DateTime::__wakeup()
DateTimeImmutable::__wakeup
DateTimeInterface::__wakeup
(PHP 5 >= 5.3.0, PHP 7)
The __wakeup handler
说明
public DateTime::__wakeup(void)
public DateTimeImmutable::__wakeup(void)
public DateTimeInterface::__wakeup(void)
The__wakeup()handler.
参数
此函数没有参数。
返回值
Initializes a DateTime object.
If you use a version prior to 5.3 you can make __wakeup and __toString work using the following piece of code. <?php class ExtendedDateTime extends DateTime { private $_date_time; public function __toString() { return $this->format('c'); // format as ISO 8601 } public function __sleep() { $this->_date_time = $this->format('c'); return array('_date_time'); } public function __wakeup() { $this->__construct($this->_date_time); } } ?> Hope this helps someone.