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MongoDB PHP using $in with array

Posted by: admin July 12, 2020 Leave a comment


I’m using MongoDB and PHP and trying to do a $in based on a generated array.

When I specify the same array manually, it works, but when I build it, it return any results with the same data.

There’s what I have:

$settings = array();
foreach($items as $item) {
   $settings[] = $item['id'];

//Settings is the same as this
$setting2 = array(1,2,3,4,5,6,7,8);

//This returns no results
$cursor = $collection->find(array('status' => 0, 'sid' => array('$in' => $settings)));

//This does return results
$cursor = $collection->find(array('status' => 0, 'sid' => array('$in' => $setting2)));

I’ve checked using


And the items in the array are the same.

Any ideas what I’m doing wrong?


How to&Answers:

It’s likely that the data types of the numbers are not the same. Try using var_dump() on the built array, and the specified array. You’ll probably see one has them as numbers in a string, and the other as simple integers.