Unique Array by Value - php

Question

$email_users[] = $row;
print_r($email_users);
Result:
Array (
[0] => Array (
[user_id] => 87436
[username] => Admin
[user_email] => email#online.us
[user_lang] => de
[allowed] => 1 )
[1] => Array (
[user_id] => 68013
[username] => Testuser
[user_email] => email2#online.us
[user_lang] => de
[allowed] => 1 )
[2] => Array (
[user_id] => 68013
[username] => Testuser
[user_email] => email2#online.us
[user_lang] => de
[allowed] => 1 )
)
As you can see, the user_id 68013 is double. I have to remove the double Array. The Result should look like this:
Array (
[0] => Array (
[user_id] => 87436
[username] => Admin
[user_email] => email#online.us
[user_lang] => de
[allowed] => 1 )
[1] => Array (
[user_id] => 68013
[username] => Testuser
[user_email] => email2#online.us
[user_lang] => de
[allowed] => 1 )
)
I read and tried several solutions I found on stack. For example:
How to get unique value in multidimensional array
$email_users[] = $row;
$user_ids = array();
foreach ($email_users as $h) {
$user_ids[] = $h['user_id'];
}
$email_users = array_unique($user_ids);
print_r($email_users);
But the print_r is only:
Array ( [0] => 87436 [1] => 68013 )
Thanks for your time.

Answer 1

You should get distinct value from your query. Use SELECT DISTINCT * FROM tablename and you will get Distinct value.
Or use $email_users= array_unique($email_users, SORT_REGULAR);