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<?php class CachingProxy { private $cache = null; private $instance = null; public function __construct(Memcache $cache, $instance) { $this->cache = $cache; $this->instance = $instance; } public function __call($method, $arguments) { var_dump($method, $arguments); die; if (substr($method, 0, 3) !== 'get') { $result = call_user_func_array($method, $arguments); } else { $uniqueId = $method . serialize($arguments); $result = $this->cache->get($uniqueId); if ($result === false) { $result = call_user_func_array($method, $arguments); $this->cache->set($uniqueId, $result); } } return $result; } } class Memcache { private $data = []; public function set($key, $value) { $this->data[$key] = $value; } public function get($key) { return isset($this->data[$key]) ? $this->data[$key] : false; } } class ImportantService { } $service = new ImportantService(); $cachedService = new CachingProxy($memcacheInstance, $service); $result = $cachedService->getInformation(123); // First call goes to a data source $more = $cachedService->getInformation(123); // From cache now
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: Undefined variable $memcacheInstance in /in/dNV6g on line 49 Fatal error: Uncaught TypeError: CachingProxy::__construct(): Argument #1 ($cache) must be of type Memcache, null given, called in /in/dNV6g on line 49 and defined in /in/dNV6g:8 Stack trace: #0 /in/dNV6g(49): CachingProxy->__construct(NULL, Object(ImportantService)) #1 {main} thrown in /in/dNV6g on line 8
Process exited with code 255.
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 Warning: Undefined variable $memcacheInstance in /in/dNV6g on line 49 Fatal error: Uncaught TypeError: CachingProxy::__construct(): Argument #1 ($cache) must be of type Memcache, null given, called in /in/dNV6g on line 49 and defined in /in/dNV6g:8 Stack trace: #0 /in/dNV6g(49): CachingProxy->__construct(NULL, Object(ImportantService)) #1 {main} thrown in /in/dNV6g on line 8
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: memcacheInstance in /in/dNV6g on line 49 Fatal error: Uncaught TypeError: Argument 1 passed to CachingProxy::__construct() must be an instance of Memcache, null given, called in /in/dNV6g on line 49 and defined in /in/dNV6g:8 Stack trace: #0 /in/dNV6g(49): CachingProxy->__construct(NULL, Object(ImportantService)) #1 {main} thrown in /in/dNV6g on line 8
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Fatal error: Uncaught TypeError: Argument 1 passed to CachingProxy::__construct() must be an instance of Memcache, null given, called in /in/dNV6g on line 49 and defined in /in/dNV6g:8 Stack trace: #0 /in/dNV6g(49): CachingProxy->__construct(NULL, Object(ImportantService)) #1 {main} thrown in /in/dNV6g on line 8
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Notice: Undefined variable: memcacheInstance in /in/dNV6g on line 49 Catchable fatal error: Argument 1 passed to CachingProxy::__construct() must be an instance of Memcache, null given, called in /in/dNV6g on line 49 and defined in /in/dNV6g on line 8
Process exited with code 255.
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