/**
* @param integer|string|DateTime $value the value to be formatted. The following
* types of value are supported:
*
* - an integer representing a UNIX timestamp
* - a string that can be [parsed to create a DateTime object](http://php.net/manual/en/datetime.formats.php).
* The timestamp is assumed to be in [[defaultTimeZone]] unless a time zone is explicitly given.
* - a PHP [DateTime](http://php.net/manual/en/class.datetime.php) object
*
* @param string $format the format used to convert the value into a date string.
* @param string $type 'date', 'time', or 'datetime'.
* @throws InvalidConfigException if the date format is invalid.
* @return string the formatted result.
*/
private function formatDateTimeValue($value, $format, $type)
{
$timeZone = $this->timeZone;
// avoid time zone conversion for date-only values
if ($type === 'date') {
list($timestamp, $hasTimeInfo) = $this->normalizeDatetimeValue($value, true);
if (!$hasTimeInfo) {
$timeZone = $this->defaultTimeZone;
}
} else {
$timestamp = $this->normalizeDatetimeValue($value);
}
if ($timestamp === null) {
return $this->nullDisplay;
}
// intl does not work with dates >=2038 or <=1901 on 32bit machines, fall back to PHP
$year = $timestamp->format('Y');
if ($this->_intlLoaded && !(PHP_INT_SIZE == 4 && ($year <= 1901 || $year >= 2038))) {
if (strncmp($format, 'php:', 4) === 0) {
$format = FormatConverter::convertDatePhpToIcu(substr($format, 4));
}
if (isset($this->_dateFormats[$format])) {
if ($type === 'date') {
$formatter = new IntlDateFormatter($this->locale, $this->_dateFormats[$format], IntlDateFormatter::NONE, $timeZone);
} elseif ($type === 'time') {
$formatter = new IntlDateFormatter($this->locale, IntlDateFormatter::NONE, $this->_dateFormats[$format], $timeZone);
} else {
$formatter = new IntlDateFormatter($this->locale, $this->_dateFormats[$format], $this->_dateFormats[$format], $timeZone);
}
} else {
$formatter = new IntlDateFormatter($this->locale, IntlDateFormatter::NONE, IntlDateFormatter::NONE, $timeZone, null, $format);
}
if ($formatter === null) {
throw new InvalidConfigException(intl_get_error_message());
}
// make IntlDateFormatter work with DateTimeImmutable
if ($timestamp instanceof \DateTimeImmutable) {
$timestamp = new DateTime($timestamp->format(DateTime::ISO8601), $timestamp->getTimezone());
}
return $formatter->format($timestamp);
} else {
if (strncmp($format, 'php:', 4) === 0) {
$format = substr($format, 4);
} else {
$format = FormatConverter::convertDateIcuToPhp($format, $type, $this->locale);
}
if ($timeZone != null) {
if ($timestamp instanceof \DateTimeImmutable) {
$timestamp = $timestamp->setTimezone(new DateTimeZone($timeZone));
} else {
$timestamp->setTimezone(new DateTimeZone($timeZone));
}
}
return $timestamp->format($format);
}
}
/**
* Formats a timestamp using the specified format
* @param integer $timestamp
* @param string $format
* @return string
*/
private function formatTimestamp($timestamp, $format)
{
if (strncmp($format, 'php:', 4) === 0) {
$format = substr($format, 4);
} else {
$format = FormatConverter::convertDateIcuToPhp($format, 'date');
}
$date = new DateTime();
$date->setTimestamp($timestamp);
$date->setTimezone(new \DateTimeZone($this->timestampAttributeTimeZone));
return $date->format($format);
}