tables( 'ms_global' ) as $table => $prefixed_table ) $wpdb->$table = $prefixed_table; /** * Check for an existing network. * * @since 3.0.0 * @return Whether a network exists. */ function network_domain_check() { global $wpdb; if ( $wpdb->get_var( "SHOW TABLES LIKE '$wpdb->site'" ) ) return $wpdb->get_var( "SELECT domain FROM $wpdb->site ORDER BY id ASC LIMIT 1" ); return false; } /** * Allow subdomain install * * @since 3.0.0 * @return bool Whether subdomain install is allowed */ function allow_subdomain_install() { $domain = preg_replace( '|https?://([^/]+)|', '$1', get_option( 'siteurl' ) ); if( false !== strpos( $domain, '/' ) || 'localhost' == $domain || preg_match( '|[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+|', $domain ) ) return false; return true; } /** * Allow subdirectory install * * @since 3.0.0 * @return bool Whether subdirectory install is allowed */ function allow_subdirectory_install() { global $wpdb; if ( apply_filters( 'allow_subdirectory_install', false ) ) return true; if ( defined( 'ALLOW_SUBDIRECTORY_INSTALL' ) && ALLOW_SUBDIRECTORY_INSTALL ) return true; $post = $wpdb->get_row( "SELECT ID FROM $wpdb->posts WHERE post_date < DATE_SUB(NOW(), INTERVAL 1 MONTH) AND post_status = 'publish'" ); if ( empty( $post ) ) return true; return false; } /** * Get base domain of network. * * @since 3.0.0 * @return string Base domain. */ function get_clean_basedomain() { if ( $existing_domain = network_domain_check() ) return $existing_domain; $domain = preg_replace( '|https?://|', '', get_option( 'siteurl' ) ); if ( $slash = strpos( $domain, '/' ) ) $domain = substr( $domain, 0, $slash ); return $domain; } if ( ! network_domain_check() && ( ! defined( 'WP_ALLOW_MULTISITE' ) || ! WP_ALLOW_MULTISITE ) ) wp_die( __( 'You must define the WP_ALLOW_MULTISITE constant as true in your wp-config.php file to allow creation of a Network.' ) ); if ( is_network_admin() ) { $title = __( 'Network Setup' ); $parent_file = 'settings.php'; } else { $title = __( 'Create a Network of WordPress Sites' ); $parent_file = 'tools.php'; } add_contextual_help($current_screen, '

' . __('This screen allows you to configure a network as having subdomains (site1.example.com) or subdirectories (example.com/site1). Subdomains require wildcard subdomains to be enabled in Apache and DNS records, if your host allows it.') . '

' . '

' . __('Choose subdomains or subdirectories; this can only be switched afterwards by reconfiguring your install. Fill out the network details, and click install. If this does not work, you may have to add a wildcard DNS record (for subdomains) or change to another setting in Permalinks (for subdirectories).') . '

' . '

' . __('The next screen for Network Setup will give you individually-generated lines of code to add to your wp-config.php and .htaccess files. Make sure the settings of your FTP client make files starting with a dot visible, so that you can find .htaccess; you may have to create this file if it really is not there. Make backup copies of those two files.') . '

' . '

' . __('Add a blogs.dir directory under /wp-content and add the designated lines of code to wp-config.php (just before /*...stop editing...*/) and .htaccess (replacing the existing WordPress rules).') . '

' . '

' . __('Once you add this code and refresh your browser, multisite should be enabled. This screen will keep an archive of the added code. You can toggle between Network Admin and Site Admin by clicking on the Howdy (Username) dropdown in the upper right of the administration area.') . '

' . '

' . __('The choice of subdirectory sites is disabled if this setup is more than a month old because of permalink problems with “/blog/” from the main site. This disabling will be addressed soon in a future version.') . '

' ); get_current_screen()->add_help_sidebar( '

' . __('For more information:') . '

' . '

' . __('Documentation on Creating a Network') . '

' . '

' . __('Documentation on the Network Screen') . '

' . '

' . __('Support Forums') . '

' ); include( ABSPATH . 'wp-admin/admin-header.php' ); ?>

Network * should not be a sudden "Welcome to a new install process! Fill this out and click here." See also contextual help todo. * * @since 3.0.0 */ function network_step1( $errors = false ) { global $is_apache; if ( get_option( 'siteurl' ) != get_option( 'home' ) ) { echo '

' . __('ERROR:') . ' ' . sprintf( __( 'Your WordPress address must match your Site address before creating a Network. See General Settings.' ), esc_url( admin_url( 'options-general.php' ) ) ) . '

'; echo '
'; include ( ABSPATH . 'wp-admin/admin-footer.php' ); die(); } if ( defined('DO_NOT_UPGRADE_GLOBAL_TABLES') ) { echo '

' . __('ERROR:') . ' ' . __( 'The constant DO_NOT_UPGRADE_GLOBAL_TABLES cannot be defined when creating a network.' ) . '

'; echo ''; include ( ABSPATH . 'wp-admin/admin-footer.php' ); die(); } $active_plugins = get_option( 'active_plugins' ); if ( ! empty( $active_plugins ) ) { echo '

' . __('Warning:') . ' ' . sprintf( __( 'Please deactivate your plugins before enabling the Network feature.' ), admin_url( 'plugins.php?plugin_status=active' ) ) . '

' . __( 'Once the network is created, you may reactivate your plugins.' ) . '

'; echo ''; include( ABSPATH . 'wp-admin/admin-footer.php' ); die(); } $hostname = get_clean_basedomain(); $has_ports = strstr( $hostname, ':' ); if ( ( false !== $has_ports && ! in_array( $has_ports, array( ':80', ':443' ) ) ) ) { echo '

' . __( 'ERROR:') . ' ' . __( 'You cannot install a network of sites with your server address.' ) . '

'; echo '

' . sprintf( __( 'You cannot use port numbers such as %s.' ), $has_ports ) . '

'; echo '' . __( 'Return to Dashboard' ) . ''; echo ''; include( ABSPATH . 'wp-admin/admin-footer.php' ); die(); } echo '
'; wp_nonce_field( 'install-network-1' ); $error_codes = array(); if ( is_wp_error( $errors ) ) { echo '

' . __( 'ERROR: The network could not be created.' ) . '

'; foreach ( $errors->get_error_messages() as $error ) echo "

$error

"; echo '
'; $error_codes = $errors->get_error_codes(); } if ( WP_CONTENT_DIR != ABSPATH . 'wp-content' ) echo '

' . __('Warning!') . ' ' . __( 'Networks may not be fully compatible with custom wp-content directories.' ) . '

'; $site_name = ( ! empty( $_POST['sitename'] ) && ! in_array( 'empty_sitename', $error_codes ) ) ? $_POST['sitename'] : sprintf( _x('%s Sites', 'Default network name' ), get_option( 'blogname' ) ); $admin_email = ( ! empty( $_POST['email'] ) && ! in_array( 'invalid_email', $error_codes ) ) ? $_POST['email'] : get_option( 'admin_email' ); ?>

' . __( 'Note:' ) . ' ' . __( 'Please make sure the Apache mod_rewrite module is installed as it will be used at the end of this installation.' ) . '

'; elseif ( $is_apache ) echo '

' . __( 'Warning!' ) . ' ' . __( 'It looks like the Apache mod_rewrite module is not installed.' ) . '

'; if ( $got_mod_rewrite || $is_apache ) // Protect against mod_rewrite mimicry (but ! Apache) echo '

' . __( 'If mod_rewrite is disabled, ask your administrator to enable that module, or look at the Apache documentation or elsewhere for help setting it up.' ) . '

'; } if ( allow_subdomain_install() && allow_subdirectory_install() ) : ?>

You cannot change this later.' ); ?>

site1.%1$s and site2.%1$s', 'subdomain examples' ), $hostname ); ?>
%1$s/site1 and %1$s/site2', 'subdirectory examples' ), $hostname ); ?>

