HOW TO REMOVE NOTICE "UNDEFINED INDEX" ?

-
Add this at the top of your file

<?php
error_reporting(E_ERROR | E_PARSE);
?>

Comments

Post a Comment

Popular posts from this blog

Script For Login, Logout and View Using PHP, MySQL and Bootstrap

-
Image
I am assuming here that you are familiar with HTML and CSS. I have commented the code with the necessary information in the major part of the code. So you can understand easily. I have also attached the source code so you can download it and use it. Let's start. Note: I have updating this article on my personal blog. The following are the points we will be learn in this article: Creating Database in phpmyadmin. Create connection with MySQL database. Insert, delete and view data from MySQL database. Some Bootstrap components. Sessions in PHP. Files and IDE: Registration Login Logout Welcome Admin_login View_users Db_conection Delete.php I am using PHPStorm for the coding and Bootstrap framework for front end development. Create Database: Create Tables: Create columns in Users table: Crate Admin Table: Create Admin Columns: Registration.php: <html>   <head lang= "en" >      ...
Read more

Hyperledger Development with in 10 days — Day 6

-
Image
Chaincode Development Introduction For the first five days, we have seen the concepts of Hyperledger fabric and various components of it. We have started our own network, deployed the simple smart contract. We have done transactions, we transferred data privately. In this part we are going to look into Chaincode development aka smart contract development for Hyperledger Fabric. We know that chaincode is running in different docker container once it is instantiated on channel isolating from the peers. Typically smart contract is the business logic agreed by the members to execute with consensus. However within the same network multiple many chaincode might be running on different channels. “Without appropriate permissions a chaincode cannot invoke another chaincode”. Various levels of Chaincodes There are two perspective on chaincodes. First, the perspective of the developer who is developing blockchain application — Chaincode for developers Second, the bl...
Read more

Real-Time Web Interface to MQTT using Socket.io and Node.js

-
Image
Real-Time Web Interface to MQTT using Socket.io and Node.js First, all credit for this tutorial goes to  Robert Hekkers Blog .  I've altered it slightly to pick up newer versions of the various javascript libraries. If you've followed along with my  earlier post , you now have MQTT running on your Raspberry Pi, and an Arduino IoT client that can publish and subscribe to MQTT packets.  The next step is developing a real-time web interface that can control your MQTT network. Why Socket.io and Node.js? Web browsers typically operate by pulling data from a server when you click on a link.  Servers don't usually keep an open connection to the browsers it has serviced, so if some event happens on the server side, the server cannot push that event to your browser, unless you refresh the page. That's where Socket.io comes in handy.  Socket.io maintains an open connection between the server and the browser, which enables the server to push updates to the bro...
Read more