gmmktime - PHP code example

PHP Function gmmktime

PHP is a programming language that has many functions built into it to make coding easier. Functions are short code snippets that do a specific task.

PHP function gmmktime is used to generate the number of seconds measured since the GMT epoch for a date and time. The gmmktime() function takes 6 parameters representing the year, month, day, hour, minute and second of the date and time that you want to create a Unix timestamp for.

The year parameter can be an integer value between 1 and 32767. The month and day values must be in the range of 1 to 31. The gmmktime() function also allows you to use a negative day value (ie -1) for the last day of the given month.

The is_dst parameter specifies whether or not the passed date and time should be adjusted for daylight saving time. It is not required as the other parameters always represent a GMT date and time, so it does not influence the final result of the gmmktime() function.

The gmmktime() function returns the Unix timestamp on success or false on error. Unlike the date() function which returns a date relative to PHP’s local timezone, gmmktime() return the GMT epoch timestamp on success. PHP also has other function that can convert a date into a time stamp, such as the strtotime() function. This function takes inputs of the hour, day, month and year and returns an ISO 8601 timestamp. It accepts values between Friday, 13 December 1901 and Tuesday, 19 January 2038. However it will not work with dates before the Unix epoch. This is because negative dates are not supported by Windows, and some other systems, so they will not be parsed correctly.

gmmktime example

protected function mktime($hour, $minute, $second, $month, $day, $year, $gmt = false)
    {
        // complete date but in 32bit timestamp - use PHP internal         if ((1901 < $year) and ($year < 2038)) {

            $oldzone = @date_default_timezone_get();
            // Timezone also includes DST settings, therefor substracting the GMT offset is not enough             // We have to set the correct timezone to get the right value             if (($this->_timezone != $oldzone) and ($gmt === false)) {
                date_default_timezone_set($this->_timezone);
            }
            $result = ($gmt) ? @gmmktime($hour, $minute, $second, $month, $day, $year)
                             :   @mktime($hour, $minute, $second, $month, $day, $year);
            date_default_timezone_set($oldzone);

            return $result;
        }

        if ($gmt !== true) {
            $second += $this->_offset;
        }

        if (isset(self::$_cache)) {

$timezone = 0 - $timezone;
                }
            }
            else
            {
                $timezone = 0;
            }

            // Convert the number of seconds to an integer, taking decimals into account             $second = round((int)$match[6] + (int)$match[7] / (10 ** strlen($match[7])));

            return gmmktime($match[4], $match[5], $second, $match[2], $match[3], $match[1]) - $timezone;
        }

        return false;
    }

    /** * Remove RFC822 comments * * @access protected * @param string $data Data to strip comments from * @return string Comment stripped string */

  /** * Additional data to test the NULL issue. */
  protected function dataSet() {
    $data_set = parent::dataSet();
    $data_set[] = [
      'name' => 'Ginger',
      'age' => 25,
      'job' => NULL,
      'created' => gmmktime(0, 0, 0, 1, 2, 2000),
      'status' => 1,
    ];
    return $data_set;
  }

  /** * Allow {views_test_data}.job to be NULL. * * @internal */
  protected function schemaDefinition() {

'sort' => ['id' => 'date'],
    ];
    return $data;
  }

  /** * {@inheritdoc} */
  public function dataSet() {
    $datas = parent::dataSet();
    foreach ($datas as $i => $data) {
      $datas[$i]['destroyed'] = gmmktime(0, 0, 0, 1, 1, 2050);
    }
    return $datas;
  }

  /** * Sets up functional test of the views date field. */
  public function testFieldDate() {
    $view = Views::getView('test_view');
    $view->setDisplay();

$expected = [];
    $this->assertIdenticalResultset($view, $expected, $this->columnMap);
  }

  /** * Tests the Week handler. * * @see \Drupal\node\Plugin\views\argument\CreatedWeek */
  public function testWeekHandler() {
    $this->container->get('database')->update('views_test_data')
      ->fields(['created' => gmmktime(0, 0, 0, 9, 26, 2008)])
      ->condition('id', 1)
      ->execute();

    $this->container->get('database')->update('views_test_data')
      ->fields(['created' => gmmktime(0, 0, 0, 2, 29, 2004)])
      ->condition('id', 2)
      ->execute();

    $this->container->get('database')->update('views_test_data')
      ->fields(['created' => gmmktime(0, 0, 0, 1, 1, 2000)])
      ->condition('id', 3)

$formatter->setTimeZone($timezone);

        return $formattedTimestamps;
    }

    private function listYears(array $years): array
    {
        $result = [];

        foreach ($years as $year) {
            $result[\PHP_INT_SIZE === 4 ? \DateTimeImmutable::createFromFormat('Y e', $year.' UTC')->format('U') : gmmktime(0, 0, 0, 6, 15, $year)] = $year;
        }

        return $result;
    }

    private function listMonths(array $months): array
    {
        $result = [];

        foreach ($months as $month) {
            $result[gmmktime(0, 0, 0, $month, 15)] = $month;
        }

if ( !function_exists('parse_w3cdtf') ) :
function parse_w3cdtf ( $date_str ) {

    # regex to match W3C date/time formats     $pat = "/(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2})(:(\d{2}))?(?:([-+])(\d{2}):?(\d{2})|(Z))?/";

    if ( preg_match( $pat, $date_str, $match ) ) {
        list( $year, $month, $day, $hours, $minutes, $seconds) =
            array( $match[1], $match[2], $match[3], $match[4], $match[5], $match[7]);

