Passing Parameters

Passing parameters is a common requirement in web applications, and CodeIgniter provides a neat and simple way to handle it. In this tutorial, we will see how to pass parameters in CodeIgniter.

Syntax

The syntax to pass parameters in CodeIgniter is as follows:

$this->load->view('viewname', $data);

$data is an array of parameters that you want to pass.

Example

Let's assume we have a controller named Welcome.php. Here is an example of how we can pass parameters to the view:

class Welcome extends CI_Controller {

   public function index()
   {
      $data['title'] = "Example Title";
      $data['body'] = "Welcome to our website";

      $this->load->view('welcome_message', $data);
   }
}

In the above example, we have defined a $data array with two parameters: title and body. We are passing this array to the welcome_message view.

In the welcome_message view, we can access these parameters like this:

<h1><?php echo $title; ?></h1>
<p><?php echo $body; ?></p>

Explanation

In the example above, we defined an array of parameters ($data) in the controller method. Then, we passed this array to the view by calling the load->view() function.

In the view file, we used the parameter variables ($title and $body) to display data dynamically.

Use

Passing parameters in CodeIgniter is a necessary practice when we want to display dynamic data in our views. This method is secure and simple to use.

Important Points

• The parameters passed can be accessed in the view using the variable names of the array keys.
• Parameters can be passed to any view from any controller method.
• The method must load the view with the $data array as the second parameter.

Summary

Passing parameters is one of the fundamental concepts in web application development. In CodeIgniter, it is done via an array, which is then passed to the view from the controller. These parameters can then be accessed in the view using their corresponding variable names. Passing parameters is an essential practice that helps display dynamic data in our views.