Only variables should be assigned by reference in wordpress
Подробные видеоинструкции Wordpress на тему: "Only variables should be assigned by reference in wordpress":
Wordpress: PHP Strict Standards: Only variables should be assigned by reference
Strict Standards: Only variables should be assigned by reference in mod_jb_free_dropdown.php
Wordpress: get_page() - Only variables can be passed by reference (2 Solutions!!)
Wordpress: user_id error: Only variables should be passed by reference
