I've been using PHP 4 on the hosting my WordPress blog is on for ages. I switched to PHP 5 earlier to take advantage of the DOM functions on a plugin I wrote.
I wrote the plugin, it all works etc., but now I can't login to the backend!
If I switch back to PHP 4 (I can do it via my hosts cPanel), I can login fine (although the plugin breaks).
When I try and login, I just get taken back to the login form, with no error. If I try and recover my password, I get an error that says to enter my username or email address (I did enter my username correctly).
Does anyone know what's going on?