问题
I have MAMP 1.9 on MAC OSX 10.8.2 using PHP 5.3 I installed MongoDB and the PHP extension mongo.so and added it to my php.ini.
I can run the MongoDB on the console and my phpinfo says MongoDB support is enabled but I cannot run the following PHP script.
<?php $connection = new MongoClient(); ?>
PHP comes up with a fatal error:
Class 'MongoClient' not found
Something seems to be wrong with the autoload configuration of my MAMP (or the extension installation).
回答1:
As Sammaye mentioned in the comments above, it looks like you're simply running an older version of the driver. You can obtain the current version by either dumping Mongo::VERSION or the returned value from phpversion('mongo'). Instructions for installing/upgrading the drive via PECL are also documented; however, we no longer have pre-compiled versions available on GitHub (GitHub will soon be removing repository downloads, although we've recently begun publishing the Windows builds to S3).
回答2:
I had the same issue because I was changing wrong php.ini file. So I ran the below command
echo phpversion('mongo');
and took Loaded Configuration File which was /Applications/MAMP/bin/php/php5.4.4/conf/php.ini and changed it.
Restarted Apache and it worked.yay!!!
来源：https://stackoverflow.com/questions/14002074/autoload-configuration-doesnt-load-mongodb-classes