Edited: Bad answer removed. Here is the working code: function custom_blogname_rss($val, $show) { if( ‘name’ == $show ) $out=”Custom Blog Name”; else $out = $val; return $out; } add_filter(‘bloginfo_rss’,’custom_blogname_rss’, 10, 2); Don’t forget to change Custom Blog Name to something useful. Put that code into a plugin.
wpmu_welcome_user_notification is a filter, but you can execute your action there, too. Take care not to turn off notification mails accidentally; see the source.
The short answer is no, it is not possible. When you deactivate your plugin, it’s deactivated so doesn’t run your admin_notices action when the admin screen is refreshed. You can confirm it for yourself by using the action in a slightly different way. In your deactivation function include the following line: set_transient(‘my_deactivation_transient’, ‘My plugin is … Read more
Let me start by saying that the init action is called when WordPress is loaded, before the tests are run. So it you are having your plugin/theme loaded with WordPress (by hooking into muplugins_loaded, for example), the register_my_type() method should be getting called, if your constructor is being called before init. (If you aren’t loading … Read more
I just tested the ‘robots_txt’ filter on a single installation to modify the output of the virtual /robots.txt that WordPress displays and it worked fine for me: add_filter(‘robots_txt’, ‘wpse_248124_robots_txt’, 10, 2); function wpse_248124_robots_txt($output, $public) { return ‘YOUR DESIRED OUTPUT’; } What is really happening when you try to reach /robots.txt? Does it display the default … Read more
You can use user_register add_action(‘user_register’, ‘wpse42506_user_register’, 10, 3); function wpse42506_user_register( $user_ID ) { // do stuff here } If you want to just use the user information, you can use get_userdata http://codex.wordpress.org/Function_Reference/get_userdata If you need more control, you can initiate a new WP_User http://codex.wordpress.org/Class_Reference/WP_User
You can hook into the action ‘deactivate_plugin’ to get the plugin’s base name and (as second parameter) if it was deactivated network wide. See wp-admin/includes/plugin.php function deactivate_plugins(). There seems to be no hook for plugin deletion. Sample logging code: add_action( ‘activated_plugin’, ‘t5_plugin_logger’, 10, 2 ); add_action( ‘deactivated_plugin’, ‘t5_plugin_logger’, 10, 2 ); /** * Log plugin … Read more
There is no hook to change the HTML of the input (only the enter_title_here filter to change the placeholder text). You could pull this off easily with jQuery, though. Try this in your functionality plugin or theme’s functions.php file: // Add to the new post screen for any post type add_action( ‘admin_footer-post-new.php’, ‘wpse_add_required_attr_to_title_field’ ); // … Read more
You cannot check if an action will be called before that happens. Even if there were already callbacks attached to the action there would be no guarantee the matching do_action() will be used. In your case, test with is_plugin_active(): if ( is_plugin_active( ‘wordpress-seo/wp-seo.php’ ) ) { // do something } As @Barry Carlyon mentions in … Read more
Modify your form to include: <form action=”<?php echo admin_url(‘admin-post.php’); ?>” method=”post”> <input type=”hidden” name=”action” value=”volunteer”> … </form> and add an action to run your function: add_action( ‘admin_post_volunteer’, ‘send_contact_to_civicrm’ ); add_action( ‘admin_post_nopriv_volunteer’, ‘send_contact_to_civicrm’ ); function send_contact_to_civicrm() { // stuff here }