Find a document with ObjectID in mongoDB?

Pretty sure you have to use a MongoId object, eg.

Pretty sure you have to use a MongoId object, eg $item = $collection->findOne(array( '_id' => new MongoId('4e49fd8269fd873c0a000000'))); The notes on the Querying page are a little obtuse but it does mention... Unless the user has specified otherwise, the _id field is a MongoId. The most common mistake is attepting to use a string to match a MongoId. Keep in mind that these are two different datatypes, and will not match each other in the same way that the string "array()" is not the same as an empty array.

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