Geek Answer

<?php interface LRUCache{ /** •@param string $key •@param string $value •@return bool $result • •Stores value against the key in the cache */ public function insertIntoCache($key,$value); /** •@param string $key •@return string $value •Gets the value of a key from the cache */ public function getFromCache($key); /** Purge the entire cache */ public function purgeCache(); /** •@return int $count •Gets the number of successful cache hits so far */ public function allCacheHits(); /** •@return int $count •Gets the number of unsuccessful cache hits so far **/ public function allCacheMissed(); } class Cache implements LRUCache{ // int the max number of elements the cache supports private $capaci...