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<?php
namespace Http\Message;
use Http\Message\Exception\UnexpectedValueException;
final class CookieUtil
{
/**
* Handles dates as defined by RFC 2616 section 3.3.1, and also some other
* non-standard, but common formats.
*
* @var array
*/
private static $dateFormats = [
'D, d M y H:i:s T',
'D, d M Y H:i:s T',
'D, d-M-y H:i:s T',
'D, d-M-Y H:i:s T',
'D, d-m-y H:i:s T',
'D, d-m-Y H:i:s T',
'D M j G:i:s Y',
'D M d H:i:s Y T',
];
/**
* @see https://github.com/symfony/symfony/blob/master/src/Symfony/Component/BrowserKit/Cookie.php
*
* @param string $dateValue
*
* @return \DateTime
*
* @throws UnexpectedValueException if we cannot parse the cookie date string.
*/
public static function parseDate($dateValue)
{
foreach (self::$dateFormats as $dateFormat) {
if (false !== $date = \DateTime::createFromFormat($dateFormat, $dateValue, new \DateTimeZone('GMT'))) {
return $date;
}
}
// attempt a fallback for unusual formatting
if (false !== $date = date_create($dateValue, new \DateTimeZone('GMT'))) {
return $date;
}
throw new UnexpectedValueException(sprintf(
'Unparseable cookie date string "%s"',
$dateValue
));
}
}
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