Using findOne in mongodb to get element with max id

Question

I am trying to retrieve one element from a mongo collection, the one with the greatest _id field. I know this can be done by querying:

db.collection.find().s         


        

Answer 1

$maxId="";

$Cursor =$collection->find();

foreach($cursor as $document) { 
    $maxid =max($arr=(array($document['id'])));
}

print_r($maxid+1);