DateTime
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DateTime::__wakeup

(PHP 5 >= 5.2.0)

DateTime::__wakeup — The __wakeup handler

说明

public DateTime DateTime::__wakeup ( void )

The __wakeup() handler.

参数

此函数没有参数。

返回值

Initializes a DateTime object.

DateTime
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PHP手册 - N: The __wakeup handler

用户评论:

prikkeldraad at gmail dot com (19-Jun-2009 04:14)

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.

TheDO (07-Apr-2009 04:32)

Be aware, even though this __wake() method exists as of PHP 5.2, DateTime objects don't retain their values when unserialized under PHP 5.2. PHP 5.3 fixes this.