How to add a title to a message?

Question

PHP

Made sending messages by this method. There are N pages with the same form. How to get and include in the message the title of the page from which the message is being sent? As an option, a hidden input, but I don’t really like this option.
https://scotch.io/tutorials/submitting-ajax-forms-...

Answer 1

https://developer.mozilla.org/en-US/docs/Web/API/d...javascript.ru/window-location
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Answer 2

hidden input via AJAX?!

Answer 3

<? echo '<script>document.title</script>'; ?>