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:  * @package Nette
  7:  */
  8: 
  9: 
 10: 
 11: /**
 12:  * DateTime with serialization and timestamp support for PHP 5.2.
 13:  *
 14:  * @author     David Grudl
 15:  * @package Nette
 16:  */
 17: class DateTime53 extends DateTime
 18: {
 19:     /** minute in seconds */
 20:     const MINUTE = 60;
 21: 
 22:     /** hour in seconds */
 23:     const HOUR = 3600;
 24: 
 25:     /** day in seconds */
 26:     const DAY = 86400;
 27: 
 28:     /** week in seconds */
 29:     const WEEK = 604800;
 30: 
 31:     /** average month in seconds */
 32:     const MONTH = 2629800;
 33: 
 34:     /** average year in seconds */
 35:     const YEAR = 31557600;
 36: 
 37: 
 38:     /**
 39:      * DateTime object factory.
 40:      * @param  string|int|DateTime
 41:      * @return DateTime53
 42:      */
 43:     public static function from($time)
 44:     {
 45:         if ($time instanceof DateTime || $time instanceof DateTimeInterface) {
 46:             return new self($time->format('Y-m-d H:i:s'), $time->getTimezone());
 47: 
 48:         } elseif (is_numeric($time)) {
 49:             if ($time <= self::YEAR) {
 50:                 $time += time();
 51:             }
 52:             $tmp = new self('@' . $time);
 53:             $tmp->setTimeZone(new DateTimeZone(date_default_timezone_get()));
 54:             return $tmp;
 55: 
 56:         } else { // textual or NULL
 57:             return new self($time);
 58:         }
 59:     }
 60: 
 61: 
 62:     /**
 63:      * @return string
 64:      */
 65:     public function __toString()
 66:     {
 67:         return $this->format('Y-m-d H:i:s');
 68:     }
 69: 
 70: 
 71:     /**
 72:      * @param  string
 73:      * @return self
 74:      */
 75:     public function modifyClone($modify = '')
 76:     {
 77:         $dolly = clone $this;
 78:         return $modify ? $dolly->modify($modify) : $dolly;
 79:     }
 80: 
 81: 
 82:     /**
 83:      * @param  int
 84:      * @return self
 85:      */
 86:     public function setTimestamp($timestamp)
 87:     {
 88:         $zone = PHP_VERSION_ID === 50206 ? new DateTimeZone($this->getTimezone()->getName()) : $this->getTimezone();
 89:         $this->__construct('@' . $timestamp);
 90:         $this->setTimeZone($zone);
 91:         return $this;
 92:     }
 93: 
 94: 
 95:     /**
 96:      * @return int|string
 97:      */
 98:     public function getTimestamp()
 99:     {
100:         $ts = $this->format('U');
101:         return is_float($tmp = $ts * 1) ? $ts : $tmp;
102:     }
103: 
104: 
105:     public function modify($modify)
106:     {
107:         parent::modify($modify);
108:         return $this;
109:     }
110: 
111: 
112:     public static function __set_state($state)
113:     {
114:         return new self($state['date'], new DateTimeZone($state['timezone']));
115:     }
116: 
117: 
118:     public function __sleep()
119:     {
120:         $zone = $this->getTimezone()->getName();
121:         if ($zone[0] === '+') {
122:             $this->fix = array($this->format('Y-m-d H:i:sP'));
123:         } else {
124:             $this->fix = array($this->format('Y-m-d H:i:s'), $zone);
125:         }
126:         return array('fix');
127:     }
128: 
129: 
130:     public function __wakeup()
131:     {
132:         if (isset($this->fix[1])) {
133:             $this->__construct($this->fix[0], new DateTimeZone($this->fix[1]));
134:         } else {
135:             $this->__construct($this->fix[0]);
136:         }
137:         unset($this->fix);
138:     }
139: 
140: }
141: