User login functionality in a website is a pretty simple but compulsory component. In all modern dynamic websites, the client asks for a login and admin panel so that they can do basic tasks.
Today I will give you a simple and clean-looking login system with PHP and MySQL. We will maintain the login tracking with PHP Sessions and let Bootstrap make us a clean UI Design.
Why PHP? Because despite being ancient. As some developers believe. PHP is fundamental to our web.
Around 81.7% of the websites on the web use PHP as their server-side language.
And why not PHP?
PHP powers famous CMS(Content Management System) like WordPress and Joomla. Open Source OOPs frameworks like Laravel and CodeIgniter. And numerous others.
Reason: PHP is simple and clean to write. Easy-to-understand and beginner-friendly. Vast community support and adaptability toward developer needs.
Let’s what will do in this simple project:
-User Login Design with Bootstrap 5
- PHP code for MySQL Database
- Logic to process the login request
- Throw errors if the wrong entry of login credentials
- Redirect to Admin if successful request
- Conclusion
Forging a clean UI with Bootstrap for User Login
First, we create index.php and write our UI design with the latest Bootstrap 5. We added Google Fonts Poppins for making our UI look eye-catching. Whenever possible, we relied on CDN links because it keeps our code lightweight and less resource intensive.
Next, we do simple CSS styling in our style.css file. To make our plain background something fun to look at, I have added a small background image in webp format. Also, coded in background color as a backup in the case of legacy browsers that do not support webp format yet.
Build and Hook up your MySQL database
Before we start preceding the actual PHP logic part. We need a database for keeping a record of our login users. And the best choice of course is MySQL–why because it’s free and open source like PHP. Not to mention very beginner friendly.
First, go to your PHPMyAdmin whether you’re working online or in the local environment. And set up your database with a relevant name to your project.
After the Database is created. Setup a table named users which has mainly four columns we need: id, email, password, and active. We can also execute the below SQL code in the PHPMyAdmin SQL tab and this will generate our table “users”.
Now, we can insert user login details by running the following SQL code. We are hard coding this now. But we can create a PHP code for the signup process later. First, we must deploy our user login system.
Next in line, we hook up a connection between MySQL and PHP:
Now our UI and database are set. Next, we tackle our User Login process head-on! Yay! I am excited!
This document provides instructions for creating a basic text chat application. It outlines creating the user interface with HTML elements like forms and divs. It also discusses linking a CSS stylesheet to style the interface and JavaScript files to add interactivity. The coding process is broken down into parts for signing in, sending messages, and updating data between the client and server using AJAX calls. Server-side processing is handled by PHP scripts.
This document provides an introduction to the CodeIgniter web application framework. It discusses CodeIgniter's MVC architecture, components like controllers, views and models, and how they work together. It also covers common tasks like form validation, sessions, and CRUD operations using CodeIgniter. Key aspects of CodeIgniter mentioned include its ease of use, configuration, libraries, and documentation.
This document discusses various PHP functions and concepts related to working with databases in PHP, including:
- PHP functions for arrays, calendars, file systems, MySQL, and math
- Using phpMyAdmin to manage MySQL databases
- The GET and POST methods for passing form data
- SQL commands for creating, altering, and manipulating database tables
- Connecting to a MySQL database from PHP using mysql_connect()
It provides code examples for using many of these PHP functions and SQL commands to interact with databases. The document is an overview of key topics for learning PHP database programming.
This document discusses PHP includes and error handling. It provides information on the common PHP include functions like include(), include_once(), require(), and require_once(). It explains how includes work and some potential problems with includes like arbitrary local file includes triggered by malicious user input. The document also discusses PHP error types like informational errors, actionable errors, and fatal errors.
This document provides an overview of Mojolicious, a real-time web application framework written in Perl. It discusses getting started with Mojolicious::Lite, including routes, placeholders, templates and layouts. It also covers sessions, growing applications out of Lite into Mojolicious, and additional Mojo modules for things like web clients and HTML parsing. Resources for learning more about Mojolicious are provided.
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If you are interested in trying to build a registration form in HTML and send emails via PHPMailer then do check out this article as well. And as usual, we have already built a login system with simple PHP. Let’s start coding away.
This document describes a user authentication module created using PHP. It includes pages for sign up, login, password reset, and a user inbox. The sign up page collects user details and validates the information before inserting a new user record into a MySQL database. The login page authenticates users by matching their user ID and password. Password and security answers are encrypted before storage. The module provides functionality for common authentication tasks.
This document provides instructions for creating a basic text chat application. It outlines creating the user interface with HTML elements like forms and divs. It also discusses linking a CSS stylesheet to style the interface and JavaScript files to add interactivity. The coding process is broken down into parts for signing in, sending messages, and updating data between the client and server using AJAX calls. Server-side processing is handled by PHP scripts.
This document provides an introduction to the CodeIgniter web application framework. It discusses CodeIgniter's MVC architecture, components like controllers, views and models, and how they work together. It also covers common tasks like form validation, sessions, and CRUD operations using CodeIgniter. Key aspects of CodeIgniter mentioned include its ease of use, configuration, libraries, and documentation.
This document discusses various PHP functions and concepts related to working with databases in PHP, including:
- PHP functions for arrays, calendars, file systems, MySQL, and math
- Using phpMyAdmin to manage MySQL databases
- The GET and POST methods for passing form data
- SQL commands for creating, altering, and manipulating database tables
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It provides code examples for using many of these PHP functions and SQL commands to interact with databases. The document is an overview of key topics for learning PHP database programming.
This document discusses PHP includes and error handling. It provides information on the common PHP include functions like include(), include_once(), require(), and require_once(). It explains how includes work and some potential problems with includes like arbitrary local file includes triggered by malicious user input. The document also discusses PHP error types like informational errors, actionable errors, and fatal errors.
This document provides an overview of Mojolicious, a real-time web application framework written in Perl. It discusses getting started with Mojolicious::Lite, including routes, placeholders, templates and layouts. It also covers sessions, growing applications out of Lite into Mojolicious, and additional Mojo modules for things like web clients and HTML parsing. Resources for learning more about Mojolicious are provided.
Learn to build a CodeIgniter Login and Registration with source code.pdfBe Problem Solver
Hey, guys today we will learn how to build a simple yet powerful Codeigniter login and registration system from scratch. And don’t worry at the end of the tutorial we will give you the source of Codeigniter user login and registration.
If you are interested in trying to build a registration form in HTML and send emails via PHPMailer then do check out this article as well. And as usual, we have already built a login system with simple PHP. Let’s start coding away.
This document describes a user authentication module created using PHP. It includes pages for sign up, login, password reset, and a user inbox. The sign up page collects user details and validates the information before inserting a new user record into a MySQL database. The login page authenticates users by matching their user ID and password. Password and security answers are encrypted before storage. The module provides functionality for common authentication tasks.
Microsoft is investing in PHP efforts to attract more customers to its platform through world-class PHP support and resources. PHP is widely used for popular web applications, and it is important for Microsoft to support it as a first-class citizen. The document discusses PHP support on Windows, PHP support on Windows Azure cloud computing platform, and related SDKs and tools.
Get things done with Yii - quickly build webapplicationsGiuliano Iacobelli
Lesson teached at Università di Roma Tre - Software Engineering course.
Web is plenty of amazing tools used daily by millions of people. A good idea can turn to be a highly profitable business if well executed. Yii framework is an ideal tool to build in short time an MVP of your product to start as soon as possible to find your market fit. Here follows some infos about the framework and steps on how to build a simple blog over Yii.
Lecture on CodeIgniter, # OSS Essential Training Program at Chittagong University of Engineering Technology, February 2008, http://bdosdn.org/wsatcuet.php
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CyberArk Impact 2017 - REST for the Rest of UsJoe Garcia
Are you a Vault Admin drowning in work? Unfortunately, the great minds at CyberArk haven’t figured out a way to clone you… yet. In the meantime, there’s the REST API to help you along the way!
Come POST up in a chair and GET your paper and pencils ready…our REST expert is about to PUT knowledge in your brain and DELETE your old way of thinking! After this session, you’ll leave with a better understanding of our REST API, how to easily combine multiple methods to create simple scripts, and tips on how to use Postman to your benefit.
Slide links:
- https://lumberjack.rareloop.com
- https://docs.lumberjack.rareloop.com
- https://github.com/Rareloop/lumberjack-bedrock-installer
- https://github.com/Rareloop/lumberjack
- https://github.com/Rareloop/lumberjack-validation
- https://github.com/Rareloop/hatchet
- https://lizkeogh.com/2017/08/31/reflecting-reality/amp
- https://www.upstatement.com/timber
- https://roots.io/bedrock
- https://scotch.io/bar-talk/s-o-l-i-d-the-first-five-principles-of-object-oriented-design
- https://github.com/zendframework/zend-diactoros
- https://www.php-fig.org
- http://php-di.org
---
Often WordPress themes are not easy to change, maintain or fun to work on. This can rule WordPress out as a viable option for bespoke, non-trivial websites.
