Class that enables you to work with dates and time much easier.
/**
* Populates the cache control headers with options so that the browser caches the content.
*
* @param DateTimeObject $expirationDate Defines the date when the cache should expire.
*
* @return $this
*/
public function setAsCache(DateTimeObject $expirationDate)
{
$expirationDateFormatted = date('D, d M Y H:i:s', $expirationDate->getTimestamp());
$this->cacheControl->key('Expires', $expirationDateFormatted . ' GMT');
$maxAge = $expirationDate->getTimestamp() - time();
$this->cacheControl->key('Cache-Control', 'private, max-age=' . $maxAge);
$this->cacheControl->key('Last-Modified', date('D, d M Y H:i:s') . ' GMT');
return $this;
}
public function testSetAsCache()
{
$cc = new CacheControl();
$dt = new DateTimeObject();
$cc->setAsCache($dt->add('3 hours'));
$ccHeaders = $cc->getCacheControl();
$maxAge = $dt->getTimestamp() - time();
$this->assertSame('private, max-age=' . $maxAge, $ccHeaders['Cache-Control']);
$dtFormatted = date('D, d M Y H:i:s', $dt->getTimestamp());
$this->assertSame($dtFormatted . ' GMT', $ccHeaders['Expires']);
}
/**
* Returns the last modified time
*
* @param string $key
*
* @param bool $asDateTimeObject (Optional) Return as DateTimeObject if true
*
* @return UNIX Timestamp or DateTimeObject
*/
public function getTimeModified($key, $asDateTimeObject = false)
{
$time = $this->driver->getTimeModified($key);
if ($asDateTimeObject) {
$datetime = new DateTimeObject();
return $datetime->setTimestamp($time);
}
return $time;
}
public function testSmallerThan2()
{
$dt = new DateTimeObject('14.02.2013');
$this->assertFalse($dt->smallerThan('13.02.2013'));
}
/**
* Create a DateTimeObject from the given $time and $format.
*
* @param string|int $time Timestamp.
* @param null|string $format Format in which the current timestamp is defined.
*
* @return DateTimeObject
* @throws DateTimeObjectException
*/
public static function createFromFormat($time, $format = null)
{
if (self::isNull($format)) {
$format = self::$defaultFormat;
}
try {
$date = \DateTime::createFromFormat($format, $time);
if (!$date) {
throw new DateTimeObjectException(DateTimeObjectException::MSG_UNABLE_TO_CREATE_FROM_FORMAT);
}
} catch (\Exception $e) {
throw new DateTimeObjectException(DateTimeObjectException::MSG_UNABLE_TO_CREATE_FROM_FORMAT);
}
try {
$dt = new DateTimeObject();
$dt->setTimestamp($date->getTimestamp());
$dt->setFormat($format);
} catch (\Exception $e) {
throw new DateTimeObjectException(DateTimeObjectException::MSG_UNABLE_TO_CREATE_FROM_FORMAT);
}
return $dt;
}
