style

models/UserIcon.php

@@ -34,6 +34,7 @@
 use function sprintf;
 use function substr;
 use function unlink;
+use function vsprintf;
 
 use const PNG_ALL_FILTERS;
 

models/api/v3/PostBattleForm.php

@@ -52,23 +52,19 @@
 use yii\base\InvalidConfigException;
 use yii\base\Model;
 use yii\db\ActiveRecord;
-use yii\helpers\FileHelper;
 use yii\helpers\Json;
 use yii\web\UploadedFile;
 
 use function array_keys;
 use function asort;
 use function base64_encode;
 use function count;
-use function dirname;
 use function file_get_contents;
-use function file_put_contents;
 use function floor;
 use function hash_hmac;
 use function in_array;
 use function is_array;
 use function is_int;
-use function is_object;
 use function is_string;
 use function json_decode;
 use function rtrim;