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The `WP_INSTALLING` constant is a flag that WordPress sets in a number of places, telling the system that options should be fetched directly from the database instead of from the cache, that WP should not ping wordpress.org for updates, that the normal "not installed" checks should be bypassed, and so on. A constant is generally necessary for this purpose, because the flag is typically set before the WP bootstrap, meaning that WP functions are not yet available. However, it is possible - notably, during `wpmu_create_blog()` - for the "installing" flag to be set after WP has already loaded. In these cases, `WP_INSTALLING` would be set for the remainder of the process, since there's no way to change a constant once it's defined. This, in turn, polluted later function calls that ought to have been outside the scope of site creation, particularly the non-caching of option data. The problem was particularly evident in the case of the automated tests, where `WP_INSTALLING` was set the first time a site was created, and remained set for the rest of the suite. The new `wp_installing()` function allows developers to fetch the current installation status (when called without any arguments) or to set the installation status (when called with a boolean `true` or `false`). Use of the `WP_INSTALLING` constant is still supported; `wp_installing()` will default to `true` if the constant is defined during the bootstrap. Props boonebgorges, jeremyfelt. See #31130. Built from https://develop.svn.wordpress.org/trunk@34828 git-svn-id: http://core.svn.wordpress.org/trunk@34793 1a063a9b-81f0-0310-95a4-ce76da25c4cd
226 lines
8.7 KiB
PHP
226 lines
8.7 KiB
PHP
<?php
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/**
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* Used to set up and fix common variables and include
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* the Multisite procedural and class library.
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*
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* Allows for some configuration in wp-config.php (see ms-default-constants.php)
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*
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* @package WordPress
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* @subpackage Multisite
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* @since 3.0.0
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*/
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/** WP_Network class */
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require_once( ABSPATH . WPINC . '/class-wp-network.php' );
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/** Multisite loader */
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require_once( ABSPATH . WPINC . '/ms-load.php' );
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/** Default Multisite constants */
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require_once( ABSPATH . WPINC . '/ms-default-constants.php' );
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if ( defined( 'SUNRISE' ) ) {
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include_once( WP_CONTENT_DIR . '/sunrise.php' );
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}
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/** Check for and define SUBDOMAIN_INSTALL and the deprecated VHOST constant. */
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ms_subdomain_constants();
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if ( !isset( $current_site ) || !isset( $current_blog ) ) {
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// Given the domain and path, let's try to identify the network and site.
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// Usually, it's easier to query the site first, which declares its network.
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// In limited situations, though, we either can or must find the network first.
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$domain = strtolower( stripslashes( $_SERVER['HTTP_HOST'] ) );
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if ( substr( $domain, -3 ) == ':80' ) {
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$domain = substr( $domain, 0, -3 );
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$_SERVER['HTTP_HOST'] = substr( $_SERVER['HTTP_HOST'], 0, -3 );
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} elseif ( substr( $domain, -4 ) == ':443' ) {
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$domain = substr( $domain, 0, -4 );
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$_SERVER['HTTP_HOST'] = substr( $_SERVER['HTTP_HOST'], 0, -4 );
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}
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$path = stripslashes( $_SERVER['REQUEST_URI'] );
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if ( is_admin() ) {
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$path = preg_replace( '#(.*)/wp-admin/.*#', '$1/', $path );
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}
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list( $path ) = explode( '?', $path );
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// If the network is defined in wp-config.php, we can simply use that.
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if ( defined( 'DOMAIN_CURRENT_SITE' ) && defined( 'PATH_CURRENT_SITE' ) ) {
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$current_site = new stdClass;
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$current_site->id = defined( 'SITE_ID_CURRENT_SITE' ) ? SITE_ID_CURRENT_SITE : 1;
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$current_site->domain = DOMAIN_CURRENT_SITE;
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$current_site->path = PATH_CURRENT_SITE;
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if ( defined( 'BLOG_ID_CURRENT_SITE' ) ) {
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$current_site->blog_id = BLOG_ID_CURRENT_SITE;
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} elseif ( defined( 'BLOGID_CURRENT_SITE' ) ) { // deprecated.
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$current_site->blog_id = BLOGID_CURRENT_SITE;
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}
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if ( 0 === strcasecmp( $current_site->domain, $domain ) && 0 === strcasecmp( $current_site->path, $path ) ) {
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$current_blog = get_site_by_path( $domain, $path );
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} elseif ( '/' !== $current_site->path && 0 === strcasecmp( $current_site->domain, $domain ) && 0 === stripos( $path, $current_site->path ) ) {
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// If the current network has a path and also matches the domain and path of the request,
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// we need to look for a site using the first path segment following the network's path.
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$current_blog = get_site_by_path( $domain, $path, 1 + count( explode( '/', trim( $current_site->path, '/' ) ) ) );
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} else {
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// Otherwise, use the first path segment (as usual).
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$current_blog = get_site_by_path( $domain, $path, 1 );
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}
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} elseif ( ! is_subdomain_install() ) {
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/*
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* A "subdomain" install can be re-interpreted to mean "can support any domain".
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* If we're not dealing with one of these installs, then the important part is determining
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* the network first, because we need the network's path to identify any sites.
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*/
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if ( ! $current_site = wp_cache_get( 'current_network', 'site-options' ) ) {
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// Are there even two networks installed?