%1$s before enabling the network feature. It will still be possible to visit your site using the www prefix with an address like %2$s but any links will not have the www prefix.' ), substr( $hostname, 4 ), $hostname ); ?>

%s.' ), $hostname ); ?>

localhost, the sites in your WordPress network must use sub-directories. Consider using localhost.localdomain if you wish to use sub-domains.' ); // Uh oh: if ( !allow_subdirectory_install() ) echo ' ' . __( 'Warning!' ) . ' ' . __( 'The main site in a sub-directory install will need to use a modified permalink structure, potentially breaking existing links.' ) . ''; ?>
' . __( 'Warning!' ) . ' ' . __( 'The main site in a sub-directory install will need to use a modified permalink structure, potentially breaking existing links.' ) . ''; ?>
' . __( 'The main site in a sub-directory install will need to use a modified permalink structure, potentially breaking existing links.' ) . ''; ?>
%s.' ), $hostname ); ?>


' . $errors->get_error_message() . ''; if ( $_POST ) { if ( allow_subdomain_install() ) $subdomain_install = allow_subdirectory_install() ? ! empty( $_POST['subdomain_install'] ) : true; else $subdomain_install = false; } else { if ( is_multisite() ) { $subdomain_install = is_subdomain_install(); ?>

get_var( "SELECT meta_value FROM $wpdb->sitemeta WHERE site_id = 1 AND meta_key = 'subdomain_install'" ); ?>

Caution: We recommend you back up your existing wp-config.php and %s files.' ), '.htaccess' ); elseif ( file_exists( ABSPATH . 'web.config' ) ) printf( __( 'Caution: We recommend you back up your existing wp-config.php and %s files.' ), 'web.config' ); else _e( 'Caution: We recommend you back up your existing wp-config.php file.' ); ?>

  1. blogs.dir directory at %s/blogs.dir. This directory is used to store uploaded media for your additional sites and must be writeable by the web server.' ), WP_CONTENT_DIR ); if ( WP_CONTENT_DIR != ABSPATH . 'wp-content' ) echo ' ' . __('Warning:') . ' ' . __( 'Networks may not be fully compatible with custom wp-content directories.' ) . ''; ?>

  2. wp-config.php file in %s above the line reading /* That’s all, stop editing! Happy blogging. */:' ), ABSPATH ); ?>

    '', 'SECURE_AUTH_KEY' => '', 'LOGGED_IN_KEY' => '', 'NONCE_KEY' => '', 'AUTH_SALT' => '', 'SECURE_AUTH_SALT' => '', 'LOGGED_IN_SALT' => '', 'NONCE_SALT' => '' ); foreach ( $keys_salts as $c => $v ) { if ( defined( $c ) ) unset( $keys_salts[ $c ] ); } if ( ! empty( $keys_salts ) ) { $keys_salts_str = ''; $from_api = wp_remote_get( 'https://api.wordpress.org/secret-key/1.1/salt/' ); if ( is_wp_error( $from_api ) ) { foreach ( $keys_salts as $c => $v ) { $keys_salts_str .= "\ndefine( '$c', '" . wp_generate_password( 64, true, true ) . "' );"; } } else { $from_api = explode( "\n", wp_remote_retrieve_body( $from_api ) ); foreach ( $keys_salts as $c => $v ) { $keys_salts_str .= "\ndefine( '$c', '" . substr( array_shift( $from_api ), 28, 64 ) . "' );"; } } $num_keys_salts = count( $keys_salts ); ?>

    wp-config.php file.', 'These unique authentication keys are also missing from your wp-config.php file.', $num_keys_salts ); ?>

    3. '; } else { $web_config_file = ' '; } ?>

  3. web.config file in %s, replacing other WordPress rules:' ), ABSPATH ); ?>

  • .htaccess file in %s, replacing other WordPress rules:' ), ABSPATH ); ?>

    • get_error_codes() ) && 'no_wildcard_dns' == $result->get_error_code() ) network_step2( $result ); else network_step1( $result ); } else { network_step2(); } } else { network_step2(); } } elseif ( is_multisite() || network_domain_check() ) { network_step2(); } else { network_step1(); } ?>