How to remove duplicate keys in array

I have an array called $myarray -

id position status name

4    23        4   john

3    45        3   mike

4    23        0   john

7    25        2   sam

etc.

i need to filter array by "id" and when similar records found i need to evaluate by "status"key to remove number tha开发者_开发问答t's 0 or less than "status" in matching row. Is there some way to do it fast like some function?

---

You could use array_multisort(..) to sort by id ASC then status DESC. Then you could walk through the sorted array and delete rows where the id has been seen before.

---

This removes all occurences of status=0. If u want to keep these rows, when there is no other matching id, remove the $value['status'] > 0 &&

$cleanarray = array();
foreach ($myarray as $value) {
    if (
        $value['status'] > 0 && (
            !array_key_exists($value['id'], $cleanarray) ||
            $value['status'] > $cleanarray[$value['id']]['status']
        )
    ) $new_cleanarray[$value['id']] = $value;
}

---

array_filter()

This might be of your use