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<?php |
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declare(strict_types=1); |
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namespace Patoui\Router; |
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class Headers |
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{ |
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/** |
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* Get headers from $_SERVER global. |
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* @return array<array> |
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*/ |
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public static function getHeadersArrayFromGlobals(): array |
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{ |
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$headers = array_filter($_SERVER, [__CLASS__, 'isServerKeyAHeader'], ARRAY_FILTER_USE_KEY); |
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$headers = array_map([__CLASS__, 'wrapValuesInArray'], $headers); |
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$headerKeys = array_map('strval', array_keys($headers)); |
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$headerKeys = array_map([__CLASS__, 'stripKeyOfLeadingHttpPrefix'], $headerKeys); |
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/** @var array<array> $headers */ |
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$headers = array_values($headers); |
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/** @var array<string> $headerKeys */ |
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$headerKeys = array_map(static function ($headerKey) { |
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return (string) $headerKey; |
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}, array_values($headerKeys)); |
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$formattedHeaders = array_combine($headerKeys, $headers); |
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if ($formattedHeaders === false) { |
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return []; |
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} |
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return $formattedHeaders; |
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} |
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/** |
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* @param string $serverParameter |
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* @return bool |
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*/ |
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private static function isServerKeyAHeader(string $serverParameter): bool |
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{ |
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return stripos($serverParameter, 'HTTP_') === 0; |
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} |
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/** |
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* @param mixed $header |
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* @return array<mixed> |
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*/ |
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private static function wrapValuesInArray($header): array |
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{ |
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return is_array($header) ? $header : [$header]; |
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} |
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/** |
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* @param mixed $headerKey |
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* @return string |
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*/ |
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private static function stripKeyOfLeadingHttpPrefix($headerKey): string |
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{ |
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return is_string($headerKey) ? str_replace('HTTP_', '', $headerKey) : ''; |
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} |
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} |
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patoui /
router
