//连接远程主机默认端口
$conn = new Mongo(\'test.com\');

//连接远程主机22011端口
$conn = new Mongo(\'test.com:22011\');

//MongoDB有用户名密码
$conn = new Mongo(\"mongodb://${username}:${password}@localhost\")

//MongoDB有用户名密码并指定数据库blog
$conn = new Mongo(\"mongodb://${username}:${password}@localhost/blog\");

//多个服务器
$conn = new Mongo(\"mongodb://localhost:27017,localhost:27018\");
//选择数据库blog
$db = $conn->blog;
//制定结果集（表名：users）
$collection = $db->users;
//新增
$user = array(\'name\' => \'caleng\', \'email\' => \'admin#admin.com\');
$collection->insert($user);
//修改
$newdata = array(\'$set\' => array(\"email\" => \"test@test.com\"));
$collection->update(array(\"name\" => \"caleng\"), $newdata);
//删除
$collection->remove(array(\'name\'=>\'caleng\'), array(\"justOne\" => true));
//查找
$cursor = $collection->find();
var_dump($cursor);
//查找一条
$user = $collection->findOne(array(\'name\' => \'caleng\'), array(\'email\'));
var_dump($user);
//关闭数据库
$conn->close();