Deleting a document based off of it's ObjectId [duplicate] - php

Question

I was successful in deleting documents using other fields but could not delete using "_id" field. The PHP page says that the id should be a string (which it is by default), but what I was trying to do is, giving an id of my own which is an integer, and am doing the following:
This is my document structure:
$document = array (
'_id' => new MongoInt32(1),
'cust_id' => 'abc124'
)
This is how I am trying to delete:
$collection->remove(array('_id' => new MongoId(1)), true);
But this is giving me an error. PHP php manual says:
"To remove a document based on its ID, you need to ensure that you pass the ID as a MongoID object rather than just a string:"
But my id is a int and I cant figure out the process to delete the document referenced by the id.
Your help would be appreciated. Thank You.

Answer 1

You've used a normal integer (MongoInt32) as _id field. And MongoInt32 is not the same as MongoID. They are two different classes. You are suppose to delete it with:
$collection->remove( array( '_id' => new MongoInt32(1) ) );
Additional Information:
MongoId is used as value for an _id field if you don't set a value yourself, such as with:
$collection->insert( array( 'cust_id' => 'abc124' ) );
If you retrieve this document, and var_dump() that you will see:
array(2) {
'_id' =>
class MongoId#6 (1) {
public $$id =>
string(24) "51ee74e944670a09028d4fc9"
}
'cust_id' =>
string(6) "abc124"
}
The note in the docs mean that you can't remove that document now with:
$collection->remove( array( '_id' => '51ee74e944670a09028d4fc9' ) );
But instead you will need to use:
$collection->remove( array( '_id' => new MongoID( '51ee74e944670a09028d4fc9' ) ) );
As last point I'd like to raise that you don't really have to use new MongoInt32(1) in the first place, you can just use:
$document = array (
'_id' => 1,
'cust_id' => 'abc124'
);
You only need MongoInt32/MongoInt64 in case you're on a 32-bit platform (or Windows) and need to deal with large numbers.

Answer 2

This should work:
$collection->deleteOne( array( '_id' => new MongoDB\BSON\ObjectId ($_id )) );

Answer 3

"To remove a document based on its ID, you need to ensure that you pass the ID as a MongoID object rather than just a string:"
Normally what the PHP manual states is true but not for you. You have changed the type of your _id to something other than an ObjectId (aka a MongoId).
With this in mind you need to search by that other object which is a MongoInt32:
$db->collection->remove(array('_id'=>new MongoInt32(1)))