利用php操作memcache缓存的基础方法示例

<?php   //连接  $mem = new Memcache;  $mem->connect("127.0.0.1", 11211) or die ("Could not connect");  //显示版本  $version = $mem->getVersion();  echo "Memcached Server version: ".$version."<br>";  //保存数据  $mem->set('key1', 'This is first value', 0, 60);  $val = $mem->get('key1');  echo "Get key1 value: " . $val ."<br>";  //替换数据  $mem->replace('key1', 'This is replace value', 0, 60);  $val = $mem->get('key1');  echo "Get key1 value: " . $val . "<br>";  //保存数组  $arr = array('aaa', 'bbb', 'ccc', 'ddd');  $mem->set('key2', $arr, 0, 60);  $val2 = $mem->get('key2');  echo "Get key2 value: ";  print_r($val2);  echo "<br>";   //对数组进行序列化,在网络传输的时候，为了保证，数据类型的不丢失，先序列化，再发生.  //$arr1=serialize($arr);  $arr2=json_encode($arr1);  print_r($arr2);   //删除数据  $mem->delete('key1');  $val = $mem->get('key1');  echo "Get key1 value: " . $val . "<br>";  //清除所有数据  $mem->flush();  $val2 = $mem->get('key2');  echo "Get key2 value: ";  print_r($val2);  echo "<br>";  //关闭连接  $mem->close();  ?> 

<?php   //1.实例化一个Memcache对象  $mem=new Memcache();   //2. 连接到指定的memcache中  // $mem->connect("127.0.0.1",11211);   //如果我们网站，需要多个memached缓存系统,如下使用分布式  $mem->addServer("192.168.1.100",11211);  $mem->addServer("192.168.1.200",11211);  $mem->addServer("192.168.1.222",11211);   //创建多个memcache服务使用addServer 会根据负载均衡算法，自动放入每个服务器  $mem->add("name","zs",0,100);  ?>