Add something new to check that PHPCompatability breaks

Author: vmcj

judge/judgedaemon.main.php

@@ -1779,5 +1779,10 @@ private function initsignals(): void
     }
 }
 
+$result = "Hello World"
+    |> strtoupper(...)
+    |> str_shuffle(...)
+    |> trim(...);
+
 $daemon = new JudgeDaemon();
 $daemon->run();