root
46 lines
1.1 KiB
PHP
46 lines
1.1 KiB
PHP
<?php
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/**
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* SHOW_SITE_COUNTRY 允许列表解析与比对
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*/
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require_once __DIR__ . '/CountryCodeNormalizer.php';
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class CountryAllowlist
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{
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/**
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* @param string $config 逗号分隔国家码，如 US,GB,CA
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* @return string[]
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*/
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public static function parse($config)
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{
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$config = strtoupper(trim((string) $config));
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if ($config === '') {
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return [];
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}
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$parts = preg_split('/\s*,\s*/', $config);
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$out = [];
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foreach ($parts as $part) {
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$part = trim($part);
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if ($part !== '') {
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$out[] = $part;
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}
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}
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return array_values(array_unique($out));
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}
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/**
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* @param string|null $countryCode
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* @param string[] $allowlist
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*/
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public static function isAllowed($countryCode, array $allowlist)
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{
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if ($allowlist === []) {
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return true;
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}
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$normalized = CountryCodeNormalizer::toAlpha2($countryCode);
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if ($normalized === null || $normalized === '') {
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return false;
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}
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return in_array($normalized, $allowlist, true);
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}
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}
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