In this talk we’ll dive into how this happens & look at how we can benefit from software engineering techniques to help make your code easier to change. I’ll also show how using Lumberjack, a powerful MVC framework built on Timber, can be used to power-up your themes.
This document provides instructions on converting a Photoshop (PSD) design into a WordPress theme. It explains that you should visualize how the PSD design will translate to HTML elements like headers, menus, content areas, etc. before beginning to code. Key areas covered include using an existing framework versus coding from scratch, including necessary WordPress functions and files, and organizing code into templates, functions.php, and other standard WordPress theme files. The goal is to understand the technical structure of the design and properly structure the theme code.
This document summarizes sessions, cookies, and GET and POST methods in web development. It explains that cookies are small files stored on a user's computer that can track users across websites. Sessions allow servers to store temporary data during a user's browsing session. The document outlines how to create, retrieve, and delete both cookies and sessions in PHP. It also describes the differences between the GET and POST methods for submitting form data, including that GET appends data to the URL while POST does not.
Making WordPress Your CMS and Automatically Updating a Self Hosted WordPress ...cehwitham
This document provides code snippets to customize the WordPress admin interface for clients. It includes:
1) Customizing the login screen by adding a logo and link.
2) Giving editors menu and widget permissions.
3) Adding branding to the title bar and footer by including the developer's logo and contact details.
4) Removing unnecessary widgets from the dashboard and adding support information and an RSS feed.
5) Instructions for setting up automatic plugin updates by adding metadata and uploading files to a web server.
The document discusses security best practices for PHP and MySQL web applications. It covers securing MySQL configurations, using encryption and access privileges appropriately. For PHP, it recommends filtering all external data, considering potential attacks like SQL injection, XSS, session hijacking and code injection. It provides examples of each attack and methods to prevent them, such as prepared statements, output encoding and regenerating session IDs.
This document provides an overview of ASP.NET MVC frameworks and how to get started with ASP.NET MVC 4. It discusses how ASP.NET MVC supports the MVC pattern and test-driven development. It also describes how to install ASP.NET MVC 4, create a basic MVC 4 project with different templates, add controllers and views, and connect to a database using Entity Framework.
This document discusses Devise, a flexible authentication solution for Rails applications. Devise allows authentication through username/password, OAuth, and other mechanisms. It follows the MVC pattern and integrates fully with Rails. Devise provides modules for common authentication needs like confirmable, recoverable, and lockable users. The document also provides instructions for installing Devise and generating Devise views and models. It demonstrates configuring Devise authentication in controllers and adding Devise authentication to tests.
Codebits 2012 - Fast relational web site construction.Nelson Gomes
The document discusses how to use PHP frameworks like Doctrine and Smarty to rapidly develop complex relational web sites. It introduces these frameworks and how they help manage database connections, maintain relational integrity, and perform queries and transactions securely. The document provides an example of using Doctrine to access data across multiple tables with minimal programming and increased security compared to traditional PHP and SQL approaches.
Web development involves creating websites for the Internet. Web pages can be static, with fixed content, or dynamic, where content can change on the client side. HTML5 is the latest version of HTML and introduces new markup elements, input types, and form attributes. It also supports audio and video elements. CSS3 adds new selectors, properties and values for styling and layout. PHP is a server-side scripting language commonly used for web development. Popular PHP frameworks like Yii, CodeIgniter and Zend help support the development of dynamic websites and applications.
The document discusses various cybersecurity risks and best practices to address them. It covers topics like information leakage, outdated software, authorization bypass, cross-site request forgery (CSRF), cross-site scripting (XSS), social engineering, and the importance of user training. The key message is that while technology is important, humans are often the weakest link and most common cause of breaches. Organizations must have security awareness programs to educate employees on threats like phishing.
Microsoft is committed to supporting PHP as a first-class citizen on Windows. There are several initiatives to improve PHP performance and integration with Windows and Microsoft technologies. These include optimizing PHP for Windows, FastCGI support in IIS for better performance, the WinCache extension to accelerate PHP applications, and a SQL Server driver for PHP. Microsoft also provides tools like the Web Platform Installer to easily install PHP environments, and SDKs to integrate PHP with technologies like SQL Server, Azure, and OData. Resources are available to help developers learn more about PHP on Windows.
