mongo-php-library | The Official MongoDB PHP library

mongo-php-library (written in PHP) is a high-level abstraction around the lower-level MongoDB PHP driver (mongodb extension). MongoDB driver mongodb is written in C and provides only a minimal API for core driver functionality: commands, queries, writes, connection management, and BSON serialization. Therefore PHP developers will need mongo-php-library to provide the easy-to-use higher level APIs, such as query builders, individual command helper methods, and GridFS.

mongo-php-library is officially supported by MongoDB. There is no issue or concern to its performance and features as it's the only choice, unless you decide to develop yourself a customized/optimized library, which may ends up in reinventing the same wheel.

Previously the legacy MongoDB PHP driver provides instead the high level APIs, but MongoDB decide to supersede it with current mongodb extension, so the legacy driver only supports up to PHP 5.6 and MongoDB 3.0. The reason for this is unknown, but we guess MongoDB wants to keep the MongoDB PHP driver at low level and develops a PHP library on top of this to facilitate their support for PHP 7 and subsequent PHP upgrades.

Well, clearly your 'logger' wants to have an array of data. I guess it might be JSON format so you could try to json_decode it before entering it into your logger. It would be better to log to something else first to actually see the 'pushed' data first (a simple var dump will do).

Also, I do not have enough reputation yet to reply directly so please dont comment that this should have been a direct 'reply';

Reading this post and not finding anything newer on the subject I arrived to the conclusion that developers of the driver don't provide the php sources and leave it to the IDE developers to provide STUBs for the different fuctions of the driver in a way the IDE can recognize the functions and provide syntax checking and documentations popups.

Following this question, I finally ended up finding a JetBrains GitHub where there are many different stubs for PHPStrom, this one among them.

So I copied the file and added it to my project as part of the sources. And that solved my problem.

As you have discovered, the $addToSet operator is not the right thing to use here. This is by design since the "set" is of the "objects" in the array, and if you give a different combination of values in the keys in any way then this is a "new" object and is added.

So the correct way to handle this is with "two" operations:

1. Attempt to find the item where it does exist in the array by key and then update it with $set
2. Attempt to $push the item to the array if the key does not exist.

Clearly you don't want to be writing and waiting for a response from the database for multiple operations, so instead you use the bulkWrite() method to send both at once: