DB Access layer & deleting rows WordPress uses the wpdb class to manage access to the database layer using the global $wpdb. The class provides a method named delete() to delete rows from tables: $wpdb->delete( $table, $where, $where_format = null ); Multisite tables & activation keys WordPress has some MU specific tables, where one is … Read more
This can be somewhat tedious, but hopefully this helps. The less that changes from one environment to the next, the less painful this process will be. Particularly, if the domain, site id, file paths remain the same, the less painful this process will be. This post assumes some knowledge of database management. It is not … Read more
You can use spaces in usernames, no problem. Several users on wordpress.org have spaces in their usernames. Strict mode only allows these characters: a-z0-9<space>_.\-@ However WP doesn’t default to strict mode. Now, multisite has different restrictions, and it may strip spaces there. This is because usernames are used to create independent blogs and such on … Read more
WordPress Multisite can handle different domains by default – but NOT with alias domains. The settings of each site store the domain. On a default install there is a subdomain or folder-structure. But you can add a single domain. Screenshots For example, the first two sites are with the same domain (default from install) and … Read more
you might consider using if(get_post_mime_type($id) == ‘application/pdf’){ … } to check for pdf files. http://codex.wordpress.org/Function_Reference/get_post_mime_type You might also take a look at the code behind the wp_delete_attachment() function and you can hook into it with the delete attachment action. To remove the files you can use unlink() http://php.net/manual/en/function.unlink.php
Your callback function should run when your plugin is network activated or activated for a single site. Either way, it should be working. However, if you intend for the code contained within your callback to be ran for each blog in your network, then be aware that this will not happen out of the box, … Read more
You can use wpmu_validate_user_signup filter to remove the error and then define WP_IMPORTING just to skip the email_exist() check in wp_insert_user() function: add_filter(‘wpmu_validate_user_signup’, ‘skip_email_exist’); function skip_email_exist($result){ if(isset($result[‘errors’]->errors[‘user_email’]) && ($key = array_search(__(‘Sorry, that email address is already used!’), $result[‘errors’]->errors[‘user_email’])) !== false) { unset($result[‘errors’]->errors[‘user_email’][$key]); if (empty($result[‘errors’]->errors[‘user_email’])) unset($result[‘errors’]->errors[‘user_email’]); } define( ‘WP_IMPORTING’, ‘SKIP_EMAIL_EXIST’ ); return $result; } UPDATE: for … Read more
There’s a wpmu_options action that lets you append more HTML on the Network Settings page. If you want to add your own sub-menu/page to the Settings parent menu: add_action(‘network_admin_menu’, ‘add_my_netw_settings_page’); function add_my_netw_settings_page() { add_submenu_page( ‘settings.php’, ‘Co za asy’, ‘Co za asy’, ‘manage_network_options’, ‘my-netw-settings’, ‘your_form’ ); } function your_form(){ $options = get_site_option(‘your_plugin’); ?> <form action=”<?php echo … Read more
As explained in the description of the Network Admin Users screen, in a network install (multisite mode) users are added on a global basis to the entire network, then assigned to specific sites Normal administrators are not permitted to modify these global profiles, since their privileges extend only to their given site. This task is … Read more
Determine your Multisite Blog ID. I will use 99 as an example Go into the database Go to this table: wp_##_options (wp_99_options) — you will have a table for each blog Find the record where option_name = wp_user_roles Change the text wp_user_roles to wp_##_user_roles (“wp_99_user_roles”) The table you are editing will have option_id, blog_id, option_name, … Read more