When executing the following PHP code:
$m = new MongoClient("mongodb://localhost:27017");
I get the following error:
Fatal error: Class 'MongoClient' not found in (...)
MongoDB extension seems properly installed (I copied
php_mongodb.dll to ext folder and updated
PHP seems to confirm that the extension is running properly as the following code confirms it is loaded:
echo extension_loaded("mongodb") ? "loaded\n" : "not loaded\n";
phpinfo() shows that mongodb extension has been loaded.
UPDATE: my problem is still not solved.
phpinfo() clearly shows that the driver is loaded:
But I am still receiving the same fatal error.
And since you have the
mongodb extension installed, and not the
mongo one, this is why you are getting the error
Fatal error: Class 'MongoClient' not found
On MongoDB PHP driver github repo, the release note about the version 1.0.0, is suggesting developers to use
MongoDB\Driver\Manager instead of
Changes from our legacy mongo extension
Most significantly, the legacy driver's MongoClient, MongoDB, and MongoCollection classes have been obsoleted by the MongoDB\Driver\Manager class, which is the new gateway for connecting and executing queries, commands, and write operations.
So, here is the replacement class documentation and the snippet of code that should replace yours :
$m = new MongoDB\Driver\Manager("mongodb://localhost:27017");
As the documentation is prompting it, the class is deprecated.
Warning This extension that defines this class is deprecated. Instead, the MongoDB extension should be used. Alternatives to this class include:
From what I read on their github repository release history, the class you are trying to use have been obsoleted since the version of
mongodb 1.0.0, so, on the version
1.6.0 you are, this class is not even part of the
That is confirmed by this issue on their github
derickr commented on Apr 16
MongoClient is a class from the old legacy driver and is not supposed to be available in this one. The new driver has \MongoDB\Driver\Manager, and, the accompanying library has \MongoDB\Client.
You either need to install the old legacy extension (pecl install mongo) and use PHP 5.x, or update your code to use this new driver's classes as the old driver is not available for PHP 7. There is an upgrade guide at http://mongodb.github.io/mongo-php-library/upgrade-guide/
Another way, as suggested by the MongoDB member quoted here above is to use this pecl extension: https://pecl.php.net/package/mongo instead of https://pecl.php.net/package/mongodb but please also notice the warning there stating:
This package has been superseded, but is still maintained for bugs and security fixes.
MongoDB(mongo-php-library) and MongoClient(ext-mongo) are different extensions. MongoClient extension is deprecated. If you want to use MongoClient(ext-mongo) related classes, use a wrapper like this one;
Adapter to provide ext-mongo interface on top of mongo-php-library
You don't need to change anything on your project. Just install and include it with composer.