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<?php
namespace Drupal\Component\Datetime;
/**
* Defines an interface for obtaining system time.
*/
interface TimeInterface {
/**
* Returns the timestamp for the current request.
*
* This method should be used to obtain the current system time at the start
* of the request. It will be the same value for the life of the request
* (even for long execution times).
*
* This method can replace instances of
* @code
* $request_time = $_SERVER['REQUEST_TIME'];
* $request_time = REQUEST_TIME;
* $request_time = $requestStack->getCurrentRequest()->server->get('REQUEST_TIME');
* $request_time = $request->server->get('REQUEST_TIME');
* @endcode
* and most instances of
* @code
* $time = time();
* @endcode
* with
* @code
* $request_time = \Drupal::time()->getRequestTime();
* @endcode
* or the equivalent using the injected service.
*
* Using the time service, rather than other methods, is especially important
* when creating tests, which require predictable timestamps.
*
* @return int
* A Unix timestamp.
*
* @see \Drupal\Component\Datetime\TimeInterface::getRequestMicroTime()
* @see \Drupal\Component\Datetime\TimeInterface::getCurrentTime()
* @see \Drupal\Component\Datetime\TimeInterface::getCurrentMicroTime()
*/
public function getRequestTime();
/**
* Returns the timestamp for the current request with microsecond precision.
*
* This method should be used to obtain the current system time, with
* microsecond precision, at the start of the request. It will be the same
* value for the life of the request (even for long execution times).
*
* This method can replace instances of
* @code
* $request_time_float = $_SERVER['REQUEST_TIME_FLOAT'];
* $request_time_float = $requestStack->getCurrentRequest()->server->get('REQUEST_TIME_FLOAT');
* $request_time_float = $request->server->get('REQUEST_TIME_FLOAT');
* @endcode
* and many instances of
* @code
* $microtime = microtime();
* $microtime = microtime(TRUE);
* @endcode
* with
* @code
* $request_time = \Drupal::time()->getRequestMicroTime();
* @endcode
* or the equivalent using the injected service.
*
* Using the time service, rather than other methods, is especially important
* when creating tests, which require predictable timestamps.
*
* @return float
* A Unix timestamp with a fractional portion.
*
* @see \Drupal\Component\Datetime\TimeInterface::getRequestTime()
* @see \Drupal\Component\Datetime\TimeInterface::getCurrentTime()
* @see \Drupal\Component\Datetime\TimeInterface::getCurrentMicroTime()
*/
public function getRequestMicroTime();
/**
* Returns the current system time as an integer.
*
* This method should be used to obtain the current system time, at the time
* the method was called.
*
* This method can replace many instances of
* @code
* $time = time();
* @endcode
* with
* @code
* $request_time = \Drupal::time()->getCurrentTime();
* @endcode
* or the equivalent using the injected service.
*
* This method should only be used when the current system time is actually
* needed, such as with timers or time interval calculations. If only the
* time at the start of the request is needed,
* use TimeInterface::getRequestTime().
*
* Using the time service, rather than other methods, is especially important
* when creating tests, which require predictable timestamps.
*
* @return int
* A Unix timestamp.
*
* @see \Drupal\Component\Datetime\TimeInterface::getRequestTime()
* @see \Drupal\Component\Datetime\TimeInterface::getRequestMicroTime()
* @see \Drupal\Component\Datetime\TimeInterface::getCurrentMicroTime()
*/
public function getCurrentTime();
/**
* Returns the current system time with microsecond precision.
*
* This method should be used to obtain the current system time, with
* microsecond precision, at the time the method was called.
*
* This method can replace many instances of
* @code
* $microtime = microtime();
* $microtime = microtime(TRUE);
* @endcode
* with
* @code
* $request_time = \Drupal::time()->getCurrentMicroTime();
* @endcode
* or the equivalent using the injected service.
*
* This method should only be used when the current system time is actually
* needed, such as with timers or time interval calculations. If only the
* time at the start of the request and microsecond precision is needed,
* use TimeInterface::getRequestMicroTime().
*
* Using the time service, rather than other methods, is especially important
* when creating tests, which require predictable timestamps.
*
* @return float
* A Unix timestamp with a fractional portion.
*
* @see \Drupal\Component\Datetime\TimeInterface::getRequestTime()
* @see \Drupal\Component\Datetime\TimeInterface::getRequestMicroTime()
* @see \Drupal\Component\Datetime\TimeInterface::getCurrentTime()
*/
public function getCurrentMicroTime();
}