dateobject.php

Bug tracker, and reporter.

        }
        date_default_timezone_set($oldzone);

        $date = $this->getDateParts($timestamp, true);
        $length = strlen($format);
        $output = '';

        for ($i = 0; $i < $length; $i++) {

            switch($format[$i]) {

                // day formats
                case 'd':  // day of month, 2 digits, with leading zero, 01 - 31
                    $output .= (($date['mday'] < 10) ? '0' . $date['mday'] : $date['mday']);
                    break;

                case 'D':  // day of week, 3 letters, Mon - Sun
                    $output .= date('D', 86400 * (3 + self::dayOfWeek($date['year'], $date['mon'], $date['mday'])));
                    break;

                case 'j':  // day of month, without leading zero, 1 - 31
                    $output .= $date['mday'];
                    break;

                case 'l':  // day of week, full string name, Sunday - Saturday
                    $output .= date('l', 86400 * (3 + self::dayOfWeek($date['year'], $date['mon'], $date['mday'])));
                    break;

                case 'N':  // ISO 8601 numeric day of week, 1 - 7
                    $day = self::dayOfWeek($date['year'], $date['mon'], $date['mday']);
                    if ($day == 0) {
                        $day = 7;
                    }
                    $output .= $day;
                    break;

                case 'S':  // english suffix for day of month, st nd rd th
                    if (($date['mday'] % 10) == 1) {
                        $output .= 'st';
                    } else if ((($date['mday'] % 10) == 2) and ($date['mday'] != 12)) {
                        $output .= 'nd';
                    } else if (($date['mday'] % 10) == 3) {
                        $output .= 'rd';
                    } else {
                        $output .= 'th';
                    }
                    break;

                case 'w':  // numeric day of week, 0 - 6
                    $output .= self::dayOfWeek($date['year'], $date['mon'], $date['mday']);
                    break;

                case 'z':  // day of year, 0 - 365
                    $output .= $date['yday'];
                    break;


                // week formats
                case 'W':  // ISO 8601, week number of year
                    $output .= $this->weekNumber($date['year'], $date['mon'], $date['mday']);
                    break;


                // month formats
                case 'F':  // string month name, january - december
                    $output .= date('F', mktime(0, 0, 0, $date['mon'], 2, 1971));
                    break;

                case 'm':  // number of month, with leading zeros, 01 - 12
                    $output .= (($date['mon'] < 10) ? '0' . $date['mon'] : $date['mon']);
                    break;

                case 'M':  // 3 letter month name, Jan - Dec
                    $output .= date('M',mktime(0, 0, 0, $date['mon'], 2, 1971));
                    break;

                case 'n':  // number of month, without leading zeros, 1 - 12
                    $output .= $date['mon'];
                    break;

                case 't':  // number of day in month
                    $output .= self::$_monthTable[$date['mon'] - 1];
                    break;


                // year formats
                case 'L':  // is leap year ?
                    $output .= (self::isYearLeapYear($date['year'])) ? '1' : '0';
                    break;

                case 'o':  // ISO 8601 year number
                    $week = $this->weekNumber($date['year'], $date['mon'], $date['mday']);
                    if (($week > 50) and ($date['mon'] == 1)) {
                        $output .= ($date['year'] - 1);
                    } else {
                        $output .= $date['year'];
                    }
                    break;

                case 'Y':  // year number, 4 digits
                    $output .= $date['year'];
                    break;

                case 'y':  // year number, 2 digits
                    $output .= substr($date['year'], strlen($date['year']) - 2, 2);
                    break;