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$one_network = $wpdb->get_row( "SELECT * FROM $wpdb->site LIMIT 2" ); // [sic]
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if ( 1 === $wpdb->num_rows ) {
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$current_site = new WP_Network( $one_network );
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wp_cache_add( 'current_network', $current_site, 'site-options' );
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} elseif ( 0 === $wpdb->num_rows ) {
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ms_not_installed( $domain, $path );
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}
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}
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if ( empty( $current_site ) ) {
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$current_site = WP_Network::get_by_path( $domain, $path, 1 );
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}
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if ( empty( $current_site ) ) {
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/**
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* Fires when a network cannot be found based on the requested domain and path.
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*
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* At the time of this action, the only recourse is to redirect somewhere
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* and exit. If you want to declare a particular network, do so earlier.
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*
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* @since 4.4.0
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*
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* @param string $domain The domain used to search for a network.
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* @param string $path The path used to search for a path.
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*/
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do_action( 'ms_network_not_found', $domain, $path );
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ms_not_installed( $domain, $path );
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} elseif ( $path === $current_site->path ) {
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$current_blog = get_site_by_path( $domain, $path );
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} else {
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// Search the network path + one more path segment (on top of the network path).
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$current_blog = get_site_by_path( $domain, $path, substr_count( $current_site->path, '/' ) );
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}
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} else {
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// Find the site by the domain and at most the first path segment.
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$current_blog = get_site_by_path( $domain, $path, 1 );
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if ( $current_blog ) {
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$current_site = WP_Network::get_instance( $current_blog->site_id ? $current_blog->site_id : 1 );
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} else {
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// If you don't have a site with the same domain/path as a network, you're pretty screwed, but:
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$current_site = WP_Network::get_by_path( $domain, $path, 1 );
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}
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}
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// The network declared by the site trumps any constants.
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if ( $current_blog && $current_blog->site_id != $current_site->id ) {
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$current_site = WP_Network::get_instance( $current_blog->site_id );
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}
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// No network has been found, bail.
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if ( empty( $current_site ) ) {
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/** This action is documented in wp-includes/ms-settings.php */
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do_action( 'ms_network_not_found', $domain, $path );
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ms_not_installed( $domain, $path );
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}
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// @todo Investigate when exactly this can occur.
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if ( empty( $current_blog ) && wp_installing() ) {
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$current_blog = new stdClass;
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$current_blog->blog_id = $blog_id = 1;
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}
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// No site has been found, bail.
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if ( empty( $current_blog ) ) {
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// We're going to redirect to the network URL, with some possible modifications.
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$scheme = is_ssl() ? 'https' : 'http';
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$destination = "$scheme://{$current_site->domain}{$current_site->path}";
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/**
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* Fires when a network can be determined but a site cannot.
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*
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* At the time of this action, the only recourse is to redirect somewhere
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* and exit. If you want to declare a particular site, do so earlier.
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*
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* @since 3.9.0
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*
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* @param object $current_site The network that had been determined.
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* @param string $domain The domain used to search for a site.
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* @param string $path The path used to search for a site.
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*/
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do_action( 'ms_site_not_found', $current_site, $domain, $path );
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if ( is_subdomain_install() && ! defined( 'NOBLOGREDIRECT' ) ) {
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// For a "subdomain" install, redirect to the signup form specifically.
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$destination .= 'wp-signup.php?new=' . str_replace( '.' . $current_site->domain, '', $domain );
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} elseif ( is_subdomain_install() ) {
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// For a "subdomain" install, the NOBLOGREDIRECT constant
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// can be used to avoid a redirect to the signup form.
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// Using the ms_site_not_found action is preferred to the constant.
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if ( '%siteurl%' !== NOBLOGREDIRECT ) {
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$destination = NOBLOGREDIRECT;
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}
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} elseif ( 0 === strcasecmp( $current_site->domain, $domain ) ) {
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/*
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* If the domain we were searching for matches the network's domain,
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* it's no use redirecting back to ourselves -- it'll cause a loop.
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* As we couldn't find a site, we're simply not installed.
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*/
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ms_not_installed( $domain, $path );
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}
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header( 'Location: ' . $destination );
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exit;
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}
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// Figure out the current network's main site.
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if ( empty( $current_site->blog_id ) ) {
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if ( $current_blog->domain === $current_site->domain && $current_blog->path === $current_site->path ) {
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$current_site->blog_id = $current_blog->blog_id;
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} elseif ( ! $current_site->blog_id = wp_cache_get( 'network:' . $current_site->id . ':main_site', 'site-options' ) ) {
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$current_site->blog_id = $wpdb->get_var( $wpdb->prepare( "SELECT blog_id FROM $wpdb->blogs WHERE domain = %s AND path = %s",
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$current_site->domain, $current_site->path ) );
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wp_cache_add( 'network:' . $current_site->id . ':main_site', $current_site->blog_id, 'site-options' );
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}
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}
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$blog_id = $current_blog->blog_id;
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$public = $current_blog->public;
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if ( empty( $current_blog->site_id ) ) {
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// This dates to [MU134] and shouldn't be relevant anymore,
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// but it could be possible for arguments passed to insert_blog() etc.
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$current_blog->site_id = 1;
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}
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$site_id = $current_blog->site_id;
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wp_load_core_site_options( $site_id );
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}
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$wpdb->set_prefix( $table_prefix, false ); // $table_prefix can be set in sunrise.php
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$wpdb->set_blog_id( $current_blog->blog_id, $current_blog->site_id );
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$table_prefix = $wpdb->get_blog_prefix();
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$_wp_switched_stack = array();
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$switched = false;
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// need to init cache again after blog_id is set
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wp_start_object_cache();
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if ( ! $current_site instanceof WP_Network ) {
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$current_site = new WP_Network( $current_site );
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}
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// Define upload directory constants
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ms_upload_constants();
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