Microsoft is committed to supporting PHP as a first-class citizen on Windows. There are several initiatives to improve PHP performance and integration with Windows and Microsoft technologies. These include optimizing PHP for Windows, FastCGI support in IIS for better performance, the WinCache extension to accelerate PHP applications, and a SQL Server driver for PHP. Microsoft also provides tools to simplify PHP development and hosting on Windows, such as the Web Platform Installer, SDKs, and IDE plugins. Resources are available to help developers integrate PHP applications with Windows, Azure, and other Microsoft technologies.
Submit form with Ajax and jQuery without reloading page.pdfBe Problem Solver
Howdy friends, these days when people fill out a form on webpages they want an instant response!
So today in this article, we will show you how to submit the form with Ajax and jQuery without reloading the page. Yup! your form will be submitted but the webpage won’t refresh at all. To achieve this we will use our trusted jQuery and Ajax.
But Ajax is the key here!
Because it allows us to send and receive data without refreshing our webpage. Don’t worry I will explain it in detail in the next section.
You can use our code in combination with PHPMailer or Sendgrid to send emails as well. And send emails without any refresh or reload. Meaning with Ajax form submission without refresh, you can build applications where you can submit the form and display the results on the same page.
Anyway, let’s learn the basics first of jQuery and Ajax.
The document provides an overview of PHP web development. It discusses the history and basics of PHP, including setting up a development environment and writing simple PHP code. It also covers MySQL databases and how to connect to and query a database from PHP. Content management systems (CMS) are explained, using the mbstu.ac.bd site as an example. Advanced topics like frameworks, Ajax, and JavaScript libraries are briefly introduced.
With a complete new Identity/Access Management Suite on the Oracle market,
one might forget the good old SSO server, bundled with each and every IAS server.
Although it has some out-of-the-box capabilities like WNA and X509 certificate support,
it can be quite hard to set up an authentication scheme just the way you (or your customers) like it.
Using a case study, this presentation discusses how you can extend Oracle’s Single
Sign On (SSO) server to your needs. It will discuss :
- Integration & authentication with smartcard passports (eID)
- Authentication with digital certificates
- Implementing fallback authentication schemes
- Integration with SSL terminators and reverse proxies
- DIY federated authentication
- writing your own SSO plugin
The solutions presented are part of AXI NV/BV's portfolio.
Freshworks Rethinks NoSQL for Rapid Scaling & Cost-EfficiencyScyllaDB
Freshworks creates AI-boosted business software that helps employees work more efficiently and effectively. Managing data across multiple RDBMS and NoSQL databases was already a challenge at their current scale. To prepare for 10X growth, they knew it was time to rethink their database strategy. Learn how they architected a solution that would simplify scaling while keeping costs under control.
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Slide links:
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- https://docs.lumberjack.rareloop.com
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---
Often WordPress themes are not easy to change, maintain or fun to work on. This can rule WordPress out as a viable option for bespoke, non-trivial websites.
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This document provides instructions on converting a Photoshop (PSD) design into a WordPress theme. It explains that you should visualize how the PSD design will translate to HTML elements like headers, menus, content areas, etc. before beginning to code. Key areas covered include using an existing framework versus coding from scratch, including necessary WordPress functions and files, and organizing code into templates, functions.php, and other standard WordPress theme files. The goal is to understand the technical structure of the design and properly structure the theme code.
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Submit form with Ajax and jQuery without reloading page.pdfBe Problem Solver
Howdy friends, these days when people fill out a form on webpages they want an instant response!
So today in this article, we will show you how to submit the form with Ajax and jQuery without reloading the page. Yup! your form will be submitted but the webpage won’t refresh at all. To achieve this we will use our trusted jQuery and Ajax.
But Ajax is the key here!
Because it allows us to send and receive data without refreshing our webpage. Don’t worry I will explain it in detail in the next section.
You can use our code in combination with PHPMailer or Sendgrid to send emails as well. And send emails without any refresh or reload. Meaning with Ajax form submission without refresh, you can build applications where you can submit the form and display the results on the same page.
Anyway, let’s learn the basics first of jQuery and Ajax.
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Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
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Monitoring and Managing Anomaly Detection on OpenShift
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- Get to know Prometheus, an open-source monitoring and alerting toolkit, and its application in monitoring edge devices.
