MongoDb SearchQuery问题

Question

I have a database and a table user. when i perform below code i got output as below.

$searchQuery = array('userID' => '2');
$collection = $db->mydatabase->users;
$cursor = $collection->find()->limit(2);
foreach ($cursor as $doc) {
    var_dump($doc);
}

Output:

array(4) {
  '_id' =>
  class MongoId#8 (1) {
    public $$id =>
    string(24) "56c8216d7f8b9a0e148b4567"
  }
  'userID' =>
  int(7)
  'lastTimeOnline' =>
  string(19) "2016-02-20 01:48:53"
  'displayName' =>
  string(0) ""
}
array(4) {
  '_id' =>
  class MongoId#9 (1) {
    public $$id =>
    string(24) "56c8216d7f8b9a0e148b4568"
  }
  'userID' =>
  int(2)
  'lastTimeOnline' =>
  string(19) "2016-02-20 01:48:53"
  'displayName' =>
  string(0) ""
}

Now i need to find only those records whose userID is 2, so i change the code as below.

$searchQuery = array('userID' => '2');
$collection = $db->mydatabase->users;
$cursor = $collection->find($searchQuery)->limit(2);
foreach ($cursor as $doc) {
    var_dump($doc);
}

but now the output is blank :-(

I have two doubts. A) why 2nd code to fetch userId=2 is not working B)why on both cases var_dump($cursor) is giving below output and why not detail of $doc

class MongoCursor#5 (0) {
}

Answer 1

Seems like the userID in database is saved as Integer and your are trying to query using a string parameter, try to change the query array to the following:

$searchQuery = array('userID' => 2);