--TEST-- ob_start(): Ensure unerasable buffer cannot be accessed or flushed by ob_get_flush(). --FILE-- --EXPECTF-- [callback:1]This call will obtain the content, but will not flush the buffer. Notice: ob_get_flush(): failed to send buffer of callback (0) in %s on line 11 Notice: ob_get_flush(): failed to delete buffer of callback (0) in %s on line 11 string(65) "This call will obtain the content, but will not flush the buffer."