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install_blog ›

SinceMU
Deprecatedn/a
install_blog ( $blog_id, $blog_title = '' )
Parameters: (2)
  • (int) $blog_id The value returned by insert_blog().
    Required: Yes
  • (string) $blog_title The title of the new site.
    Required: No
    Default: (empty)
Defined at:
Codex:

Install an empty blog.

Creates the new blog tables and options. If calling this function directly, be sure to use switch_to_blog() first, so that $wpdb points to the new blog.



Source

function install_blog( $blog_id, $blog_title = '' ) {
	global $wpdb, $wp_roles;

	// Cast for security
	$blog_id = (int) $blog_id;

	require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );

	$suppress = $wpdb->suppress_errors();
	if ( $wpdb->get_results( "DESCRIBE {$wpdb->posts}" ) )
		die( '<h1>' . __( 'Already Installed' ) . '</h1><p>' . __( 'You appear to have already installed WordPress. To reinstall please clear your old database tables first.' ) . '</p></body></html>' );
	$wpdb->suppress_errors( $suppress );

	$url = get_blogaddress_by_id( $blog_id );

	// Set everything up
	make_db_current_silent( 'blog' );
	populate_options();
	populate_roles();

	// populate_roles() clears previous role definitions so we start over.
	$wp_roles = new WP_Roles();

	$siteurl = $home = untrailingslashit( $url );

	if ( ! is_subdomain_install() ) {

 		if ( 'https' === parse_url( get_site_option( 'siteurl' ), PHP_URL_SCHEME ) ) {
 			$siteurl = set_url_scheme( $siteurl, 'https' );
 		}
 		if ( 'https' === parse_url( get_home_url( get_network()->site_id ), PHP_URL_SCHEME ) ) {
 			$home = set_url_scheme( $home, 'https' );
 		}

	}

	update_option( 'siteurl', $siteurl );
	update_option( 'home', $home );

	if ( get_site_option( 'ms_files_rewriting' ) )
		update_option( 'upload_path', UPLOADBLOGSDIR . "/$blog_id/files" );
	else
		update_option( 'upload_path', get_blog_option( get_network()->site_id, 'upload_path' ) );

	update_option( 'blogname', wp_unslash( $blog_title ) );
	update_option( 'admin_email', '' );

	// remove all perms
	$table_prefix = $wpdb->get_blog_prefix();
	delete_metadata( 'user', 0, $table_prefix . 'user_level',   null, true ); // delete all
	delete_metadata( 'user', 0, $table_prefix . 'capabilities', null, true ); // delete all
}