<?php class cache_memcache { private $_memcached; protected $_memcached_conf = array( 'default_host' => '127.0.0.1', 'default_port' => 11211, 'default_weight' => 1, ); public function __construct() { $this->_memcached = new Memcache($this->_memcached_conf); $this->_memcached->addserver('127.0.0.1', '11211'); } // Save data into cache public function save($key, $data, $ttl = 3600) { if (get_class($this->_memcached) == 'Memcached') { return $this->_memcached->set($key, array($data, time(), $ttl), $ttl); } else if (get_class($this->_memcached) == 'Memcache') { 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 "<table border='1'>"; echo "<tr><td>Memcache Server version:</td><td> " . $server_status["version"] . "</td> </tr>"; echo "<tr><td>Process id of this server process </td><td>" . $server_status["pid"] . "</td> </tr>"; echo "<tr><td>Number of seconds this server has been running </td> <td>" . $server_status["uptime"] . "</td></tr>"; echo "<tr><td>Accumulated user time for this process </td> <td>" . $server_status["rusage_user"] . " seconds</td></tr>"; echo "<tr><td>Accumulated system time for this process </td> <td>" . $server_status["rusage_system"] . " seconds</td></tr>"; echo "<tr><td>Total number of items stored by this server ever since it started</td> <td>" . $server_status["total_items"] . "</td></tr>"; echo "<tr><td>Number of open connections </td> <td>" . $server_status["curr_connections"] . "</td></tr>"; echo "<tr> <td>Total number of connections opened since the server started running </td> <td>" . $server_status["total_connections"] . "</td></tr>"; echo "<tr><td>Number of connection structures allocated by the server </td> <td>" . $server_status["connection_structures"] . "</td></tr>"; echo "<tr><td>Cumulative number of retrieval requests </td> <td>" . $server_status["cmd_get"] . "</td></tr>"; echo "<tr><td> Cumulative number of storage requests </td> <td>" . $server_status["cmd_set"] . "</td></tr>"; $percCacheHit = ((real) $server_status["get_hits"] / (real) $server_status["cmd_get"] * 100); $percCacheHit = round($percCacheHit, 3); $percCacheMiss = 100 - $percCacheHit; echo "<tr><td>Number of keys that have been requested and found present </td> <td>" . $server_status["get_hits"] . " ($percCacheHit%)</td></tr>"; echo "<tr><td>Number of items that have been requested and not found </td> <td>" . $server_status["get_misses"] . "($percCacheMiss%)</td></tr>"; $MBRead = (real) $server_status["bytes_read"] / (1024 * 1024); echo "<tr><td>Total number of bytes read by this server from network </td> <td>" . $MBRead . " Mega Bytes</td></tr>"; $MBWrite = (real) $server_status["bytes_written"] / (1024 * 1024); echo "<tr><td>Total number of bytes sent by this server to network </td> <td>" . $MBWrite . " Mega Bytes</td></tr>"; $MBSize = (real) $server_status["limit_maxbytes"] / (1024 * 1024); echo "<tr><td>Number of bytes this server is allowed to use for storage.</td> <td>" . $MBSize . " Mega Bytes</td></tr>"; echo "<tr> <td>Number of valid items removed from cache to free memory for new items.</td> <td>" . $server_status["evictions"] . "</td> </tr>"; echo "</table>"; } } ?>
2. 操作实例
require_once'memcache2.php'; $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('memcache2.php'); $setData = new cache_memcache(); $data = $setData->save("Shibly","Hello there ! you've stored me in a memcached server !"); if($data) { echo "You'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"; }
以上就是一个简单的memcache类的内容,更多相关内容请关注PHP中文网(www.php.cn)!
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