每天laravel-20160620|MemcachedConnector

namespace Illuminate\Cache;

use Memcached;
use Illuminate\Contracts\Cache\Store;
// a namespace about the user
class MemcachedStore extends TaggableStore implements Store
{// a Store about Memcache Store
/**
* The Memcached instance.
* The Memcached instance.
* @var \Memcached
*/
protected $memcached;

/** * A string that should be prepended to keys. * A string that should be prepended to keys. * @var string */protected $prefix;// a string about the prefix.  with connection about the/** * Create a new Memcached store. * Create a new Memcached store. * @param  \Memcached  $memcached * @param  string      $prefix * @return void */public function __construct($memcached, $prefix = ''){    $this->setPrefix($prefix);    $this->memcached = $memcached;}// a supper big prefix/** * Retrieve an item from the cache by key. * Retrieve an item form the cache by key. * @param  string|array  $key * @return mixed */public function get($key){    $value = $this->memcached->get($this->prefix.$key);// a way to get value    if ($this->memcached->getResultCode() == 0) {        return $value;    }// if return value,}// get a method/** * Retrieve multiple items from the cache by key. * Retrieve multiple items from the cache by key. * * Items not found in the cache will have a null value. * Items not found in the cache will have a null value. * @param  array  $keys * @return array */public function many(array $keys){    $prefixedKeys = array_map(function ($key) {        return $this->prefix.$key;    }, $keys);// you are master ,    $values = $this->memcached->getMulti($prefixedKeys, null, Memcached::GET_PRESERVE_ORDER);  // more get    if ($this->memcached->getResultCode() != 0) {        return array_fill_keys($keys, null);    }// get the result     return array_combine($keys, $values);}// get a lot of keys