README

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PHP library / extension that resolves the current season from an ISO 3166-1 alpha-2 country code. Use it as a plain Composer package, or integrate with Laravel 7–11, ThinkPHP 6 / 8, Hyperf 2 / 3, and webman. Besides English season keys (spring, etc.) and Chinese names, it provides flag emoji, localized season names by BCP 47 locale, hemisphere detection, and optional date-based calculation.

• Northern hemisphere: spring Mar–May, summer Jun–Aug, autumn Sep–Nov, winter Dec / Jan / Feb
• Southern hemisphere: autumn Mar–May, winter Jun–Aug, spring Sep–Nov, summer Dec / Jan / Feb

Installation

composer require erikwang2013/season

webman plugin

After installing the dependency, from your webman project root (with webman/console installed):

php webman install erikwang2013/season

Or manually copy vendor/erikwang2013/season/src/config/plugin/erikwang2013/season to config/plugin/erikwang2013/season in your project.

Laravel 7–11

After composer require, unless you disable this package’s package discovery in composer.json, Erikwang2013\Season\Laravel\CountrySeasonServiceProvider is auto-registered and SeasonService is bound to the container (default country code comes from merged config).

Optional: publish default config:

php artisan vendor:publish --tag=country-season-config

This creates config/country_season.php; default_country_code maps to COUNTRY_SEASON_DEFAULT (default CN). Inject Erikwang2013\Season\SeasonService in controllers or services.

ThinkPHP 6 / 8

Composer’s think extension discovery registers Erikwang2013\Season\ThinkPHP\Service, binds SeasonService, and merges the package config/country_season.php into country_season. Resolve Erikwang2013\Season\SeasonService from the container or use dependency injection.

Hyperf 2 / 3

Hyperf ConfigProvider merges config: SeasonService is bound; default country code is read from country_season.default_country_code.

Optional: publish config:

php bin/hyperf.php vendor:publish erikwang2013/season

After config/autoload/country_season.php exists, adjust as needed; otherwise built-in default CN applies (override via COUNTRY_SEASON_DEFAULT or custom config).

Usage

1. Static API (any PHP project)

use Erikwang2013\Season\CountrySeason;

// English keys: spring | summer | autumn | winter
$season = CountrySeason::getSeason('CN');        // e.g. winter
$season = CountrySeason::getSeason('AU');        // Southern hemisphere, e.g. summer

// Chinese: 春 | 夏 | 秋 | 冬
$zh = CountrySeason::getSeasonNameZh('CN');

// Fixed date
$date = new \DateTimeImmutable('2026-06-15');
$season = CountrySeason::getSeason('US', $date);  // summer

// Hemisphere
$hemisphere = CountrySeason::getHemisphere('BR'); // south
$valid = CountrySeason::isValidCode('XX');        // true/false

Flag emoji (Unicode regional indicators)

$flag = CountrySeason::getCountryFlagEmoji('CN');  // 🇨🇳
$flag = CountrySeason::getCountryFlagEmoji('us');  // case-insensitive → 🇺🇸

Invalid or non–two-letter codes throw InvalidArgumentException (same as getSeason, etc.).

Localized season names (BCP 47)

getSeasonNameLocalized uses the country code for the season (including hemisphere) and the locale for the label:

// Second argument is locale: zh_CN, en_US, ja, de, fr_FR, etc. (- and _ both OK)
$name = CountrySeason::getSeasonNameLocalized('DE', 'de_DE');   // e.g. Frühling
$name = CountrySeason::getSeasonNameLocalized('US', 'en_US');   // fall (US English)
$name = CountrySeason::getSeasonNameLocalized('GB', 'en_GB');   // autumn (UK English)

// With a specific date
$date = new \DateTimeImmutable('2026-03-01');
CountrySeason::getSeasonNameLocalized('AU', 'en', $date);

List built-in locale tags (lowercase + underscore):

$locales = CountrySeason::getSupportedLocales();

Locale resolution: full tag first (e.g. zh_CN), then language only (e.g. zh), else fallback to en.

Built-ins cover common languages (EN/ZH/JA/KO, DE/FR/ES/IT/PT, RU/NL/PL/SV/UK, AR/HI/TH/VI/ID/TR, CS/DA/FI/NO, RO/EL/HE/HU, etc.); see getSupportedLocales() for the full set. For unlisted variants, try the language code (e.g. es) or map/extend externally.

2. Global helpers (when autoloaded)

country_season('JP');       // e.g. spring
country_season_zh('AU');    // Chinese name, e.g. 秋

country_season_flag('FR');  // 🇫🇷
country_season_locale('IT', 'it_IT');  // e.g. Primavera
country_season_locale('KR', 'ko', $date);  // optional date

3. Laravel / ThinkPHP / Hyperf — SeasonService

After integration, container SeasonService uses framework config (country_season.default_country_code, same as package config/country_season.php). getSeasonForDefault() uses that default country.

4. webman — SeasonService (after plugin install)

Register once (e.g. in config/bootstrap.php), then resolve from the container:

use Erikwang2013\Season\SeasonService;
use support\Container;

Container::singleton(SeasonService::class, function () {
    $code = config('plugin.erikwang2013.season.app.default_country_code', 'CN');

    return new SeasonService(\is_string($code) ? $code : 'CN');
});

use support\Container;
use Erikwang2013\Season\SeasonService;

/** @var SeasonService $seasonService */
$seasonService = Container::get(SeasonService::class);

$seasonService->getSeason('CN');
$seasonService->getSeasonNameZh('AU');
$seasonService->getCountryFlagEmoji('JP');
$seasonService->getSeasonNameLocalized('FR', 'fr_FR');
$seasonService->getSeasonForDefault();
$seasonService->getHemisphere('NZ');
$seasonService->isValidCode('AU');          // true
$seasonService->getSupportedLocales();       // ['ar', 'cs', 'da', ...]

5. Configuration (webman)

File: config/plugin/erikwang2013/season/app.php

return [
    'enable' => true,
    'default_country_code' => 'CN',  // or env('COUNTRY_SEASON_DEFAULT', 'CN')
];

Country codes

• ISO 3166-1 alpha-2 two-letter codes (e.g. CN, US, JP, AU).
• Southern countries (AU, AR, NZ, BR, etc.) are mapped; others are treated as northern hemisphere.

API summary

Exceptions and validation

• Country code must be two letters A–Z (case-insensitive); otherwise InvalidArgumentException from getSeason, getCountryFlagEmoji, etc.
• isValidCode() only checks format; it does not validate real ISO country codes.

Extending CountrySeason

resolveSeasonNamesForLocale() and seasonToNameZh() are protected static — subclass CountrySeason to add or customize locale data without forking.

setDefaultCountryCode() validates eagerly

SeasonService::setDefaultCountryCode() now throws InvalidArgumentException immediately on an invalid code, instead of deferring the error to the next getSeasonForDefault() call.

Testing

composer test

44 tests covering season mapping, hemisphere detection, flag emoji, locale fallback, SeasonService defaults, and error handling.

Requirements

• PHP >= 8.1
• mbstring extension (flag emoji uses mb_chr)
• Optional: workerman/webman-framework, illuminate/support, topthink/framework, hyperf/framework

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License

MIT