public static function SuggestionHelper::ngrams in Autocomplete Search Suggestions 8
Same name and namespace in other branches
- 8.2 src/SuggestionHelper.php \Drupal\suggestion\SuggestionHelper::ngrams()
- 3.0.x src/SuggestionHelper.php \Drupal\suggestion\SuggestionHelper::ngrams()
Build a set of ngrams from the set of atoms.
Parameters
array $atoms: An array of strings.
Return value
array An array of ngrams keys.
1 call to SuggestionHelper::ngrams()
- SuggestionHelper::insert in src/
SuggestionHelper.php - Add a suggestion.
File
- src/
SuggestionHelper.php, line 205
Class
- SuggestionHelper
- Provides helper methods for suggestions.
Namespace
Drupal\suggestionCode
public static function ngrams(array $atoms = []) {
$max = self::getConfig('atoms_max');
$min = self::getConfig('atoms_min');
$ngrams = [];
$count = count($atoms) - $min;
for ($i = 0; $i <= $count; $i++) {
for ($j = $min; $j <= $max; $j++) {
$ngrams[implode(' ', array_slice($atoms, $i, $j))] = 1;
}
}
$atoms = array_reverse($atoms);
for ($i = 0; $i <= $count; $i++) {
for ($j = $min; $j <= $max; $j++) {
$ngrams[implode(' ', array_slice($atoms, $i, $j))] = 1;
}
}
return $ngrams;
}