?>
--EXPECT--
filter: string.rot13
-bool(true)
+resource(5) of type (stream filter)
string(12) "Uryyb Gurer!"
filter: string.toupper
-bool(true)
+resource(7) of type (stream filter)
string(12) "HELLO THERE!"
filter: string.tolower
-bool(true)
+resource(9) of type (stream filter)
string(12) "hello there!"
filter: string.rot13
-bool(true)
+resource(11) of type (stream filter)
filter: string.toupper
-bool(true)
-string(12) "URYYB GURER!"
+resource(12) of type (stream filter)
+string(12) "URYYB GURER!"
\ No newline at end of file