show_errors example

    public function __construct( $dbuser, $dbpassword, $dbname, $dbhost ) {
        if ( WP_DEBUG && WP_DEBUG_DISPLAY ) {
            $this->show_errors();
        }

        // Use the `mysqli` extension if it exists unless `WP_USE_EXT_MYSQL` is defined as true.         if ( function_exists( 'mysqli_connect' ) ) {
            $this->use_mysqli = true;

            if ( defined( 'WP_USE_EXT_MYSQL' ) ) {
                $this->use_mysqli = ! WP_USE_EXT_MYSQL;
            }
        }

        

        do_action( 'network_site_new_created_user', $user_id );
    }

    $wpdb->hide_errors();
    $id = wpmu_create_blog( $newdomain, $path, $title, $user_id, $meta, get_current_network_id() );
    $wpdb->show_errors();

    if ( ! is_wp_error( $id ) ) {
        if ( ! is_super_admin( $user_id ) && ! get_user_option( 'primary_blog', $user_id ) ) {
            update_user_option( $user_id, 'primary_blog', $id, true );
        }

        wpmu_new_site_admin_notification( $id, $user_id );
        wpmu_welcome_notification( $id, $user_id, $password, $title, array( 'public' => 1 ) );
        wp_redirect(
            add_query_arg(
                array(
                    

 elseif ( empty( $admin_email ) ) {
            // TODO: Poka-yoke.             display_setup_form( __( 'You must provide an email address.' ) );
            $error = true;
        } elseif ( ! is_email( $admin_email ) ) {
            // TODO: Poka-yoke.             display_setup_form( __( 'Sorry, that is not a valid email address. Email addresses look like <code>username@example.com</code>.' ) );
            $error = true;
        }

        if ( false === $error ) {
            $wpdb->show_errors();
            $result = wp_install( $weblog_title, $user_name, $admin_email, $public, '', wp_slash( $admin_password ), $loaded_language );
            ?> <h1><?php _e( 'Success!' ); ?></h1> <p><?php _e( 'WordPress has been installed. Thank you, and enjoy!' ); ?></p> <table class="form-table install-success"> <tr> <th><?php _e( 'Username' ); ?></th> <td><?php echo esc_html( sanitize_user( $user_name, true ) ); ?></td> </tr> <tr> <th>

$level = get_user_meta( $user->ID, $wpdb->prefix . 'user_level', true );
            $role  = translate_level_to_role( $level );
            update_user_meta( $user->ID, $wpdb->prefix . 'capabilities', array( $role => true ) );
        }

    endforeach;
    $old_user_fields = array( 'user_firstname', 'user_lastname', 'user_icq', 'user_aim', 'user_msn', 'user_yim', 'user_idmode', 'user_ip', 'user_domain', 'user_browser', 'user_description', 'user_nickname', 'user_level' );
    $wpdb->hide_errors();
    foreach ( $old_user_fields as $old ) {
        $wpdb->query( "ALTER TABLE $wpdb->users DROP $old" );
    }
    $wpdb->show_errors();

    // Populate comment_count field of posts table.     $comments = $wpdb->get_results( "SELECT comment_post_ID, COUNT(*) as c FROM $wpdb->comments WHERE comment_approved = '1' GROUP BY comment_post_ID" );
    if ( is_array( $comments ) ) {
        foreach ( $comments as $comment ) {
            $wpdb->update( $wpdb->posts, array( 'comment_count' => $comment->c ), array( 'ID' => $comment->comment_post_ID ) );
        }
    }

    /* * Some alpha versions used a post status of object instead of attachment * and put the mime type in post_type instead of post_mime_type. */