WordPress function and string as variable?

Instead of

get_template_url()

user

get_template_directory_uri() for parent theme

and

get_stylesheet_directory_uri() for child theme or parent theme if not child theme present

NOTE: this will require a slash like so:

 $image_link_url = get_template_directory_uri() . '/images/placeholder_bg.png';

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