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run code in 500+ PHP versions simultaneously
<?php namespace RefactoringGuru\Proxy\RealWorld; /** * Интерфейс Субъекта описывает интерфейс реального объекта. * * Дело в том, что у большинства приложений нет чётко определённого интерфейса. * В этом случае лучше было бы расширить Заместителя за счёт существующего * класса приложения. Если это неудобно, тогда первым шагом должно быть * извлечение правильного интерфейса. */ interface Downloader { public function download(string $url): string; } /** * Реальный Субъект делает реальную работу, хотя и не самым эффективным * способом. Когда клиент пытается загрузить тот же самый файл во второй раз, * наш загрузчик именно это и делает, вместо того, чтобы извлечь результат из * кэша. */ class SimpleDownloader implements Downloader { public function download(string $url): string { echo "Downloading a file from the Internet.\n"; $result = file_get_contents($url); echo "Downloaded bytes: " . strlen($result) . "\n"; return $result; } } /** * Класс Заместителя – это попытка сделать загрузку более эффективной. Он * обёртывает реальный объект загрузчика и делегирует ему первые запросы на * скачивание. Затем результат кэшируется, что позволяет последующим вызовам * возвращать уже имеющийся файл вместо его повторной загрузки. */ class CachingDownloader implements Downloader { /** * @var SimpleDownloader */ private $downloader; /** * @var string[] */ private $cache = []; public function __construct(SimpleDownloader $downloader) { $this->downloader = $downloader; } public function download(string $url): string { if (!isset($this->cache[$url])) { echo "CacheProxy MISS. "; $result = $this->downloader->download($url); $this->cache[$url] = $result; } else { echo "CacheProxy HIT. Retrieving result from cache.\n"; } return $this->cache[$url]; } } /** * Клиентский код может выдать несколько похожих запросов на загрузку. В этом * случае кэширующий заместитель экономит время и трафик, подавая результаты из * кэша. * * Клиент не знает, что он работает с заместителем, потому что он работает с * загрузчиками через абстрактный интерфейс. */ function clientCode(Downloader $subject) { // ... $result = $subject->download("http://example.com/"); // Повторяющиеся запросы на загрузку могут кэшироваться для увеличения // скорости. $result = $subject->download("http://example.com/"); // ... } echo "Executing client code with real subject:\n"; $realSubject = new SimpleDownloader(); clientCode($realSubject); echo "\n"; echo "Executing the same client code with a proxy:\n"; $proxy = new CachingDownloader($realSubject); clientCode($proxy);
Output for 8.1.34, 8.2.30, 8.3.28 - 8.3.30, 8.4.15 - 8.4.18, 8.5.0 - 8.5.3
Executing client code with real subject: Downloading a file from the Internet. Warning: file_get_contents(): php_network_getaddresses: getaddrinfo for example.com failed: Name or service not known in /in/6uCRG on line 29 Warning: file_get_contents(http://example.com/): Failed to open stream: php_network_getaddresses: getaddrinfo for example.com failed: Name or service not known in /in/6uCRG on line 29 Downloaded bytes: 0 Downloading a file from the Internet. Warning: file_get_contents(): php_network_getaddresses: getaddrinfo for example.com failed: Name or service not known in /in/6uCRG on line 29 Warning: file_get_contents(http://example.com/): Failed to open stream: php_network_getaddresses: getaddrinfo for example.com failed: Name or service not known in /in/6uCRG on line 29 Downloaded bytes: 0 Executing the same client code with a proxy: CacheProxy MISS. Downloading a file from the Internet. Warning: file_get_contents(): php_network_getaddresses: getaddrinfo for example.com failed: Name or service not known in /in/6uCRG on line 29 Warning: file_get_contents(http://example.com/): Failed to open stream: php_network_getaddresses: getaddrinfo for example.com failed: Name or service not known in /in/6uCRG on line 29 Downloaded bytes: 0 CacheProxy HIT. Retrieving result from cache.
Output for 8.1.23 - 8.1.33, 8.2.10 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.27, 8.4.1 - 8.4.14
Executing client code with real subject: Downloading a file from the Internet. Warning: file_get_contents(): php_network_getaddresses: getaddrinfo for example.com failed: System error in /in/6uCRG on line 29 Warning: file_get_contents(http://example.com/): Failed to open stream: php_network_getaddresses: getaddrinfo for example.com failed: System error in /in/6uCRG on line 29 Downloaded bytes: 0 Downloading a file from the Internet. Warning: file_get_contents(): php_network_getaddresses: getaddrinfo for example.com failed: System error in /in/6uCRG on line 29 Warning: file_get_contents(http://example.com/): Failed to open stream: php_network_getaddresses: getaddrinfo for example.com failed: System error in /in/6uCRG on line 29 Downloaded bytes: 0 Executing the same client code with a proxy: CacheProxy MISS. Downloading a file from the Internet. Warning: file_get_contents(): php_network_getaddresses: getaddrinfo for example.com failed: System error in /in/6uCRG on line 29 Warning: file_get_contents(http://example.com/): Failed to open stream: php_network_getaddresses: getaddrinfo for example.com failed: System error in /in/6uCRG on line 29 Downloaded bytes: 0 CacheProxy HIT. Retrieving result from cache.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Executing client code with real subject: Downloading a file from the Internet. Warning: file_get_contents(): php_network_getaddresses: getaddrinfo for example.com failed: System error in /in/6uCRG on line 29 Warning: file_get_contents(http://example.com/): Failed to open stream: php_network_getaddresses: getaddrinfo for example.com failed: System error in /in/6uCRG on line 29 Downloaded bytes: 0 Downloading a file from the Internet. Warning: file_get_contents(): php_network_getaddresses: getaddrinfo for example.com failed: System error in /in/6uCRG on line 29 Warning: file_get_contents(http://example.com/): Failed to open stream: php_network_getaddresses: getaddrinfo for example.com failed: System error in /in/6uCRG on line 29 Downloaded bytes: 0 Executing the same client code with a proxy: CacheProxy MISS. Downloading a file from the Internet. Warning: file_get_contents(): php_network_getaddresses: getaddrinfo for example.com failed: System error in /in/6uCRG on line 29 Warning: file_get_contents(http://example.com/): Failed to open stream: php_network_getaddresses: getaddrinfo for example.com failed: System error in /in/6uCRG on line 29 Downloaded bytes: 0 CacheProxy HIT. Retrieving result from cache.
Output for 8.0.9
Executing client code with real subject: Downloading a file from the Internet. Warning: file_get_contents(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /in/6uCRG on line 29 Warning: file_get_contents(http://example.com/): Failed to open stream: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /in/6uCRG on line 29 Downloaded bytes: 0 Downloading a file from the Internet. Warning: file_get_contents(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /in/6uCRG on line 29 Warning: file_get_contents(http://example.com/): Failed to open stream: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /in/6uCRG on line 29 Downloaded bytes: 0 Executing the same client code with a proxy: CacheProxy MISS. Downloading a file from the Internet. Warning: file_get_contents(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /in/6uCRG on line 29 Warning: file_get_contents(http://example.com/): Failed to open stream: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /in/6uCRG on line 29 Downloaded bytes: 0 CacheProxy HIT. Retrieving result from cache.
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