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Home/ Questions/Q 7675007
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Editorial Team
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Editorial Team
Asked: May 31, 20262026-05-31T16:51:51+00:00 2026-05-31T16:51:51+00:00

$question_list = $this->collection->find(array(‘_id’=>$question_id)); collection has been defined as a collection,but the list is null,I’m

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$question_list = $this->collection->find(array(‘_id’=>$question_id));

collection has been defined as a collection,but the list is null,I’m sure the question_id is exist in the collection ,it is the _id

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  1. Editorial Team
    Editorial Team
    2026-05-31T16:51:53+00:00Added an answer on May 31, 2026 at 4:51 pm
    $question_list = $this->collection->find(array('_id'=> new MongoId($question_id)));
    

    I recently started to use numeric primary keys in my projects. It’s much easier to handle in combination with PHP / JS.

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