I've run across a problem that I have no idea how to fix, and unfortunately I know close to nothing about XHTML and PHP above the common sense level. I also don't know how to even begin to search for support.
My page is "not XHTML1.0 Transitional" valid. I'd like to fix that, but the following is my primary concern: The manifestation of the invalid XHTML, as best as I can guess, is the seemingly random number of "<"s at the beginning of my posts. I have checked in WP a million times, and I definitely didn't type those. Additionally, sometimes up to a paragraph is cut out from the beginning of each of my posts.
If someone could help me or even just give me some terms to search for other help with, I would be very grateful.
I have had this problem since the first minutes of my install, before I changed anything about the template or index.php file.
In the validator