How To Work with cURL POST Request in Codeigniter 4

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Inside this article we will see the concept i.e How To Work with cURL POST Request in Codeigniter 4 Example Tutorial. Article contains the classified information about Executing cURL POST Request to Call API in CodeIgniter.

If you are looking for a solution i.e how to work with APIs using HTTP cURL POST request in codeigniter then this article will help you a lot for this. Tutorial is super easy to understand and implement it in your code as well.

Read More: Codeigniter 4 cURL GET Request Example Tutorial

Let’s get started.

CodeIgniter 4 Installation

To create a CodeIgniter 4 setup run this given command into your shell or terminal. Please make sure composer should be installed.

$ composer create-project codeigniter4/appstarter codeigniter-4

Assuming you have successfully installed application into your local system.

Environment (.env) Setup

When we install CodeIgniter 4, we will have env file at root. To use the environment variables means using variables at global scope we need to do env to .env

Either we can do via renaming file as simple as that. Also we can do by terminal command.

Open project in terminal

$ cp env .env

Above command will create a copy of env file to .env file. Now we are ready to use environment variables.

Enable Development Mode

CodeIgniter starts up in production mode by default. You need to make it in development mode to see any error if you are working with application.

Open .env file from root.

# CI_ENVIRONMENT = production

 // Do it to 
CI_ENVIRONMENT = development

Now application is in development mode.

What is CURLRequest Class?

The CURLRequest class in CodeIgniter 4 is a lightweight HTTP client based CURL that allows us to communicate to other websites and web servers. It can be used to get the contents of a webpage, retrieve image, or communicate with an API, many other things.

Read More: How To Check Laravel Application Environment Tutorial

Load CURLRequest in Application

The library can be loaded either manually or through the Services class.

$curl = \Config\Services::curlrequest();


$curl = service('curlrequest');

Create Controller (cURL POST Request)

Back to project terminal and run this command to create a controller file.

$ php spark make:controller Data --suffix

Above command will create a file i.e DataController.php inside /app/Controllers folder.

Open DataController.php and write this code into it.


namespace App\Controllers;

use App\Controllers\BaseController;

class DataController extends BaseController
	public function index()
		$curl = service('curlrequest');

		$posts_data = $curl->request("POST", "", [
			"headers" => [
				"Accept" => "application/json"
			"form_params" => [
				"username" => "sanjay_owt",
				"name" => "Sanjay Kumar",
				"email" => "",
				"gender" => "Male",
				"designation" => "Web Developer",
				"phone_number" => "1234567895",
				"complete_address" => "Sample Address"

		echo "<pre>";

Create Route

Open Routes.php file from /app/Config folder. Add this route into it.


$routes->get("employees", "DataController::index");


Application Testing

Open project to terminal and type the command to start development server

$ php artisan serve

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To Save Data via API

URL: http://localhost:8080/employees

We hope this article helped you to learn Codeigniter 4 cURL POST Request Example Tutorial in a very detailed way.

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