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<?php |
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namespace SubjectivePHP\Util; |
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/** |
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* Static utility class for working with DateTimeZone objects. |
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*/ |
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abstract class DateTimeZone |
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{ |
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/** |
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* Array of edge case timezones |
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* |
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* @var array |
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*/ |
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private static $outliers = [ |
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'WIB' => 'Asia/Jakarta', //Western Indonesian Time |
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'FET' => 'Europe/Helsinki', //Further-eastern European Time |
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'AEST' => 'Australia/Tasmania', //Australia Eastern Standard Time |
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'AWST' => 'Australia/West', //Australia Western Standard Time |
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'WITA' => 'Asia/Makassar', |
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'AEDT' => 'Australia/Sydney', //Australia Eastern Daylight Time |
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'ACDT' => 'Australia/Adelaide', //Australia Central Daylight Time |
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]; |
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/** |
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* Returns a \DateTimeZone instance for the give nameOrAbbreviation. |
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* |
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* @param string $nameOrAbbreviation The timezone nameOrAbbreviation. |
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* @param \DateTimeZone $default The default timezone to return if none can be created. |
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* |
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* @return \DateTimeZone |
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*/ |
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final public static function fromString($nameOrAbbreviation, \DateTimeZone $default = null) |
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{ |
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try { |
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return new \DateTimeZone($nameOrAbbreviation); |
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} catch (\Exception $e) { |
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if (array_key_exists($nameOrAbbreviation, self::$outliers)) { |
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return new \DateTimeZone(self::$outliers[$nameOrAbbreviation]); |
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} |
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return $default; |
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} |
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} |
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/** |
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* Returns a \DateTimeZone object based on gmt offset. |
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* |
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* @param integer $gmtOffset Offset from GMT in seconds. |
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* @param boolean $isDaylightSavings Daylight saving time indicator. |
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* |
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* @return \DateTimeZone |
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* |
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* @throws \InvalidArgumentException Thrown if $gmtOffset is not an integer. |
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* @throws \InvalidArgumentException Thrown if $isDaylightSavings is not a boolean. |
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*/ |
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final public static function fromOffset($gmtOffset, $isDaylightSavings) |
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{ |
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if (!is_int($gmtOffset)) { |
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throw new \InvalidArgumentException('$gmtOffset must be an integer'); |
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} |
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if (!is_bool($isDaylightSavings)) { |
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throw new \InvalidArgumentException('$isDaylightSavings must be a boolean'); |
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} |
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return self::fromString(timezone_name_from_abbr('', $gmtOffset, (int)$isDaylightSavings)); |
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} |
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/** |
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* Returns the long name of the given \DateTimeZone. |
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* |
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* @param \DateTimeZone $timezone The timezone object from which the long name should be obtained. |
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* |
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* @return string |
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*/ |
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final public static function getLongName(\DateTimeZone $timezone) |
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{ |
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$nameFromTimeZone = $timezone->getName(); |
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if (strlen($nameFromTimeZone) > 6) { |
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return $nameFromTimeZone; |
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} |
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$nameFromAbbr = timezone_name_from_abbr($nameFromTimeZone); |
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return $nameFromAbbr === false ? $nameFromTimeZone : $nameFromAbbr; |
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} |
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} |
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