How to remove duplicate values from an associative array based on a specific value?

Question

I have an array that looks just like that:

array(3) { [\"fk_article_id\"]=> string(1) \"4\" [\"first_name\"]=> string(6) \"Ulrike\" [\"last_name\"]=>         


        

Answer 1

I would use a foreach-loop to iterate over the arrays and save all arrays that dont have a duplicate _id to a new array.

$clean = array();
foreach ($arrays as $array) {
  if (!isset($clean[$array['fk_article_id']])
    $clean[$array['fk_article_id']] = $array;
}