通过保持当前的主题函数来尝试这一点。PHP更改角色而不是作者

function add_theme_caps() {
    // gets the author role
    $role = get_role( \'author\' );

    // This only works, because it accesses the class instance.
    // would allow the author to edit others\' posts for current theme only
    $role->add_cap( \'edit_posts\' ); 
}
add_action( \'admin_init\', \'add_theme_caps\');