// Connect to memcached server $memcached = new Memcached(); $memcached->addServer('localhost', 11211); // Cache query result for 10 minutes $cache_key = md5('SELECT * FROM users'); $result = $memcached->get($cache_key); if (!$result) { $result = $db->query('SELECT * FROM users'); $memcached->add($cache_key, $result, 600); } // Display query result foreach ($result as $row) { echo $row['name'] . "\n"; }
// Connect to redis server $redis = new Redis(); $redis->connect('localhost', 6379); // Cache query result for 10 minutes $cache_key = md5('SELECT * FROM users'); $result = $redis->get($cache_key); if (!$result) { $result = $db->query('SELECT * FROM users'); $redis->set($cache_key, serialize($result), 600); } // Display query result foreach (unserialize($result) as $row) { echo $row['name'] . "\n"; }In the above examples, we have used either PHP Memcached or PHP Redis extension to cache query results. We have specified the cache key and the cache time for each query result. We have also checked if the result is already cached and retrieved it from the cache if it is. The package library for PHP DB cache depends on the caching solution used. For example, if we use PHP Memcached extension, we need to install the Memcached extension and the Memcached PHP library. Likewise, if we use PHP Redis extension, we need to install the Redis extension and the Redis PHP library.