Is there a way to test MongoDB connection in PHP?

Question

Context

I have a configuration file in which I precise the MongoDB connection string. I want to test my MongoDB connection, to precise to the devs using my code that their configuration is bad if it's the case.

I use the MongoDB driver.

I did not find anything about tests of the Mongo connection.

Problem

I do:

<?php
$configuration = parse_ini_file("../configs/database.ini");
$mongo = new MongoDB\Client($configuration['resources.mongo.dsn']);
$db = $mongo->stats;

But the only errors thrown are those about bad format of the MongoDB connection string. For example:

• with test_bad_string, a MongoDB\Driver\Exception\InvalidArgumentException is thrown

• with mongodb://127.0.0.1:270 (default port for my MongoDB is 27017), I don't see any errors

Question

Is there a way to test in PHP the connection to a MongoDB database?

Answer 1

Ok, I found a way to test it!

<?php
$mongo = new MongoDB\Client('mongodb://my_server_does_not_exist_here:27017');
$dbs = $mongo->listDatabases();

If the connection fails, listDatabases throws a MongoDB\Driver\Exception\ConnectionTimeoutException. You just need to set a try/catch around the listDatabases.