getExplanation() public méthode

Returns explanation on how its score was computed.
public getExplanation ( ) : array
Résultat array explanations
 /**
  * Returns the explanation array for this document as returned from ElasticSearch.
  *
  * If this is a new document, or the query used to create it did not ask for
  * explanation, this function will return an empty array.
  *
  * @return array
  */
 public function explanation()
 {
     if ($this->_result) {
         return $this->_result->getExplanation();
     }
     return [];
 }
 protected function formatResult(Result $result, $showField, $showSource, $showId, $explain)
 {
     $source = $result->getSource();
     if ($showField) {
         $toString = isset($source[$showField]) ? $source[$showField] : '-';
     } else {
         $toString = reset($source);
     }
     $string = sprintf('[%0.2f] %s', $result->getScore(), var_export($toString, true));
     if ($showSource) {
         $string = sprintf('%s %s', $string, json_encode($source));
     }
     if ($showId) {
         $string = sprintf('{%s} %s', $result->getId(), $string);
     }
     if ($explain) {
         $string = sprintf('%s %s', $string, json_encode($result->getExplanation()));
     }
     return $string;
 }