class Timestamp

A Timestamp represents a point in time independent of any time zone or local calendar, encoded as a count of seconds and fractions of seconds at nanosecond resolution. The count is relative to an epoch at UTC midnight on January 1, 1970, in the proleptic Gregorian calendar which extends the Gregorian calendar backwards to year one. All minutes are 60 seconds long. Leap seconds are "smeared" so that no leap second table is needed for interpretation, using a [24-hour linear smear](https://developers.google.com/time/smear). The range is from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z. By restricting to that range, we ensure that we can convert to and from [RFC 3339](https://www.ietf.org/rfc/rfc3339.txt) date strings. # Examples Example 1: Compute Timestamp from POSIX `time()`. Timestamp timestamp; timestamp.set_seconds(time(NULL)); timestamp.set_nanos(0); Example 2: Compute Timestamp from POSIX `gettimeofday()`. struct timeval tv; gettimeofday(&tv, NULL); Timestamp timestamp; timestamp.set_seconds(tv.tv_sec); timestamp.set_nanos(tv.tv_usec * 1000); Example 3: Compute Timestamp from Win32 `GetSystemTimeAsFileTime()`. FILETIME ft; GetSystemTimeAsFileTime(&ft); UINT64 ticks = (((UINT64)ft.dwHighDateTime) << 32) | ft.dwLowDateTime; // A Windows tick is 100 nanoseconds. Windows epoch 1601-01-01T00:00:00Z // is 11644473600 seconds before Unix epoch 1970-01-01T00:00:00Z. Timestamp timestamp; timestamp.set_seconds((INT64) ((ticks / 10000000) - 11644473600LL)); timestamp.set_nanos((INT32) ((ticks % 10000000) * 100)); Example 4: Compute Timestamp from Java `System.currentTimeMillis()`. long millis = System.currentTimeMillis(); Timestamp timestamp = Timestamp.newBuilder().setSeconds(millis / 1000) .setNanos((int) ((millis % 1000) * 1000000)).build(); Example 5: Compute Timestamp from Java `Instant.now()`. Instant now = Instant.now(); Timestamp timestamp = Timestamp.newBuilder().setSeconds(now.getEpochSecond()) .setNanos(now.getNano()).build(); Example 6: Compute Timestamp from current time in Python. timestamp = Timestamp() timestamp.GetCurrentTime() # JSON Mapping In JSON format, the Timestamp type is encoded as a string in the [RFC 3339](https://www.ietf.org/rfc/rfc3339.txt) format. That is, the format is "{year}-{month}-{day}T{hour}:{min}:{sec}[.{frac_sec}]Z" where {year} is always expressed using four digits while {month}, {day}, {hour}, {min}, and {sec} are zero-padded to two digits each. The fractional seconds, which can go up to 9 digits (i.e. up to 1 nanosecond resolution), are optional. The "Z" suffix indicates the timezone ("UTC"); the timezone is required. A proto3 JSON serializer should always use UTC (as indicated by "Z") when printing the Timestamp type and a proto3 JSON parser should be able to accept both UTC and other timezones (as indicated by an offset). For example, "2017-01-15T01:30:15.01Z" encodes 15.01 seconds past 01:30 UTC on January 15, 2017. In JavaScript, one can convert a Date object to this format using the standard [toISOString()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Globa…) method. In Python, a standard `datetime.datetime` object can be converted to this format using [`strftime`](https://docs.python.org/2/library/time.html#time.strftime) with the time format spec '%Y-%m-%dT%H:%M:%S.%fZ'. Likewise, in Java, one can use the Joda Time's [`ISODateTimeFormat.dateTime()`]( http://www.joda.org/joda-time/apidocs/org/joda/time/format/ISODateTimeF… ) to obtain a formatter capable of generating timestamps in this format.

Generated from protobuf message <code>google.protobuf.Timestamp</code>

Hierarchy

• class \Google\Protobuf\Internal\Message
  • class \Google\Protobuf\Internal\TimestampBase extends \Google\Protobuf\Internal\Message
    • class \Google\Protobuf\Timestamp extends \Google\Protobuf\Internal\TimestampBase

Expanded class hierarchy of Timestamp

File

vendor/google/protobuf/src/Google/Protobuf/Timestamp.php, line 81

Namespace

class Timestamp extends \Google\Protobuf\Internal\TimestampBase {
    
    /**
     * Represents seconds of UTC time since Unix epoch
     * 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
     * 9999-12-31T23:59:59Z inclusive.
     *
     * Generated from protobuf field <code>int64 seconds = 1;</code>
     */
    protected $seconds = 0;
    
    /**
     * Non-negative fractions of a second at nanosecond resolution. Negative
     * second values with fractions must still have non-negative nanos values
     * that count forward in time. Must be from 0 to 999,999,999
     * inclusive.
     *
     * Generated from protobuf field <code>int32 nanos = 2;</code>
     */
    protected $nanos = 0;
    
    /**
     * Constructor.
     *
     * @param array $data {
     *     Optional. Data for populating the Message object.
     *
     *     @type int|string $seconds
     *           Represents seconds of UTC time since Unix epoch
     *           1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
     *           9999-12-31T23:59:59Z inclusive.
     *     @type int $nanos
     *           Non-negative fractions of a second at nanosecond resolution. Negative
     *           second values with fractions must still have non-negative nanos values
     *           that count forward in time. Must be from 0 to 999,999,999
     *           inclusive.
     * }
     */
    public function __construct($data = NULL) {
        \GPBMetadata\Google\Protobuf\Timestamp::initOnce();
        parent::__construct($data);
    }
    
    /**
     * Represents seconds of UTC time since Unix epoch
     * 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
     * 9999-12-31T23:59:59Z inclusive.
     *
     * Generated from protobuf field <code>int64 seconds = 1;</code>
     * @return int|string
     */
    public function getSeconds() {
        return $this->seconds;
    }
    
    /**
     * Represents seconds of UTC time since Unix epoch
     * 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
     * 9999-12-31T23:59:59Z inclusive.
     *
     * Generated from protobuf field <code>int64 seconds = 1;</code>
     * @param int|string $var
     * @return $this
     */
    public function setSeconds($var) {
        GPBUtil::checkInt64($var);
        $this->seconds = $var;
        return $this;
    }
    
    /**
     * Non-negative fractions of a second at nanosecond resolution. Negative
     * second values with fractions must still have non-negative nanos values
     * that count forward in time. Must be from 0 to 999,999,999
     * inclusive.
     *
     * Generated from protobuf field <code>int32 nanos = 2;</code>
     * @return int
     */
    public function getNanos() {
        return $this->nanos;
    }
    
    /**
     * Non-negative fractions of a second at nanosecond resolution. Negative
     * second values with fractions must still have non-negative nanos values
     * that count forward in time. Must be from 0 to 999,999,999
     * inclusive.
     *
     * Generated from protobuf field <code>int32 nanos = 2;</code>
     * @param int $var
     * @return $this
     */
    public function setNanos($var) {
        GPBUtil::checkInt32($var);
        $this->nanos = $var;
        return $this;
    }

}

Members