                // time formats
                case 'a':  // lower case am/pm
                    $output .= (($date['hours'] >= 12) ? 'pm' : 'am');
                    break;

                case 'A':  // upper case am/pm
                    $output .= (($date['hours'] >= 12) ? 'PM' : 'AM');
                    break;

                case 'B':  // swatch internet time
                    $dayseconds = ($date['hours'] * 3600) + ($date['minutes'] * 60) + $date['seconds'];
                    if ($gmt === true) {
                        $dayseconds += 3600;
                    }
                    $output .= (int) (($dayseconds % 86400) / 86.4);
                    break;

                case 'g':  // hours without leading zeros, 12h format
                    if ($date['hours'] > 12) {
                        $hour = $date['hours'] - 12;
                    } else {
                        if ($date['hours'] == 0) {
                            $hour = '12';
                        } else {
                            $hour = $date['hours'];
                        }
                    }
                    $output .= $hour;
                    break;

                case 'G':  // hours without leading zeros, 24h format
                    $output .= $date['hours'];
                    break;

                case 'h':  // hours with leading zeros, 12h format
                    if ($date['hours'] > 12) {
                        $hour = $date['hours'] - 12;
                    } else {
                        if ($date['hours'] == 0) {
                            $hour = '12';
                        } else {
                            $hour = $date['hours'];
                        }
                    }
                    $output .= (($hour < 10) ? '0'.$hour : $hour);
                    break;

                case 'H':  // hours with leading zeros, 24h format
                    $output .= (($date['hours'] < 10) ? '0' . $date['hours'] : $date['hours']);
                    break;

                case 'i':  // minutes with leading zeros
                    $output .= (($date['minutes'] < 10) ? '0' . $date['minutes'] : $date['minutes']);
                    break;

                case 's':  // seconds with leading zeros
                    $output .= (($date['seconds'] < 10) ? '0' . $date['seconds'] : $date['seconds']);
                    break;


                // timezone formats
                case 'e':  // timezone identifier
                    if ($gmt === true) {
                        $output .= gmdate('e', mktime($date['hours'], $date['minutes'], $date['seconds'],
                                                      $date['mon'], $date['mday'], 2000));
                    } else {
                        $output .=   date('e', mktime($date['hours'], $date['minutes'], $date['seconds'],
                                                      $date['mon'], $date['mday'], 2000));
                    }
                    break;

                case 'I':  // daylight saving time or not
                    if ($gmt === true) {
                        $output .= gmdate('I', mktime($date['hours'], $date['minutes'], $date['seconds'],
                                                      $date['mon'], $date['mday'], 2000));
                    } else {
                        $output .=   date('I', mktime($date['hours'], $date['minutes'], $date['seconds'],
                                                      $date['mon'], $date['mday'], 2000));
                    }
                    break;

                case 'O':  // difference to GMT in hours
                    $gmtstr = ($gmt === true) ? 0 : $this->_offset;
                    $output .= sprintf('%s%04d', ($gmtstr <= 0) ? '+' : '-', abs($gmtstr) / 36);
                    break;

                case 'P':  // difference to GMT with colon
                    $gmtstr = ($gmt === true) ? 0 : $this->_offset;
                    $gmtstr = sprintf('%s%04d', ($gmtstr <= 0) ? '+' : '-', abs($gmtstr) / 36);
                    $output = $output . substr($gmtstr, 0, 3) . ':' . substr($gmtstr, 3);
                    break;

                case 'T':  // timezone settings
                    if ($gmt === true) {
                        $output .= gmdate('T', mktime($date['hours'], $date['minutes'], $date['seconds'],
                                                      $date['mon'], $date['mday'], 2000));
                    } else {
                        $output .=   date('T', mktime($date['hours'], $date['minutes'], $date['seconds'],
                                                      $date['mon'], $date['mday'], 2000));
                    }
                    break;

                case 'Z':  // timezone offset in seconds
                    $output .= ($gmt === true) ? 0 : -$this->_offset;
                    break;


                // complete time formats
                case 'c':  // ISO 8601 date format
                    $difference = $this->_offset;
                    $difference = sprintf('%s%04d', ($difference <= 0) ? '+' : '-', abs($difference) / 36);
                    $output .= $date['year'] . '-'
                             . (($date['mon']     < 10) ? '0' . $date['mon']     : $date['mon'])     . '-'
                             . (($date['mday']    < 10) ? '0' . $date['mday']    : $date['mday'])    . 'T'
                             . (($date['hours']   < 10) ? '0' . $date['hours']   : $date['hours'])   . ':'
                             . (($date['minutes'] < 10) ? '0' . $date['minutes'] : $date['minutes']) . ':'
                             . (($date['seconds'] < 10) ? '0' . $date['seconds'] : $date['seconds'])
                             . $difference;
                    break;

