How to add page numbers in PDF in CodeIgniter
Step 1: Install CodeIgniter 4 To install CodeIgniter 4 we can install it through Composer or download CodeIgniter 4 directly here: Install via composer: Step 2: Change CodeIgniter Environment CodeIgniter is the default environment product, a security feature to add security when settings go wrong when it’s live. To change the environment, we will rename or…
Dealing with deprecations
1. Deprecations are helpful It’s a common complaint: “why do my PHP scripts break with minor version updates??”. And quite right: PHP has a tendency to add deprecation notices in minor releases, which tend to be audibly present when upgrading a project. It’s important to understand what deprecations are about: they aren’t errors, they are notices….
How to check the PHP version
Newer PHP versions come with more features and improvements while deprecating some obsolete features. Old PHP codes might not work with more recent PHP versions and vice versa. It is, therefore, essential to use the correct PHP version for your code. You can check the PHP version on your system by running the php command from the command line. There are also some PHP functions that you can use…
Common Mistakes with Conditionals
This article will go over some mistakes that are easy to make when writing more complex programs with conditional. Mistake 1: Not treating expressions as distinct:Let’s say we want to print something if your variable $num is equal to 1 or 2 or 3. Why doesn’t the following code work? $num = 5; if ($num === 1 || 2 || 3) {…
PHP 8: Attributes
As of PHP 8, we’ll be able to use attributes. The goal of these attributes, also known as annotations in many other languages, is to add metadata to classes, methods, variables, and whatnot; in a structured way. The concept of attributes isn’t new at all, we’ve been using docblocks to simulate their behavior for years…
How to Reverse A String with JavaScript
The inverse string problem is a general algorithm problem. In this article, we will consider four JavaScript solutions for that. Reversing a string is, well, reversing a string. Okay, here’s the problem statement: Write a function that reverses a string. If you pass “Teach” to the function, it should return “hcaeT” and “listen” should become…
How to check if a customer is logged in to Magento 2 or not?
There are two ways by which you can check if a customer is logged in or not: 1) By using Object Manager It is always a bad practice to use ObjectManager directly. 2) By Injecting Class (Dependency Injection) As said earlier, it is one of the worst practices to use the ObjectManager directly. Therefore an…
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How to Deploy or Host your ReactJS App in cPanel
This tutorial assumes you already have a cPanel hosting service purchased and a domain name registered. If yes, Let’s go straight to the steps (If No, You can comment, I can give you steps on how to get a domain and hosting service) Step 1. Using the Terminal/CMD in your project directory, create a react…
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Best JavaScript Minifying Tools
Several JavaScript minification technologies are used by developers to reduce code size and improve performance. Each developer, on the other hand, has their own preferences and uses a different tool. There are a lot of JavaScript minification tools out there, and each one has its own set of advantages and disadvantages, so you’ll have to…
Enable or Disable SSH Root Login Access in Linux
SSH Root user login access is enabled in any system by default. Or we are asked while installing a system. that you have to enable or disable ssh root user login access. And you never know how to enable and disable ssh root user login access. So in this tutorial, we will show you how…
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How to increase browser zoom level on page load with CSS?
Sometimes, we want to increase the browser zoom level on page load with CSS. In this article, we’ll look at how to increase browser zoom level on page load with CSS. To increase browser zoom level on page load with CSS, we set the zoom property. For instance, we write to set zoom to 2 on the zoom class. Then the…
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How to Define Global Variables for Twig Templates in Symfony 6
Sometimes we may need to inject the same variable in all the Twig templates. It can be done on each controller by passing a variable to template. However, it is not a good solution. This tutorial shows how to define global variables for Twig templates in Symfony 6 application. Global variables for Twig templates can…
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Important most things you should know about JSX
What JSX is JSX is a syntax extension for JavaScript. Basically, it extends JavaScript so that constructs like HTML/XML can be used with JavaScript. It allows developers to use HTML syntax to compose JavaScript components. This makes it possible to have a clear and familiar syntax for defining DOM tree structures with attributes. Although it…
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How to Search Recently Modified Files in Linux
This post will help you to find recently modified files in Linux via the command line. The find command works with, defining duration in Minutes or Days. The minutes are defined with -mmin and the day’s value can be defined with -mtime You can also define the search criteria to find files modified within or before the specified…
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How To Install Nginx, PHP on Ubuntu 22.04
Now, Open a terminal and start following the below steps. Step 1 . Install Ngnix. our system is updated now we will install Nginx. Ngnix is installed, Now we will configure the firewall, we will allow port 80 and port 443. Now open your IP in the web browser you will see the output, If…
How do sum values from an array of key-value pairs in JavaScript?
To fix getFullyear() is not a function with JavaScript, we should be called getFullYear instead. For instance, we write to call start.getFullYear to return the 4-digit year number of the start date. Conclusion To fix getFullyear() is not a function with JavaScript, we should be called getFullYear instead.
Understanding State in React Components
A difference between state and props is that while the data stored by props are fixed throughout their lifetime, state store data that can be changed over time. This change can be in response to user actions, network responses, or anything. Also, while props are set by the parent component, state is changed internally by the component itself. A component’s state should be considered private data. This…
HTML Basic Examples
In this chapter, we will show some basic HTML examples. Don’t worry if we use tags you haven’t learned about yet. HTML Documents All HTML documents must start with a document type declaration: <!DOCTYPE html>. The HTML document itself begins with <html> and ends with </html>. The visible part of the HTML document is between <body> and </body>.
HTML Tutorial
HTML is the standard markup language for Web pages. With HTML you can create your own Website. HTML is easy to learn – You will enjoy it!
How to change the link color of the current page with CSS?
Sometimes, we want to change the link color of the current page with CSS. In this article, we’ll look at how to change the link color of the current page with CSS. To change the link color of the current page with CSS, we set the color background-color properties. For instance, we write to set the text color…
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