Uncaught Error: Call to undefined method MongoDB\\Collection::update() - php

Question

I updated a environment. I upgraded PHP and Mongo. The code was using the legacy driver but now I'm using mongodb. I'm also using mongo-php-library. This code snippet is broken now and I'm not sure how to fix it. I've read about updateOne and replaceOne but I'm not sure how to use it:
function update($collection,$criteria,$data,$insertIfNotExists = false)
{
if (!isset($this->collection[$collection])) {
$this->collection[$collection] = self::$database->selectCollection($collection);
}
if ($insertIfNotExists) {
$oldData = $this->collection[$collection]->findOne($criteria);
if ($oldData == NULL) {
$data['createdDate'] = date("Y-m-d H:i:s");
$data['modifiedDate'] = (isset($data['modifiedDate'])) ? $data['modifiedDate']:date("Y-m-d H:i:s");
return ($this->collection[$collection]->insert($data)) ? array('status'=>'ok'):array('status'=>'error','error'=>'unknown_error');
} else {
$newData = $oldData;
foreach($data as $n=>$v) {
$newData[$n] = $v;
}
$newData['modifiedDate'] = (isset($newData['modifiedDate'])) ? $newData['modifiedDate']:date("Y-m-d H:i:s");
return ($this->collection[$collection]->update($criteria,$newData)) ? array('status'=>'ok'):array('status'=>'error','error'=>'unknown_error');
}
} else {
return ($this->collection[$collection]->update($criteria,$data)) ? array('status'=>'ok'):array('status'=>'error','error'=>'unknown_error');
}
}

Answer 1

The new driver changed the name of some methods. Instead of update() (that was used to update one or more documents), now you have updateOne() and updateMany(). The same applies to the other legacy methods insert() and remove(). You can get all further information you need on these changes in PHP MongoDB's Extension Docs and in MongoDB PHP Library.
So, just changing to the code below would fix that error:
$this->collection[$collection]->updateOne($criteria,$data)
Edit
Seems that you only need to update the field modifiedDate, so you can do the following:
$criteria = ['number' => '999'];
$newData = ['modifiedDate' => '2019-07-11 03:00:00'];
$this->collection[$collection]->updateOne(
$criteria,
'$set' => $newData
);
More info here: Update One Document