protected function Highlight::flattenKeysArray in Search API 8

Extracts the positive keywords from a keys array.

Parameters

array $keys: A search keys array, as specified by \Drupal\search_api\ParseMode\ParseModeInterface::parseInput().

Return value

string[] An array of all unique positive keywords contained in the keys array.

1 call to Highlight::flattenKeysArray()

Highlight::getKeywords in src/Plugin/search_api/processor/Highlight.php

Extracts the positive keywords used in a search query.

File

src/Plugin/search_api/processor/Highlight.php, line 421

Class

Highlight

Adds a highlighted excerpt to results and highlights returned fields.

Namespace

Drupal\search_api\Plugin\search_api\processor

Code

protected function flattenKeysArray(array $keys) {
  if (!empty($keys['#negation'])) {
    return [];
  }
  $keywords = [];
  foreach ($keys as $i => $key) {
    if (!Element::child($i)) {
      continue;
    }
    if (is_array($key)) {
      $keywords += $this
        ->flattenKeysArray($key);
    }
    else {
      $keywords[$key] = $key;
    }
  }
  return $keywords;
}