PHP Mongo DB remove stopping proccess with no error - php

Question

I'm trying to get rid of a document by _id, but the PHP process stops without error, and no error in access.log, and no output if i assign a variable to remove(). Using mongodb:
version v2.4.9
$connection = new MongoClient();
if($connection == NULL) {
return "some msg";
}
$db = $connection->main;
$collection = $db->users;
$document = $collection->findOne(array('email' => $user->email));
if($document == NULL) {
// do some stuff, works fine.
} else {
$id = $document["_id"];
echo "id=".$id // outputs: 5469a22600a8ebe8418b4567
if($document["confirm"] != "true") {
echo "confirmed not true" // outputs fine
$collection->remove(array('_id' => new MongoId($id)), true);
echo "hello!"; // never occurs
}
}
EDIT: I tried this, and no output:
try {
$collection->remove(array('_id' => new MongoId($id)), true);
} catch(Exception $e) {
echo $e->getMessage();
}
EDIT: I found an answer, but I don't understand the answer because every example I've seen includes the true argument. So I won't self answer this question and leave it up to an expert.
This doesn't work:
$collection->remove(array('_id' => new MongoId($id)), true);
This doesn't work:
$collection->remove(array('_id' => new MongoId($id)), false);
This works:
$collection->remove(array('_id' => new MongoId($id)));

Answer 1

I can explain your problem but I cannot explain why you are not seeing errors, there must be something odd in your PHP setup.
Anyway, as to why your boolean only value for the second parameter does not work: it is because the PHP driver expects an array: http://php.net/manual/en/mongocollection.remove.php the examples you worked from were either incredibly old (Since the change happened 1.0.5 http://php.net/manual/en/mongocollection.remove.php#refsect1-mongocollection.remove-changelog) or incorrect.