Compare values using strpos – PHP

I am trying to return the user_id if value matches with any comma separated value, I am using strpos but I don’t why is it not working with 3rd case:

To Compare: (This value is stored in $myArray variable)

Array
(
    [0] => cloud
    [1] => ai
    [2] => test
)

Compare with: (This value is stored in $array_meta_values variable)

Array
(
    [0] => Array
        (
            [tags] => cloud,ai
            [user_id] => 1
        )

    [1] => Array
        (
            [tags] => cloud,ai,test
            [user_id] => 108
        )

    [2] => Array
        (
            [tags] => storage,backup,ai
            [user_id] => 101
        )

)



function searchForId($meta_value, $array)
{

    foreach ($array as $key => $val) {
        if (strpos($val['tags'], $meta_value)) {
            return $val['user_id'];
        }
    }
}

foreach ($myArray as $usertags) {
        $userids[] = searchForId($usertags, $array_meta_values);
    }
print_r($userids);

Getting this Output:

Array
(
    [1] => 1
    [2] => 108
)

It was supposed to add 101 as third element in output array but don’t know why it is not working.

Any help appreciated.