Tried to change functions php and my site disappeared

I wanted to make my theme accept widgets. I copied some code and added it to my website, per wordpress’s instructions. However, I got the following message:
Parse error: syntax error, unexpected ‘<‘ in /home4/mcp21/public_html/wp-content/themes/wpex-photo/functions.php on line 109

I removed the new code I had put in, and I continued to get this message. I tried to find the offending ‘<‘ but could not. Now, when you put in my website, https://www.pinkertonchiropractic.com you get the message:
Parse error: syntax error, unexpected ‘<‘ in /home4/mcp21/public_html/wp-content/themes/wpex-photo/functions.php on line 109

But when I try to go to my login, I get the same message! So I can’t even login and try to troubleshoot. What the hell!