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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Hydrator\Strategy;
use DateTime;
use DateTimeZone;
class DateTimeFormatterStrategy implements StrategyInterface
{
/**
* @var string
*/
private $format;
/**
* @var DateTimeZone|null
*/
private $timezone;
/**
* Constructor
*
* @param string $format
* @param DateTimeZone|null $timezone
*/
public function __construct($format = DateTime::RFC3339, DateTimeZone $timezone = null)
{
$this->format = (string) $format;
$this->timezone = $timezone;
}
/**
* {@inheritDoc}
*
* Converts to date time string
*
* @param mixed|DateTime $value
*
* @return mixed|string
*/
public function extract($value)
{
if ($value instanceof DateTime) {
return $value->format($this->format);
}
return $value;
}
/**
* Converts date time string to DateTime instance for injecting to object
*
* {@inheritDoc}
*
* @param mixed|string $value
*
* @return mixed|DateTime
*/
public function hydrate($value)
{
if ($value === '' || $value === null) {
return;
}
if ($this->timezone) {
$hydrated = DateTime::createFromFormat($this->format, $value, $this->timezone);
} else {
$hydrated = DateTime::createFromFormat($this->format, $value);
}
return $hydrated ?: $value;
}
}