Browse Author: Jithendar Dhumal

Implement CAPTCHA In CodeIgniter

CAPTCHA is a randomly generated string (or a set of images) that appears when verification is required. It is an essential requirement for cutting down the spam at a website. In many cases, it is the only line of defense a website has against bots that spam websites.

CAPTCHA in CodeIgniter

In this tutorial, I will demonstrate how you can easily implement CAPTCHA in your CodeIgniter projects.

Create Controller

The process starts with the creation of the Controller.

Create a file named captcha.php in the Controller folder. Open the file in your code editor and add the following code to it:

Code Explanation

Here is a brief explanation of the various components of the Controller code:

Load CAPTCHA Helper

Form Submission

CAPTCHA Configuration

Refresh CAPTCHA

Create the View

The next step is the creation of the View. for this, create a folder in the View folder. Go into the folder and create another folder with the name captcha. inside this folder, create a file named index.php. Add the following code to the file:

Another Method of Calling CAPTCHA with Validation

Here is another method that is used to call in CAPTCHA through CodeIgniter helper and then validate it.

Top 5 PHP Frameworks of 2017

List of top 5 PHP Frameworks of 2017

Before beginning the list of top 5 PHP frameworks of 2017, PHP is one of the most favored server-side scripting languages known for its simplicity, PHP frameworks complement PHP, by providing developers with some pre-built modules, a platform to create robust, reusable components, and by enabling faster development cycles.

PHP frameworks give the users a basic structure, with some pre-built modules to develop robust web applications faster. These frameworks enforce coding standards and development guidelines hence standardizing the process and stabilizing the product.

PHP frameworks use Model View Controller(MVC) architecture, where the development of the business logic is independent of both the underlying data and the overlaying presentation view. MVC helps developers to focus on their specific areas without worrying if their code will adversely affecting the development of the other modules or not. This breaking up of the development process into independent modules increases the speed of the entire development process and improves the stability and quality of the product.

Advantages of using frameworks

  • Rapid development using the libraries and tools provided by the framework
  • Easy to upgrade and maintain the developed applications
  • Excellent community support
  • Security features such as Input filtering and Output encoding

Top 5 PHP frameworks of 2017

There are a wide variety of PHP frameworks, many of them are open source frameworks. The most popular open-source PHP frameworks are:

google trends

  1. Laravel

As far as frameworks go, Laravel takes the cake with the most number of personal and professional users. The 2015’s Sitepoint survey indicates that excellent documentation, solid features and a thriving, growing support community has made Laravel a clear winner in the space of PHP framework. Google trends on PHP frameworks show similar results.

  1. Symfony

One of the older players, Symfony is considered to be a stable base for many other newer frameworks including Laravel. The quick adaptability and widely used documentation of Symfony makes it one of the most dependable PHP frameworks.

  1. CodeIgniter

A simple, powerful PHP framework, CodeIgniter is known for its flexibility and hassle-free installation. CodeIgniter is supposed to have an easy learning curve thus making it the best choice for beginners.

  1. CakePHP

One of the oldest frameworks, CakePHP has retained its strong user base and has continued to grow. It also boasts of an impressive portfolio consisting of brands such as BMW and Express.

  1. Zend Framework

Zend is considered to be a very stable and robust framework recommended for big, enterprise-level projects. It has a wide variety of features which facilitates the development of quality applications for enterprise clients.

PHP for the Internet of Things

Analysts claim the connected devices to reach the mark of 6.5 billion by the starting of 2017. This makes PHP and IOT go hand in hand. Thanks to icicle, one can write asynchronous code using synchronous coding techniques in PHP. It means that now the PHP code is able to run several tasks by using the same script. Methods of asynchronous programming provide better data exchange between connected gadgets. Some hardware platforms such as Arduino already support PHP, and you can control Arduino board with your PHP-based script. There is also a possibility to build a PHP application that uses GPS data gathered from an IOT device. Like the GPS sensor on your Android phone can send its location to the Bluemix cloud, and the PHP application is able to publish this data on your website.


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