cleanup

backend-php/api.php

@@ -8,7 +8,7 @@ function db()
     return $pdo;
 };
 
-function findClosestDateSort($array, $targetDate)
+function findClosestDateSort(array $array, string $targetDate)
 {
     if (empty($array) || !preg_match('/^\d{1,2}-\d{1,2}-\d{2}$/', $targetDate)) {
         return null;