Extract values from one row string for foreach

I extracted two inputed usernames from a text string with @ mention tag.

Now I want to put them in foreach loop so I can use my doctrine instance to search for their user name.

My code:

function find(TextEntity $text)
{
    preg_match_all('/@([a-zA-Z0-9]+)/', $text->getText(), $usernames);

    $extractedText = implode('", "', $usernames[1]);
}

The result I get:

“john”, “jane”

I can’t find a way to extract them so I can use one by one in foreach loop.

So my try is: (update: working solution)

$usernames = $usernames[1];

$query = $this->em->getRepository(User::class)
        ->createQueryBuilder('m')
        ->select('m')
        ->where('m.email IN (:emails)')
        ->setParameter('emails', $usernames)
        ->getQuery()
        ->getResult();

Answer

As usernames[1] is already an array you can iterate over it:

preg_match_all('/@([a-zA-Z0-9]+)/', $text->getText(), $usernames);

$usernames = $usernames[1];

And as doctrine supports where in () clause in findBy you can use this array without foreach:

$findUsers = $this->em->getRepository(User::class)->findBy([
    'username' => $usernames
]);

print_r(findUsers);

You can modify this code as needed.