the following code produces the error in the title. I've tried to google it, but all I got were pages who got the same error (and not an explanation thereof). This isn't really a problem since it's actually working and cancelling the error out with the @ works out just fine. Though I'm still wondering why I haven't been able to execute array\_multisort just once without getting this error.

```
public function getMostRelevant(){

  list($occurrences, $keywords) = $this->occurr_keyw_array;

  array_multisort($occurrences, SORT_DESC, SORT_NUMERIC,
      $keywords);

  $return_array = array(
         array($occurrences[0], $keywords[0]),
         array($occurrences[1], $keywords[1]),
         array($occurrences[2], $keywords[2])
         );

  return $return_array;

 }

```