(mongodb >=2.1.0)
MongoDB\Driver\BulkWriteCommandResult::getUpdateResults — Returns verbose results for successful updates
This function has no parameters.
   Returns a document containing the result of each successful update
   operation, or null if verbose results were not requested. The document
   keys will correspond to the index of the write operation from
   MongoDB\Driver\BulkWriteCommand.
  
Example #1 MongoDB\Driver\BulkWriteCommandResult::getUpdateResults() example
<?php
$manager = new MongoDB\Driver\Manager;
$bulk = new MongoDB\Driver\BulkWriteCommand(['verboseResults' => true]);
$bulk->insertOne('db.coll', ['x' => 1]);
$bulk->updateOne('db.coll', ['x' => 1], ['$set' => ['y' => 3]]);
$bulk->updateOne('db.coll', ['x' => 2], ['$set' => ['y' => 1]], ['upsert' => true]);
$bulk->updateOne('db.coll', ['x' => 3], ['$set' => ['y' => 2]], ['upsert' => true]);
$bulk->deleteMany('db.coll', []);
$result = $manager->executeBulkWriteCommand($bulk);
var_dump($result->getUpdateResults()->toPHP());
?>The above example will output something similar to:
object(stdClass)#16 (3) {
  ["1"]=>
  object(stdClass)#7 (2) {
    ["matchedCount"]=>
    object(MongoDB\BSON\Int64)#5 (1) {
      ["integer"]=>
      string(1) "1"
    }
    ["modifiedCount"]=>
    object(MongoDB\BSON\Int64)#6 (1) {
      ["integer"]=>
      string(1) "1"
    }
  }
  ["2"]=>
  object(stdClass)#11 (3) {
    ["matchedCount"]=>
    object(MongoDB\BSON\Int64)#8 (1) {
      ["integer"]=>
      string(1) "1"
    }
    ["modifiedCount"]=>
    object(MongoDB\BSON\Int64)#9 (1) {
      ["integer"]=>
      string(1) "0"
    }
    ["upsertedId"]=>
    object(MongoDB\BSON\ObjectId)#10 (1) {
      ["oid"]=>
      string(24) "67f7eb9b1f198bbcb880d575"
    }
  }
  ["3"]=>
  object(stdClass)#15 (3) {
    ["matchedCount"]=>
    object(MongoDB\BSON\Int64)#12 (1) {
      ["integer"]=>
      string(1) "1"
    }
    ["modifiedCount"]=>
    object(MongoDB\BSON\Int64)#13 (1) {
      ["integer"]=>
      string(1) "0"
    }
    ["upsertedId"]=>
    object(MongoDB\BSON\ObjectId)#14 (1) {
      ["oid"]=>
      string(24) "67f7eb9b1f198bbcb880d576"
    }
  }
}
