'默认3天'

config/app.php

@@ -110,7 +110,7 @@ return [
 
     'log' => env('APP_LOG', 'single'),
 
-    'log_max_files' => env('LOG_MAX_FILES', 5),
+    'log_max_files' => env('LOG_MAX_FILES', 3),
 
     /*
     |--------------------------------------------------------------------------