How to remove duplicates?

Question

PHP

There is such a code, it displays the latest tags from the site's articles.

$result = $mysqli->query("SELECT * FROM tags LIMIT 5");
            
              while($row = $result->fetch_array()) {
              
                $pole = explode(',', $row['name']);
                $i = 0;
     
              foreach($pole as $word){
          
              $word = trim($word);
          
              if($word){
                echo "<a href=\"#\">" . $word . "</a>";
              $i++;
              }
               }
                      }

The only question is how to remove duplicates when outputting? Thanks in advance

Answer 1

php.net/manual/en/function.array-unique.php
$pole=array_unique($pole);

Answer 2

distinct dig