        # calc epoch for current date assuming GMT         $epoch = gmmktime( $hours, $minutes, $seconds, $month, $day, $year);

        $offset = 0;
        if ( $match[11] == 'Z' ) {
            # zulu time, aka GMT         }
        else {
            list( $tz_mod, $tz_hour, $tz_min ) =
                array( $match[8], $match[9], $match[10]);

            # zero out the variables             if ( ! $tz_hour ) { $tz_hour = 0; }

$thisfile_riff_WAVE_bext_0['origin_date']    =                              substr($thisfile_riff_WAVE_bext_0['data'], 320,  10);
                    $thisfile_riff_WAVE_bext_0['origin_time']    =                              substr($thisfile_riff_WAVE_bext_0['data'], 330,   8);
                    $thisfile_riff_WAVE_bext_0['time_reference'] = getid3_lib::LittleEndian2Int(substr($thisfile_riff_WAVE_bext_0['data'], 338,   8));
                    $thisfile_riff_WAVE_bext_0['bwf_version']    = getid3_lib::LittleEndian2Int(substr($thisfile_riff_WAVE_bext_0['data'], 346,   1));
                    $thisfile_riff_WAVE_bext_0['reserved']       =                              substr($thisfile_riff_WAVE_bext_0['data'], 347, 254);
                    $thisfile_riff_WAVE_bext_0['coding_history'] =         explode("\r\n", trim(substr($thisfile_riff_WAVE_bext_0['data'], 601)));
                    if (preg_match('#^([0-9]{4}).([0-9]{2}).([0-9]{2})$#', $thisfile_riff_WAVE_bext_0['origin_date'], $matches_bext_date)) {
                        if (preg_match('#^([0-9]{2}).([0-9]{2}).([0-9]{2})$#', $thisfile_riff_WAVE_bext_0['origin_time'], $matches_bext_time)) {
                            $bext_timestamp = array();
                            list($dummy, $bext_timestamp['year'], $bext_timestamp['month'],  $bext_timestamp['day'])    = $matches_bext_date;
                            list($dummy, $bext_timestamp['hour'], $bext_timestamp['minute'], $bext_timestamp['second']) = $matches_bext_time;
                            $thisfile_riff_WAVE_bext_0['origin_date_unix'] = gmmktime($bext_timestamp['hour'], $bext_timestamp['minute'], $bext_timestamp['second'], $bext_timestamp['month'], $bext_timestamp['day'], $bext_timestamp['year']);
                        } else {
                            $this->warning('RIFF.WAVE.BEXT.origin_time is invalid');
                        }
                    } else {
                        $this->warning('RIFF.WAVE.BEXT.origin_date is invalid');
                    }
                    $thisfile_riff['comments']['author'][] = $thisfile_riff_WAVE_bext_0['author'];
                    $thisfile_riff['comments']['title'][]  = $thisfile_riff_WAVE_bext_0['title'];
                }

                if (isset($thisfile_riff_WAVE['MEXT'][0]['data'])) {

"'#cfcfcf'", '#cfcfcf'],
            ['::form_base.html.twig', '::form_base.html.twig'],

            // Pre-YAML-1.2 booleans             ["'y'", 'y'],
            ["'n'", 'n'],
            ["'yes'", 'yes'],
            ["'no'", 'no'],
            ["'on'", 'on'],
            ["'off'", 'off'],

            ['2007-10-30', gmmktime(0, 0, 0, 10, 30, 2007)],
            ['2007-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 2007)],
            ['2007-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 2007)],
            ['1960-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 1960)],
            ['1730-10-30T02:59:43Z', \PHP_INT_SIZE === 4 ? '-7547547617' : gmmktime(2, 59, 43, 10, 30, 1730)],

            ['"a \\"string\\" with \'quoted strings inside\'"', 'a "string" with \'quoted strings inside\''],
            ["'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''],

            // sequences             // urls are no key value mapping. see #3609. Valid yaml "key: value" mappings require a space after the colon             ['[foo, http://urls.are/no/mappings, false, null, 12]', ['foo', 'http://urls.are/no/mappings', false, null, 12]],
            [

  /** * Returns a very simple test dataset. */
  public static function dataSet() {
    return [
      [
        'name' => 'John',
        'age' => 25,
        'job' => 'Singer',
        'created' => gmmktime(0, 0, 0, 1, 1, 2000),
        'status' => 1,
      ],
      [
        'name' => 'George',
        'age' => 27,
        'job' => 'Singer',
        'created' => gmmktime(0, 0, 0, 1, 2, 2000),
        'status' => 0,
      ],
      [
        'name' => 'Ringo',

  public function testNumericFieldVisible() {
    // Adds a new data point in the views_test_data table to have a person with     // an age of zero.     $data_set = $this->dataSet();
    $query = Database::getConnection()->insert('views_test_data')
      ->fields(array_keys($data_set[0]));
    $query->values([
      'name' => 'James McCartney',
      'age' => 0,
      'job' => 'Baby',
      'created' => gmmktime(6, 30, 10, 1, 1, 2000),
      'status' => 1,
    ]);
    $query->execute();

    $this->drupalGet('test-table');

    $this->assertSession()->elementExists('xpath', '//tbody/tr/td[contains(., "Baby")]');
    $this->assertSession()->elementExists('xpath', '//tbody/tr/td[text()=0]');
  }

  /** * Tests that empty columns are hidden when empty_column is set. */