Array
(
[0] => Array
(
[user_id] => 49
[username] => gerben
)
[1] => Array
(
[user_id] => 7
[username] => christian
)
[2] => Array
(
[user_id] => 49
[username] => gerben
)
[3] => Array
(
[user_id] => 13
[username] => karin
)
[4] => Array
(
[user_id] => 8
[username] => michiel
)
[5] => Array
(
[user_id] => 33
[username] => nancy
)
[6] => Array
(
[user_id] => 35
[username] => stephan
)
[7] => Array
(
[user_id] => 48
[username] => test
)
[8] => Array
(
[user_id] => 16
[username] => willem
)
)
.. nu gaat array_unique niet werken omdat de keys gewoon oplopend zijn, hoe kan ik op inhoud controleren?