PHP Variables to JavaScript Variables in CodeIgniter

Last updated on December 2, 2022

Often, you’ll find yourself in situations, where you want to pass some server-side string/array/whatever to your JavaScript. Traditionally, this can be a bit of a pain – especially as your app grows.

“Transform PHP Vars to JavaScript” is a CodeIgniter library and it simplifies the process drastically. And it is developed based on “PHP-Vars-To-Js-Transformer” it is developed by JeffreyWay.

How to install

Download the files add put PHPtoJS.php class in your library folder application\libraries\PHPtoJs.php. Now load the library locally or globally.

Locally

  $this->load->library('PHPtoJS');

Globally

Open your autoload.php file which is located at application\config\autoload.php

$autoload['libraries'] = array('PHPtoJS');

After loading the library, you may use your controllers as shown below.

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Welcome extends CI_Controller {


    public function index()
    {
         $this->load->library('PHPtoJS',['namespace' => 'arjun']);
            $this->phptojs->put([
                'foo' => 'bar',
                'age' => 29
            ]);

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

Final step – in your layout page or view page add this line, which will print the JavaScript variables.

 echo $this->phptojs->getJsVars(); 

That is it.