Set the parent_slug property to null, example; add_submenu_page( null // -> Set to null – will hide menu link , ‘Page Title’ // -> Page Title , ‘Menu Title’ // -> Title that would otherwise appear in the menu , ‘administrator’ // -> Capability level , ‘menu_handle’ // -> Still accessible via admin.php?page=menu_handle , ‘page_callback’ … Read more
get_posts passes the heavy lifting off to WP_Query and if you look at the source of that class you can see that there are only a limited number of options with that fields argument. There are only three options in that switch— ids, id=>parent, and the default case, everything. You can use the posts_fields filter … Read more
The answers here are overthought and too complex. Why deactivating the plugin instead of preventing activation? Something as simple as calling die(‘your error message here) upon activation will do the job. function activate($networkwide) { if (is_multisite() && $networkwide) die(‘This plugin can\’t be activated networkwide’); } register_activation_hook(‘your-plugin/index.php’,’activate’); Then when you try to activate in the panel, … Read more
admin_url() gets you the correct administration page URL (and network_admin_url() to get a network administration page URL) Optionally, you can use add_query_arg() to append arguments to an URL, using an associative array: $page=”edit_record_page”; $rec_id = 1; $record_url = add_query_arg(compact(‘page’, ‘rec_id’), admin_url(‘admin.php’));
These two functions accomplish two different things. wp_footer() is a hook used in your footer.php template file to ensure that the right code is inserted (from the core/plugins/etc) into the right place. get_footer() is used in your other template files to call for the code in your footer.php template file. So in simpler words wp_footer() … Read more
The filter is manage_{$screen->id}_columns, and $screen->id is edit-category, giving you manage_edit-category_columns. I found this by placing a var_dump() in get_column_headers(), which is called by print_column_headers(), which is called in wp-admin/edit-tags.php, the page where you edit the category items.
Today I run a test over my db to explore the speed difference between accessing a key from options, custom table & transients. I ran the test for 1000 times and following is the time taken to run 1000 get operations: Keep in mind that the options table is used for both options and transients … Read more
Use plugin_dir_url() to get the public URI for the directory where the calling PHP file is. <img src=”https://wordpress.stackexchange.com/questions/60230/<?php echo plugin_dir_url( __FILE__ ) .”images/facebook.png’; ?>”> If the PHP file is in a sub directory of your plugin you have to go up: <img src=”https://wordpress.stackexchange.com/questions/60230/<?php echo plugin_dir_url( dirname( __FILE__ ) ) .”images/facebook.png’; ?>”>
Hook in wp.media to add a new tab
You are perfectly right about the analysis of the issue, even if the terms you employ are a bit confusing. There is no such thing as “an instance of the image” : once you have inserted an image into a post, modifying the original image title or caption (via the Media menu for example) will … Read more