I would use the is_page_template() conditional: if ( is_page_template( ‘page-courses.php’ ) ) { // The current page uses your // custom page template; // do something } Edit You would use this conditional inside your filter callback: function wpse83525_filter_the_title( $title ) { if ( is_page_template( ‘page-courses.php’ ) ) { return ‘Custom Title’; } return $title; … Read more
It would be nice if WordPress had a standards based cache directory, but since it doesn’t I think the best option is to keep it in the plugin folder itself. Uploads are in my opinion for actual uploads and cache files are not really considered as such. I think it easier to manage , reduces … Read more
For full explanation of what’s happening see this post (this is for deactivating plug-ins, but the problem is the same). A brief explanation: Plug-ins are essentially activated by adding them to the array of active pug-ins stored in the database. When you activate the first plug-in, WordPress retrieves the array of all currently active plug-ins, … Read more
The Proper Network Activation meta-plugin was written precisely for cases like this.
What you need is in global $wp_meta_boxes indexed by get_current_screen()->id. Removing the screen options will also remove the metaboxes which you can do just before screen options are displayed using the ‘in_admin_header’ hook. So let’s assume you want to get rid of the “Send Trackbacks” screen option which you see in this screenshot: Drop the … Read more
For testing purposes you can use the log system (php_error.log): error_log(‘Plugin activated’, 0); // Check for DB table existance if(!$this->hasDBTable()){ error_log(‘Database not present’, 0); if($this->createCELabelsDBTables()){ error_log(‘Database was created.’, 0); } else { error_log(‘Error creating the CE Labels Plugin db tables!’, 0); } } else { error_log(‘Database OK’, 0); } To output error to the user … Read more
global $wpdb; $image_src = wp_upload_dir()[‘baseurl’] . “https://wordpress.stackexchange.com/” . _wp_relative_upload_path( $filename ); $query = “SELECT COUNT(*) FROM {$wpdb->posts} WHERE guid=’$image_src'”; $count = intval($wpdb->get_var($query)); You can use this at the top of your code. Then check the value of $count. If it’s 0, then you can continue adding the attachment
There is already a huge list built for you, which can be returned by wp_kses_allowed_html() based on context, and filtered via the wp_kses_allowed_html filter, also contextually. Creating that list should not be hard. However, “the whole range of HTML tags that might appear in an HTML email” should be pretty close to the range allowed … Read more
The question / answer you are referring to was Tips for using WordPress as a CMS. The screenshots posted in that answer were created using the register_meta_box_cb argument that is available to for custom post types. register_meta_box_cb must specify a callback function that contains the code for the meta box. To create the meta box … Read more
You can use the theme_page_templates filter to add templates to the dropdown list of page templates like this: function wpse255804_add_page_template ($templates) { $templates[‘my-custom-template.php’] = ‘My Template’; return $templates; } add_filter (‘theme_page_templates’, ‘wpse255804_add_page_template’); Now WP will be searching for my-custom-template.php in the theme directory, so you will have to redirect that to your plugin directory by … Read more