update a mongodb collection in php

Question

I am trying to update a part of mongodb collection in php. So I passed two parameters $id and $val using html form and I would like to update the value of a document with id=$id to val=$val. this is what I did so far in my php code, but I couldn't still get the document updated. your help is needed

$m = new MongoClient();
$db=$connection->mydb;
$user_collection=$db->mycollection;
$user_collection->update({"_id": ObjectId($id)},{$set: "value":$val}});

Thanks in advance

Answer 1

{"_id": ObjectId($id)},{$set: "value":$val}}绝不是有效的PHP代码，请查看如何编写数组

Answer 2

据我所知，正确的语法是 -

$user_collection->updateOne(['_id' => new \MongoDB\BSON\ObjectID($id)], ['$set' => ['value' => $val]]);