Phalcon Mongo Class not found error - php

Question

I attempting to setup Phalcon PHP using a Mongo database connection. I have configured my bootstrap (index.php) file using the following:
// Mongo database connection
$di->set('mongo', function(){
$mongo = new Mongo();
return $mongo->selectDb("phalcon");
}, true);
// Collection Manager
$di->set('collectionManager', function(){
return new \Phalcon\Mvc\Collection\Manager();
});
Whenever I attempt execute an insert fucntion in using this connection, I receive a 500 Internal server error. Now, I have checked my apache server error logs and it states "PHP Fatal error: Class 'Mongo' not found in /var/www/phalcon-mongo/public/index.php on line 17".
I don't know why this request is not processing, according to the documentation given from Phalcon, the connection to mongo DB is setup up as I have displayed above.
If anyone has any advice, please let me know.

Answer 1

i think it's because your installation of Mongo is not valid.
try printing phpinfo() and check if mongo is loaded at all, if not - install it, add to ini files (if you use cli, don't forget to add to cli ini too) and reach the moment, when mongo is fully loaded.
try mongo w/o phalcon. any simple connection/insertation. you can see here: Fatal Error - 'Mongo' class not found that there are problems with apache module version for some people. Try reinstalling different mongo version.
if you can print this out:
echo Phalcon\Version::get();
there should be no problems with phalcon instalation
to validate mongo installation, try any of examples from php.net:
http://www.php.net/manual/en/mongo.tutorial.php
if both installations are valid, then there are problems with your custom code, but before doing anything you have to validate both installations.