In your example code, $user_id will be the error object. You can test if is_wp_error and return the error string via get_error_message: $user_id = wp_create_user( $user_name, $random_password, $user_email ); if ( is_wp_error( $user_id ) ) return $user_id->get_error_message();
A theme has near complete control over the appearance of a site, including the widgets. And any plugin could load a stylesheet that overrides elements of your, intentionally or not. There are guidelines to encourage certain standards of code quality, which are enforced to some degree if the plugin/theme is hosted on the WordPress.org plugin … Read more
PHP allows you to send header information using the header() command. More specific to WordPress is the send_headers action hook. Also: always remember that you have to send all your headers before any output is sent to the screen.
The best practice is to actually enqueue from the bundled version since it has a handle, this avoids conflicts. If 2 scripts are enqueued using the same handle, jquery-ui-core for example (default WP one) then only 1 script is loaded. If 2 scripts are enqueued using different names then they will both be loaded. This … Read more
The link you provided has the answer, given by Otto as a comment: Short answer is that you can’t. Not only using add_menu_page like that. Those icons WordPress uses are added as background images via CSS, not using the icon_url method that is provided with add_menu_page. As you said the syntax is: syntax: add_menu_page( $page_title*, … Read more
… using this code in index.php the result is “null” Since the code referenced is var_dump($input_examples); that means that $input_examples hasn’t been set or it out of scope where you are trying to use it. You will need to add … $input_examples = get_option(‘price_display_options’); // maybe not the right key … to your code before … Read more
Sure it is possible there is a great chapter about that in the Professional WordPress Plugin Development book (http://www.amazon.de/Professional-WordPress-Plugin-Development-Williams/dp/0470916222). I’ve already got a system for my premium plugins like that. Essentially you have to hook into the WordPress API requests and root them to your own API Here is an example for premium plugins https://gist.github.com/Horttcore/5197032
However, the recommended mechanism for injecting the styles is really not cool. All guides I’ve read online and from WordPress recommend they be added inline to the Head of the document. That’s how HTML works, no fault of WP’s. Dynamic stylesheets have always been a challenge since CSS is not dynamic language by nature. There … Read more
If you check out the source of the /wp-admin/admin-header.php page you find the following actions: Inside div#wpbody: in_admin_header, Inside div.wpbody-content: network_admin_notices user_admin_notices admin_notices all_admin_notices I’m not sure what you mean by the right location, but I guess the all_admin_notices action would be the most suitable one for you?
I needed to do the following: set_post_thumbnail( $new_reseller_id, $attach_id );