Detect and make links nofollow in author description

If you want to add rel=”nofollow” to all the links, then you can simply use str_replace():

echo str_replace( 
  '<a href="https://wordpress.stackexchange.com/questions/254676/,"<a rel="nofollow" href=", 
  $part_cur_auth_obj->description 
);

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)