name : UriComparator.php <?php declare(strict_types=1); namespace GuzzleHttp\Psr7; use Psr\Http\Message\UriInterface; /** * Provides methods to determine if a modified URL should be considered cross-origin. * * @author Graham Campbell */ final class UriComparator { /** * Determines if a modified URL should be considered cross-origin with * respect to an original URL. */ public static function isCrossOrigin(UriInterface $original, UriInterface $modified): bool { if (\strcasecmp($original->getHost(), $modified->getHost()) !== 0) { return true; } if ($original->getScheme() !== $modified->getScheme()) { return true; } if (self::computePort($original) !== self::computePort($modified)) { return true; } return false; } private static function computePort(UriInterface $uri): int { $port = $uri->getPort(); if (null !== $port) { return $port; } return 'https' === $uri->getScheme() ? 443 : 80; } private function __construct() { // cannot be instantiated } }