8. Monitoring Application Metrics with Prometheus
- Detailed instructions on setting up Prometheus to monitor the performance and health of your anomaly detection system.
9. What is Camel K?
- Introduction to Camel K, a lightweight integration framework built on Apache Camel, designed for Kubernetes.
10. Configuring Camel K Integrations for Data Pipelines
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11. What is a Jupyter Notebook?
- Overview of Jupyter Notebooks, an open-source web application for creating and sharing documents with live code, equations, visualizations, and narrative text.
12. Jupyter Notebooks with Code Examples
- Hands-on examples and code snippets in Jupyter Notebooks to help you implement and test anomaly detection models.
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Introduction of Cybersecurity with OSS at Code Europe 2024Hiroshi SHIBATA
I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
Fueling AI with Great Data with Airbyte WebinarZilliz
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1. User Login in PHP with Session
& MySQL
by Pawan
Table of Contents
● Introduction
● Forging a clean UI with Bootstrap for User Login
● Build and Hook up your MySQL database
● Fun Logic of PHP User Login System
● Conclusion
Introduction
User login functionality in a website is a pretty simple but compulsory
component. In all modern dynamic websites, the client asks for a login and
admin panel so that they can do basic tasks.
2. Today I will give you a simple and clean-looking login system with PHP and
MySQL. We will maintain the login tracking with PHP Sessions and let
Bootstrap make us a clean UI Design.
Why PHP? Because despite being ancient. As some developers believe.
PHP is fundamental to our web.
Around 81.7% of the websites on the web use PHP as their server-side
language.
And why not PHP?
PHP powers famous CMS(Content Management System) like WordPress and
Joomla. Open Source OOPs frameworks like Laravel and CodeIgniter. And
numerous others.
Reason: PHP is simple and clean to write. Easy-to-understand and
beginner-friendly. Vast community support and adaptability toward developer
needs.
Let’s what will do in this simple project:
● User Login Design with Bootstrap 5
● PHP code for MySQL Database
● Logic to process the login request
● Throw errors if the wrong entry of login credentials
● Redirect to Admin if successful request
● Conclusion
Forging a clean UI with Bootstrap for
User Login
3. First, we create index.php and write our UI design with the latest Bootstrap 5.
We added Google Fonts Poppins for making our UI look eye-catching.
Whenever possible, we relied on CDN links because it keeps our code
lightweight and less resource intensive.
index.php file
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,
initial-scale=1">
<!-- CSS -->
<link
href="https://fonts.googleapis.com/css2?family=Poppins&display=swa
p" rel="stylesheet">
<link
href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootst
rap.min.css" rel="stylesheet">
<link rel="stylesheet" href="assets/css/style.css">
<title>Login</title>
5. </div>
<button type="submit" class="btn btn-primary"
name="login">Login</button>
</form>
</div>
</div>
</div>
<!-- JS -->
<script
src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstra
p.bundle.min.js"></script>
</body>
</html>
Next, we do simple CSS styling in our style.css file. To make our plain
background something fun to look at, I have added a small background image
in webp format. Also, coded in background color as a backup in the case of
legacy browsers that do not support webp format yet.
* {
margin: 0;
padding: 0;
6. box-sizing: border-box;
}
body {
font-family: 'Poppins', sans-serif;
background: #f1f1f1;
background: url("../img/email-pattern.webp");
}
Build and Hook up your MySQL
database
Before we start preceding the actual PHP logic part. We need a database for
keeping a record of our login users. And the best choice of course is
MySQL–why because it’s free and open source like PHP. Not to mention very
beginner friendly.
First, go to your PHPMyAdmin whether you’re working online or in the local
environment. And set up your database with a relevant name to your project.
7. Create Database in PHPMyAdmin in localhost
After the Database is created. Setup a table named users which has mainly
four columns we need: id, email, password, and active. We can also execute
the below SQL code in the PHPMyAdmin SQL tab and this will generate our
table “users”.
CREATE TABLE `users` (
`id` int(5) NOT NULL,
`email` varchar(255) NOT NULL,
`password` varchar(255) NOT NULL,
`active` tinyint(1) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
8. Create a table in the database by running SQL code
Now, we can insert user login details by running the following SQL code. We
are hard coding this now. But we can create a PHP code for the signup
process later. First, we must deploy our user login system.
