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Editorial Team
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Editorial Team
Asked: June 14, 20262026-06-14T04:25:55+00:00 2026-06-14T04:25:55+00:00

I want to do a request which is in mysql like SELECT * FROM

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I want to do a request which is in mysql like SELECT * FROM '.$category.' <– the from table is random and its given over the POST. How do I do this in MongoDB?

I started like:

$db->$category->

$category = $_POST['category'];
$category = $liste[$category];

Can anyone please help me?
btw. :

Performance Problem:

Is it faster of any reason to do more then one collection in mongodb?
For example i put 10 collections with each 1 million in it or 1 with 10 million?

Kind Regards

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  1. Editorial Team
    Editorial Team
    2026-06-14T04:25:57+00:00Added an answer on June 14, 2026 at 4:25 am

    $db->selectCollection( $category )->find();

    That will give you all of the results from a certain collection as a MongoCursor object. Not sure what else you are looking for.

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