Detailed example of how to connect Mongodb to a remote database under PHP

 D:\mongodb\bin> mongod --dbpath D:\mongodb\data --logpath=D:\mongodb\logs\mongodb.log --logappend 
 D:\mongodb\bin>  mongod -dbpath "d:\mongodb\data\db"
D:\mongodb\bin> 
mongod --config "d:\mongodb\mongo.conf"

dbpath=D:\Program Files\MongoDB\Server\3.2\data #数据库路径 
logpath=D:\Program Files\MongoDB\Server\3.2\logs\mongo.log #日志输出文件路径 
logappend=true #错误日志采用追加模式 
journal=true #启用日志文件，默认启用 
quiet=true #这个选项可以过滤掉一些无用的日志信息，若需要调试使用请设置为false 
port=27017 #端口号 默认为27017

mongod --config "D:\Program Files\MongoDB\Server\3.2\mongo.conf" --install --serviceName "MongoDB" 
net start MongoDB

$conn = new MongoClient("mongodb://xxx",array('username'=>'username','password'=>'password'));
$db = $conn->test; 
$collection = $db->test; 
$cursor = $collection->find(); 
foreach ($cursor as $id => $value) { 
  echo "$id: "; var_dump($value); echo "<br>";    
}