                case 'r':  // RFC 2822 date format
                    $difference = $this->_offset;
                    $difference = sprintf('%s%04d', ($difference <= 0) ? '+' : '-', abs($difference) / 36);
                    $output .= gmdate('D', 86400 * (3 + self::dayOfWeek($date['year'], $date['mon'], $date['mday']))) . ', '
                             . (($date['mday']    < 10) ? '0' . $date['mday']    : $date['mday'])    . ' '
                             . date('M', mktime(0, 0, 0, $date['mon'], 2, 1971)) . ' '
                             . $date['year'] . ' '
                             . (($date['hours']   < 10) ? '0' . $date['hours']   : $date['hours'])   . ':'
                             . (($date['minutes'] < 10) ? '0' . $date['minutes'] : $date['minutes']) . ':'
                             . (($date['seconds'] < 10) ? '0' . $date['seconds'] : $date['seconds']) . ' '
                             . $difference;
                    break;

                case 'U':  // Unix timestamp
                    $output .= $timestamp;
                    break;


                // special formats
                case "\\":  // next letter to print with no format
                    $i++;
                    if ($i < $length) {
                        $output .= $format[$i];
                    }
                    break;

                default:  // letter is no format so add it direct
                    $output .= $format[$i];
                    break;
            }
        }

        return (string) $output;
    }


    /**
     * Returns the day of week for a Gregorian calendar date.
     * 0 = sunday, 6 = saturday
     *
     * @param  integer  $year
     * @param  integer  $month
     * @param  integer  $day
     * @return integer  dayOfWeek
     */
    protected static function dayOfWeek($year, $month, $day)
    {
        if ((1901 < $year) and ($year < 2038)) {
            return (int) date('w', mktime(0, 0, 0, $month, $day, $year));
        }

        // gregorian correction
        $correction = 0;
        if (($year < 1582) or (($year == 1582) and (($month < 10) or (($month == 10) && ($day < 15))))) {
            $correction = 3;
        }

        if ($month > 2) {
            $month -= 2;
        } else {
            $month += 10;
            $year--;
        }

        $day  = floor((13 * $month - 1) / 5) + $day + ($year % 100) + floor(($year % 100) / 4);
        $day += floor(($year / 100) / 4) - 2 * floor($year / 100) + 77 + $correction;

        return (int) ($day - 7 * floor($day / 7));
    }


    /**
     * Internal getDateParts function for handling 64bit timestamps, similar to:
     * http://www.php.net/getdate
     *
     * Returns an array of date parts for $timestamp, relative to 1970/01/01 00:00:00 GMT/UTC.
     *
     * $fast specifies ALL date parts should be returned (slower)
     * Default is false, and excludes $dayofweek, weekday, month and timestamp from parts returned.
     *
     * @param   mixed    $timestamp
     * @param   boolean  $fast   OPTIONAL defaults to fast (false), resulting in fewer date parts
     * @return  array
     */
    protected function getDateParts($timestamp = null, $fast = null)
    {

        // actual timestamp
        if ($timestamp === null) {
            return getdate();
        }

        // 32bit timestamp
        if (abs($timestamp) <= 0x7FFFFFFF) {
            return @getdate($timestamp);
        }

        if (isset(self::$_cache)) {
            $id = strtr('Zend_DateObject_getDateParts_' . $timestamp.'_'.(int)$fast, '-','_');
            if ($result = self::$_cache->load($id)) {
                return unserialize($result);
            }
        }

        $otimestamp = $timestamp;
        $numday = 0;
        $month = 0;
        // gregorian correction
        if ($timestamp < -12219321600) {
            $timestamp -= 864000;
        }

        // timestamp lower 0
        if ($timestamp < 0) {
            $sec = 0;
            $act = 1970;

            // iterate through 10 years table, increasing speed
            foreach(self::$_yearTable as $year => $seconds) {
                if ($timestamp >= $seconds) {
                    $i = $act;
                    break;
                }
                $sec = $seconds;
                $act = $year;
            }