date .= $hours > 0 ? ($relative_date ? ', ' : '') . $hours . ' hour' . ($hours > 1 ? 's' : '') : '';
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} elseif($hours > 0) {
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// hours and minutes
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$relative_date .= ($relative_date ? ', ' : '') . $hours . ' hour' . ($hours > 1 ? 's' : '');
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$relative_date .= $minutes > 0 ? ($relative_date ? ', ' : '') . $minutes . ' minute' . ($minutes > 1 ? 's' : '') : '';
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} elseif($minutes > 0) {
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// minutes only
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$relative_date .= ($relative_date ? ', ' : '') . $minutes . ' minute' . ($minutes > 1 ? 's' : '');
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} else {
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// seconds only
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$relative_date .= ($relative_date ? ', ' : '') . $seconds . ' second' . ($seconds != 1 ? 's' : '');
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}
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}
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$ret = $relative_date;
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// show relative date and add proper verbiage
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if (!$backwards && !$old) {
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$ret .= ' ago';
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}
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return $this->output($ret);
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}
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/**
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* Alias for timeAgoInWords, but can also calculate dates in the future
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* @param string $date_string Datetime string or Unix timestamp
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* @param string $format Default format if timestamp is used in $date_string
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* @return string Relative time string.
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* @see timeAgoInWords
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*/
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function relativeTime($datetime_string, $format = 'j/n/y') {
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$date = strtotime($datetime_string);
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if (strtotime("now") > $date) {
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$ret = $this->timeAgoInWords($datetime_string, $format, false);
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} else {
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$ret = $this->timeAgoInWords($datetime_string, $format, true);
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}
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return $this->output($ret);
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}
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/**
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* Returns true if specified datetime was within the interval specified, else false.
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*
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* @param mixed $timeInterval the numeric value with space then time type. Example of valid types: 6 hours, 2 days, 1 minute.
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* @param mixed $date_string the datestring or unix timestamp to compare
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* @return boolean
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*/
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function wasWithinLast($timeInterval, $date_string) {
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$date = $this->fromString($date_string);
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$result = preg_split('/\\s/', $timeInterval);
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$numInterval = $result[0];
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$textInterval = $result[1];
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$currentTime = floor(time());
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$seconds = ($currentTime - floor($date));
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switch($textInterval) {
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case "seconds":
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case "second":
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$timePeriod = $seconds;
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$ret = $return;
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break;
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case "minutes":
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case "minute":
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$minutes = floor($seconds / 60);
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$timePeriod = $minutes;
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break;
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case "hours":
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case "hour":
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$hours = floor($seconds / 3600);
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$timePeriod = $hours;
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break;
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case "days":
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case "day":
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$days = floor($seconds / 86400);
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$timePeriod = $days;
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break;
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case "weeks":
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case "week":
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$weeks = floor($seconds / 604800);
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$timePeriod = $weeks;
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break;
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case "months":
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case "month":
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$months = floor($seconds / 2629743.83);
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$timePeriod = $months;
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break;
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case "years":
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case "year":
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$years = floor($seconds / 31556926);
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$timePeriod = $years;
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break;
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default:
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$days = floor($seconds / 86400);
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$timePeriod = $days;
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break;
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}
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if ($timePeriod <= $numInterval) {
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$ret = true;
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} else {
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$ret = false;
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}
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return $this->output($ret);
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}
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function gmt($string = null) {
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if ($string != null) {
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$string = $this->fromString($string);
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} else {
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$string = time();
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}
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$string = $this->fromString($string);
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$hour = intval(date("G", $string));
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$minute = intval(date("i", $string));
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$second = intval(date("s", $string));
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$month = intval(date("n", $string));
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$day = intval(date("j", $string));
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$year = intval(date("Y", $string));
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$return = gmmktime($hour, $minute, $second, $month, $day, $year);
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return $return;
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}
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function format($format = 'd-m-Y', $date) {
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return date($format, $this->fromString($date));
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}
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}
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?>
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