rustnroses on "wp_config.php T_string error"

Accidentally uninstalled wordpress from the wrong site. Still have the database on my site and have restored the last good back up. Have checked the database through phpMyAdmin and confirmed the table structure which now all read as:

wp_f28erk_commentmeta
wp_f28erk_comments
wp_f28erk_links
...
etc.

From what I understand, this means my new table prefix is 'wp_f28erk_' and that needs to be changed in the wp_config.php file.

So, reinstalled WordPress (I'm using Dreamhost). Accessed files through FTP, and edited the line to read: $table_prefix = 'wp_f28erk_’;

That gave me the error: Parse error: syntax error, unexpected T_STRING in /home/rustnroses/testing.rustnroses.net/wp-config.php on line 69

I figured I must have screwed up somewhere, so pulled down the config sample file, changed the DB ident sections "NAME" "USER" etc. and the whole section around table name looks like this

/**#@-*/

/**
 * WordPress Database Table prefix.
 *
 * You can have multiple installations in one database if you give each a unique
 * prefix. Only numbers, letters, and underscores please!
 */
$table_prefix  = 'wp_f28erk_’;

/**

But I'm still getting the same error. Please help?

Thanks