This was done to restrict the effect of those filters to this one query between both calls. There are probably other instances of WP_Query during page load, and you don’t want to change their results. Imagine what happens when you do not remove the filter: All later new WP_Query(); calls would be restricted to a … Read more
This is a serialized value, so you should run it through maybe_unserialize() or just unserialize() before you edit it. When you work in plugins or themes, always use the API: update_option() and get_option() for example. These functions will un/serialize the values for you, so you don’t have to worry about the database. See also: Settings … Read more
Use get_file_data( $file, $headers ): $file_data = get_file_data( __FILE__, array ( ‘Plugin Name’ ) ); echo “the name is ” . $file_data[0]; Make sure the first parameter points to an existing file. It will find all lines that are formatted like regular plugins headers or the headers of a style.css. In my plugin T5 Opera … Read more
If it is a custom theme for your site then there would no great speed or security improvements by moving functions. On the other hand if you want to distribute the theme then I recommend having only the minimum php in the page templates files and having the rest of the functions organized in different … Read more
Try adding a condition to your filtering function that checks your post type against get_post_type. if ( ‘book’ == get_post_type() ) If you wish to apply this filter to pages as well, try is_singular() and include your custom post type(s) as an argument. is_singular(‘book’); This will return true if any of the following conditions are … Read more
These two are pretty close, but relate to slightly different stages of the process. In purely technical terms WordPress has two different APIs — Options API and Settings API. Options API deals with saving and retrieving options from database. So its scope and scope of “options” in terminology is that of purely storage. Settings API … Read more
This is the filter: “plugin_install_action_links”. You can find this in /wp-admin/includes/class-wp-plugin-install-list-table.php (currently) at line 434: $action_links = apply_filters( ‘plugin_install_action_links’, $action_links, $plugin ); Use it like: add_filter( ‘plugin_install_action_links’, ‘my_custom_links’, 10, 2 ); function my_custom_links( $action_links, $plugin ){ $action_links[] = ‘<a href=””>……</a>’; return $action_links; }
I’ve created a metabox once with color picker. You need to include color picker style and script in your admin_enqueue_scripts hook, and then initialize it with $(‘.color-picker’).wpColorPicker(); From my gist: <?php add_action( ‘admin_enqueue_scripts’, ‘mytheme_backend_scripts’); if ( ! function_exists( ‘mytheme_backend_scripts’ ) ){ function mytheme_backend_scripts($hook) { wp_enqueue_media(); wp_enqueue_style( ‘wp-color-picker’); wp_enqueue_script( ‘wp-color-picker’); } } add_action( ‘add_meta_boxes’, ‘mytheme_add_meta_box’ ); … Read more
This approach should work for you: <?php /** * Plugin Name: Rewrite Shortcode **/ add_shortcode( ‘myplugin’, ‘mp_shortcode’ ); function mp_shortcode(){ return ‘<p>Filter: ‘ . get_query_var( ‘filter’ ) . ‘</p>’; } add_action( ‘init’, ‘mp_rewrite’ ); function mp_rewrite(){ $post_id = 2; add_rewrite_rule( ‘myplugin/([^/]+)/?$’, ‘index.php?p=’ . $post_id . ‘&filter=$matches[1]’, ‘top’ ); add_rewrite_tag( ‘%filter%’, ‘([^/]+)’ ); } ?> I … Read more
At first glance it works and I cannot see any implications but maybe you are aware of some? You say that you are not getting errors, which I would have expected but it looks as though WordPress uses require_once() so you are probably safe: 39 /** WordPress Plugin Administration API */ 40 require_once(ABSPATH . ‘wp-admin/includes/plugin.php’); … Read more