Several problems of PHP connection MongoDB

Connection method There are many online, this is not superfluous, the main record of the problems encountered.

When you select a database, you can use the following statement:

$mongo = new MONGO ("Mongodb://127.0.0.1:27017/admin:admin");

$db = $mongo->dbname.

This time there is a problem, in general, this type of writing can get the database, but if the name of the database has special characters, for example, the database name is: Edu-dashi, then write this method will be an error, so you must change the way:

$db = $mongo->selectdb ("Edu-dashi");

Similarly, if the collection name contains special characters, you should follow the following syntax:

$collection = $db->selectcollection ("collection");

If you do not add any selection criteria, you can get the data normally, and you cannot get the data as long as you add any selection criteria. May be the problem, please add on: Ini_set (' Mongo.long_as_object ', 1);

Source: http://blog.csdn.net/zzm628/article/details/48655631