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run code in 200+ php & hhvm versions
Bugs & Features
<?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
based on bDGJJ
Output for 7.0.0 - 7.2.0
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 5.4.0 - 5.6.28
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.