INSERT INTO `users` (`id`, `email`, `password`, `active`) VALUES
(1, 'test@gmail.com', '1234', 1);
Next in line, we hook up a connection between MySQL and PHP:
connection.php
<?php
$servername = "localhost"; // Enter Your severname here
$username = "root"; // Enter your MySQL database username here
$password = ""; // // Enter your MySQL database password here
$dbname = "ld_call"; // Enter your Database Name here
9. $conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
Now our UI and database are set. Next, we tackle our User Login process
head-on! Yay! I am excited!
Fun Logic of PHP User Login System
We can all be intimated by logic in programming languages. I myself
remember dreading the C++ practical exams in school. It was so
pain-wrecking process to write the simplest logic. But it is mostly because– we
don’t try to understand why we are writing the code.
Of course, you say to run our program and accomplish something.
But breaking it down into small chunks and bits of pieces is more useful. Let’s
understand with current logic.
We need to determine the login process. But before you write any code. Let’s
write pseudo-code.
What the heck is pseudo-code?
Good question! It’s not actual code. When we write small pieces of notes we
as coders for simplifying the complex logic processes — we call them
pseudo-code.
10. Sure, our login process is pretty straightforward. And we could code it without
effort.
But if you get in habit of writing pseudo-code before writing a single line of
actual code. You will fall in love with coding. And even page-long logic will
seem like child-play for you.
Pseudo Code for User Login Process:
1. The login form is filed by the user and submit is clicked.
2. Details arrive at the logic part. Where first we clean them for any
unintentional garbage like backslashes, whitespace, etc.
3. Sanitized login details are stored and then compared with values
inside our database for verification.
4. If no match then we pop up an error message for the user.
5. If details match up, we redirect the user to the admin page.
6. Also, code a session that tracks our logged-in user.
7. Set up a logout process that removes our session.
Avoid creating too many pieces when writing pseudo code and vice versa
don’t make too few of them.
Now, let us jump to the actual code:
<?php
require_once("connection.php");
session_start();
function santize($data)
{
$data = trim($data);
11. $data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
if (isset($_POST['login'])) {
$email = santize($_POST['email']);
$password = santize($_POST['password']);
$sql = "SELECT id FROM users WHERE email = '$email' AND password
= '$password' AND active = 1";
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
$_SESSION['login_active'] = [$email, $password];
header("Location: admin.php");
exit();
} else {
$_SESSION['errors'] = "Login Error! Check Email & Password";
header("Location: index.php");
12. exit();
}
}
?>
Before we go to the admin part. Add this snippet block for showing user login
errors. This is to implement a temporary PHP session. Paste this code in a
place where you want to show errors. Mind UI though.
<?php if (isset($_SESSION['errors'])) : ?>
<div class="alert alert-warning alert-dismissible fade
show" role="alert">
<?php
$message = $_SESSION['errors'];
unset($_SESSION['errors']);
echo $message;
?>
<button type="button" class="btn-close"
data-bs-dismiss="alert" aria-label="Close"></button>
</div>
<?php endif; ?>
13. Insert this snippet code of PHP at top of our index.php and create admin.php
which will be displayed in case of a successful login attempt.
admin.php
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,
initial-scale=1">
<!-- Bootstrap CSS -->
<link
href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootst
rap.min.css" rel="stylesheet">
<link rel="stylesheet" href="assets/css/style.css">
<title>Admin</title>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
15. <h1>Welcome to Admin</h1>
</div>
<!-- Option 1: Bootstrap Bundle with Popper -->
<script
src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstra
p.bundle.min.js"></script>
</body>
</html>
Now we can insert PHP code at top of admin.php which checks whether you
are login session is active. Without this everyone will be able to access your
admin file. So do put this code above your admin.php Html code.
Note: You can use this code on other pages which
need to secure by the login process.
<?php
require_once("connection.php");
session_start();
if (!isset($_SESSION['login_active'])) {
header("Location: index.php");
exit();
16. }
?>
Now we are pretty much ready to deploy our user login functionality at any
server or localhost.
Conclusion
Now that we have the seen whole process of building a user login system with
PHP, MySQL, and Bootstrap 5. You can just copy the code and deploy it as
needed. Below you download the whole code from my GitHub repository. It
also includes the database file of SQL– so don’t forget to import it if using that
code.
Download Code at Github
And if you are looking for an amazing free code editor. Check out our Why VS
code in the 2022 post.
Lastly if, you think our code helped you solve a need or problem then do
comment and follow us on GitHub and social media. Have fun guys!
Problem Solver is signing off! Ta-da.