private function decodeSearchQuery($q)
{
$words = preg_split('|[\\r\\n\\t ]+|', trim($q));
$words = array_map(function ($word) {
return mb_strtolower($word);
}, $words);
$words = array_filter($words, function ($word) {
return strlen($word) >= 2;
});
return ['valid' => count($words) > 0, 'in_q' => $q, 'use_q' => implode(' ', $words), 'sanitized_q' => strip_tags($q), 'words' => $words];
}