Something funky is happening

Alright, so I was messing around in the functions.php file, trying to do some things, which cause me to get this error:

Parse error: syntax error, unexpected ‘{‘ in /home/content/s/a/m/samhancock24/html/teenagedmarketer/wp-content/themes/df_marine/functions.php on line 13

no matter what page i go to on my blog i get that error.

So I erased everything that I did, and i still get that error.

It says the error is on line 13, but there arent even 13 lines in the file. This is everything that is currently in that file and I still get the error:

<?php

if ( function_exists(‘register_sidebars’) )
register_sidebar();

?>

Somebody please help