PHP操作Redis 含Redis密码验证

<?php  
   $redis = new Redis(); 
   $redis->connect('127.0.0.1', 6379); //连接Redis
   $redis->auth('mypasswords123sdfeak'); //密码验证
   $redis->select(2);//选择数据库2
   $redis->set( "testKey" , "Hello Redis"); //设置测试key
   echo $redis->get("testKey");//输出value
?>