一个简单的memcache类-PHP源码

 &＃39;127.0.0.1&＃39;, 
        &＃39;default_port&＃39; => 11211, 
        &＃39;default_weight&＃39; => 1, 
    ); 
 
    public function __construct() { 
 
        $this->_memcached = new Memcache($this->_memcached_conf); 
        $this->_memcached->addserver(&＃39;127.0.0.1&＃39;, &＃39;11211&＃39;); 
    } 
 
    // Save data into cache 
    public function save($key, $data, $ttl = 3600) { 
        if (get_class($this->_memcached) == &＃39;Memcached&＃39;) { 
            return $this->_memcached->set($key, array($data, time(), $ttl), $ttl); 
        } else if (get_class($this->_memcached) == &＃39;Memcache&＃39;) { 
            return $this->_memcached->set($key, array($data, time(), $ttl), 0, $ttl); 
        } 
 
        return false; 
    } 
 
    // Fetch data from cache 
 
    public function get($key) { 
        $data = $this->_memcached->get($key); 
        return (is_array($data)) ? $data[0] : false; 
    } 
 
    // Detele data from cache 
    public function delete($key) { 
        return $this->_memcached->delete($key); 
    } 
 
    //   
    // clean will marks all the items as expired, 
    so occupied memory will be overwritten by new items. 
    public function clean() { 
        return $this->_memcached->flush(); 
    } 
 
    public function ServerStatus() { 
        $server_status = $this->_memcached->getstats(); 
        echo ""; 
        echo ""; 
    echo ""; 
        echo ""; 
        echo ""; 
        echo "";
        echo ""; 
        echo ""; 
        echo ""; 
        echo ""; 
        echo ""; 
        echo ""; 
     $percCacheHit = ((real) $server_status["get_hits"] / (real) $server_status["cmd_get"] * 100); 
        $percCacheHit = round($percCacheHit, 3); 
        $percCacheMiss = 100 - $percCacheHit; 
        echo ""; 
        echo ""; 
        $MBRead = (real) $server_status["bytes_read"] / (1024 * 1024); 
        echo ""; 
        $MBWrite = (real) $server_status["bytes_written"] / (1024 * 1024); 
        echo ""; 
        $MBSize = (real) $server_status["limit_maxbytes"] / (1024 * 1024); 
        echo ""; 
        echo ""; 
        echo "
Memcache Server version:
 " . $server_status["version"] . "
        
Process id of this server process 
" . $server_status["pid"] . "
    
Number of seconds this server has been running 
        
" . $server_status["uptime"] . "
Accumulated user time for this process 
        
" . $server_status["rusage_user"] . " seconds
Accumulated system time for this process 
        
" . $server_status["rusage_system"] . " seconds
Total number of items stored by this server ever since it started
        
" . $server_status["total_items"] . "
Number of open connections 
        
" . $server_status["curr_connections"] . "

        
Total number of connections opened since the server started running 
        
" . $server_status["total_connections"] . "
Number of connection structures allocated by the server 
        
" . $server_status["connection_structures"] . "
Cumulative number of retrieval requests 
        
" . $server_status["cmd_get"] . "
 Cumulative number of storage requests 
        
" . $server_status["cmd_set"] . "
Number of keys that have been requested and found present 
        
" . $server_status["get_hits"] . " ($percCacheHit%)
Number of items that have been requested and not found 
        
" . $server_status["get_misses"] . "($percCacheMiss%)
Total number of bytes read by this server from network 
        
" . $MBRead . " Mega Bytes
Total number of bytes sent by this server to network 
        
" . $MBWrite . " Mega Bytes
Number of bytes this server is allowed to use for storage.
        
" . $MBSize . " Mega Bytes

        
Number of valid items removed from cache to free memory for new items.
        
" . $server_status["evictions"] . "
        
"; 
    } 
 
} 
 
?>

2. 操作实例

require_once&＃39;memcache2.php&＃39;; 
$getData = new cache_memcache (); 
$res = $getData->get("Shibly"); 
if ($res) { 
    echo $res; 
} else { 
    echo "No data to display. The cache may be destroyed"; 
}
 
 
 
$srv_stat = new cache_memcache(); 
$srv_stat->ServerStatus();
 
 
require_once(&＃39;memcache2.php&＃39;); 
$setData = new cache_memcache(); 
$data =  $setData->save("Shibly","Hello there ! you&＃39;ve stored me in a memcached server !"); 
 
if($data) 
{ 
    echo "You&＃39;ve successfully stored data in the memcached server.
     Please Run the example_get_cache.php file to retrive your data";
} 
 
else{ 
    echo "There is something wrong with your caching server"; 
}

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