Taking sum of “column” in MongoDB

Question

In MySQL, I would simply go \"SELECT sum(pts) FROM table\" to get the sum of the pts column on the table. However, I am converting this application to MongoDB and cannot fin

Answer 1

Try:
$m = new MongoClient();
$con = $m->selectDB("dbName")->selectCollection("collectionName");
$cond = array(
    array(
        '$group' => array(
            '_id' => null,
           'total' => array('$sum' => '$type'),
        ),
    )
);

$out = $con->aggregate($cond);
print_r($out);

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