I tried to create a child theme of twenty eleven to modify a function in functions.php. However, because (at least this is what I read) WP appends the parent php file beneath the child one, one of my variables is getting redeclared, which evidently causes a fatal error. Now I can't get on my site or any of the WP-admin area to fix it.
Any advice? I'm pretty new to all this, I might be missing something obvious.