Add some sql files for testing, improve compatibility

[laukstein]

@erhankilic, hi!
I find your github repo from https://dev.to/erhankilic/how-to-import-sql-file-with-php--1jbc

Erhan, you could add some .sql files for testing, see if your php passes it fine.

For example I think it wouldn't pass:

1. comment format /* this is a comment */
2. query that doesn't end on first ; for example:

CREATE TRIGGER modified BEFORE UPDATE ON `table` FOR EACH ROW IF (NEW.title <> OLD.title OR
  NEW.description <> OLD.description OR
  NEW.text <> OLD.text) THEN
  SET NEW.modified = NOW();
END IF;

[erhankilic]

@laukstein, hi!
I will add to todo list. Thanks.