1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (https://nette.org)
  5:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  6:  */
  7: 
  8: namespace Nette;
  9: 
 10: use Nette;
 11: 
 12: 
 13: /**
 14:  * DateTime with serialization and timestamp support for PHP 5.2.
 15:  *
 16:  * @author     David Grudl
 17:  */
 18: class DateTime extends \DateTime
 19: {
 20:     /** minute in seconds */
 21:     const MINUTE = 60;
 22: 
 23:     /** hour in seconds */
 24:     const HOUR = 3600;
 25: 
 26:     /** day in seconds */
 27:     const DAY = 86400;
 28: 
 29:     /** week in seconds */
 30:     const WEEK = 604800;
 31: 
 32:     /** average month in seconds */
 33:     const MONTH = 2629800;
 34: 
 35:     /** average year in seconds */
 36:     const YEAR = 31557600;
 37: 
 38: 
 39:     /**
 40:      * DateTime object factory.
 41:      * @param  string|int|\DateTime
 42:      * @return DateTime
 43:      */
 44:     public static function from($time)
 45:     {
 46:         if ($time instanceof \DateTime || $time instanceof \DateTimeInterface) {
 47:             return new static($time->format('Y-m-d H:i:s'), $time->getTimezone());
 48: 
 49:         } elseif (is_numeric($time)) {
 50:             if ($time <= self::YEAR) {
 51:                 $time += time();
 52:             }
 53:             $tmp = new static('@' . $time);
 54:             $tmp->setTimeZone(new \DateTimeZone(date_default_timezone_get()));
 55:             return $tmp;
 56: 
 57:         } else { // textual or NULL
 58:             return new static($time);
 59:         }
 60:     }
 61: 
 62: 
 63:     /**
 64:      * @return string
 65:      */
 66:     public function __toString()
 67:     {
 68:         return $this->format('Y-m-d H:i:s');
 69:     }
 70: 
 71: 
 72:     /**
 73:      * @param  string
 74:      * @return self
 75:      */
 76:     public function modifyClone($modify = '')
 77:     {
 78:         $dolly = clone $this;
 79:         return $modify ? $dolly->modify($modify) : $dolly;
 80:     }
 81: 
 82: 
 83:     /**
 84:      * @param  int
 85:      * @return self
 86:      */
 87:     public function setTimestamp($timestamp)
 88:     {
 89:         $zone = PHP_VERSION_ID === 50206 ? new \DateTimeZone($this->getTimezone()->getName()) : $this->getTimezone();
 90:         $this->__construct('@' . $timestamp);
 91:         $this->setTimeZone($zone);
 92:         return $this;
 93:     }
 94: 
 95: 
 96:     /**
 97:      * @return int|string
 98:      */
 99:     public function getTimestamp()
100:     {
101:         $ts = $this->format('U');
102:         return is_float($tmp = $ts * 1) ? $ts : $tmp;
103:     }
104: 
105: 
106:     }
107: