php链接mongo数据库

$conn = new Mongo("mongodb://admin:admin@localhost:27017/local"); ///这个就是第11行

这么写完之后报错

( ! ) Deprecated: main(): The Mongo class is deprecated, please use the MongoClient class in D:\bzyweb\test2\conn.php on line 11
Call Stack
# Time Memory Function Location
1 0.0010 238592 {main}( ) ..\conn.php:0

( ! ) Fatal error: Uncaught exception 'MongoConnectionException' with message 'Failed to connect to: localhost:27017: Authentication failed on database 'local' with username 'admin': auth fails' in D:\bzyweb\test2\conn.php on line 11
( ! ) MongoConnectionException: Failed to connect to: localhost:27017: Authentication failed on database 'local' with username 'admin': auth fails in D:\bzyweb\test2\conn.php on line 11
Call Stack
# Time Memory Function Location
1 0.0010 238592 {main}( ) ..\conn.php:0
2 0.0010 239720 __construct ( ) ..\conn.php:11

回复讨论(解决方案)

Deprecated: main(): The Mongo class is deprecated, please use the MongoClient class
反对：main()：Mongo类是过时的，请使用mongoclient类

echo "mongo contact:
";
//$DB = new PDO("mongodb:host=localhost;port=27017;dbname=aaa","admin","admin");
$conn = new MongoClient("mongodb://admin:admin@localhost2:27017/local");
?>

错误提示
mongo contact:

( ! ) Fatal error: Uncaught exception 'MongoConnectionException' with message 'MongoClient::__construct(): ' in D:\bzyweb\test2\conn.php on line 4
( ! ) MongoConnectionException: MongoClient::__construct(): in D:\bzyweb\test2\conn.php on line 4
Call Stack
# Time Memory Function Location
1 0.0000 240416 {main}( ) ..\conn.php:0
2 0.0000 240672 __construct ( ) ..\conn.php:4

你的下图是什么？mongo 管理器？
你看看他是怎么写的

下图是一个mongoweb的管理地址，我看了好多写法，好像链接都是那么写的，不清楚为什么我的出错了，所以贴出来数据库的结构，我想这样能表述的更清晰一点

$dsn="mongodb://localhost:27017/admin:admin/aaa";
$m=new MongoClient($dsn);
没有报错了