PHP Codeigniter 4 Google Bar & Line Charts Tutorial

Codeigniter 4 , PHP 8 , Codeigniter , PHP




PHP Codeigniter 4 Google Bar & Line Charts Tutorial

Hi guys,

Today i will explained Google Bar & Line Charts Example in php Codeigniter 4. This example is so easy to use in Codeigniter 4.

Before we move further, let’s quickly understand what a line chart is.

A line graph is also known as a line chart, primarily a curve chart shows data intuitively as a series of data points called ‘markers’ joined by straight-line portions.

So let's start to the example.

Step 1: Install New Codeigniter App

Codeigniter Project Project install in a two ways.



composer create-project codeigniter4/appstarter project_name


Step 2: Make Database Connection

Open the app/Config/Database.php, and insert database name, username and password into the file.

public $default = [

'DSN' => '',

'hostname' => 'localhost',

'username' => 'root',

'password' => '',

'database' => 'codeigniter_db',

'DBDriver' => 'MySQLi',

'DBPrefix' => '',

'pConnect' => false,

'DBDebug' => (ENVIRONMENT !== 'development'),

'cacheOn' => false,

'cacheDir' => '',

'charset' => 'utf8',

'DBCollat' => 'utf8_general_ci',

'swapPre' => '',

'encrypt' => false,

'compress' => false,

'strictOn' => false,

'failover' => [],

'port' => 3306,


Step 3: Create Table & Insert Data SQL

Then next step to create table and insert to the few records.

CREATE TABLE `product` (

`id` int(11) NOT NULL COMMENT 'Primary Key',

`name` varchar(255) NOT NULL COMMENT 'name',

`sell` varchar(55) NOT NULL COMMENT 'sell',

`created_at` varchar(30) NOT NULL COMMENT 'created at'

) ENGINE=InnoDB DEFAULT CHARSET=latin1 COMMENT='Atomic database';

INSERT INTO `product` (`id`, `name`, `sell`, `created_at`) VALUES

(1, 'Coca Cola', '5000', '2021-05-01'),

(2, 'Pepsi', '7000', '2021-05-02'),

(3, 'Coke Zero', '19000', '2021-05-03'),

(4, 'Pepsi Max', '1500', '2021-05-04'),

(5, 'Diet Coke', '19000', '2021-05-05'),

(6, 'Pepsi Light', '3000', '2021-05-06'),

(7, 'Gatorade', '22000', '2021-05-07');

Step 4: Create Chart Controller

You have to generate a new controller template, right after that add the following code into the app/Controllers/GColumnChartController.php file.


namespace App\Controllers;

use CodeIgniter\Controller;

class GColumnChartController extends Controller


public function index() {

return view('chart');


public function initChart()


$db = \Config\Database::connect();

$builder = $db->table('product');

$query = $builder->select("COUNT(id) as count, sell as s, DAYNAME(created_at) as day");

$query = $builder->where("DAY(created_at) GROUP BY DAYNAME(created_at), s")->get();

$record = $query->getResult();

$products = [];

foreach($record as $row) {

$products[] = array(

'day' => $row->day,

'sell' => floatval($row->s)



$data['products'] = ($products);

return view('chart', $data);



Step 5: Formulate New Route

next to make the route for showing charts, you need to go to app/Config/Routes.php and define the given below routes in the file


$routes->get('/show-google-charts', 'GColumnChartController::initChart');

Step 6: Add Line Chart in View

Then Next, you need to create the view file, where you will constitute the chart using the google chart js, bootstrap and most importantly the data coming from the database.

Add code into app/Views/chart.php file.

<!DOCTYPE html>

<html lang="en">


<meta charset="UTF-8">

<meta name="viewport" content="width=device-width, initial-scale=1.0">

<title>Google Bar & Column Charts in Codeigniter</title>

<link rel="stylesheet" href="[email protected]/dist/css/bootstrap.min.css">



<div class="container">

<div class="mb-5 mt-5">

<div id="GoogleLineChart" style="height: 400px; width: 100%"></div>


<div class="mb-5">

<div id="GoogleBarChart" style="height: 400px; width: 100%"></div>



<script type="text/javascript" src=""></script>


google.charts.load('current', {'packages':['corechart', 'bar']});



// Line Chart

function drawLineChart() {

var data = google.visualization.arrayToDataTable([

['Day', 'Products Count'],


foreach ($products as $row){

echo "['".$row['day']."',".$row['sell']."],";

} ?>


var options = {

title: 'Line chart product sell wise',

curveType: 'function',

legend: {

position: 'top'



var chart = new google.visualization.LineChart(document.getElementById('GoogleLineChart'));

chart.draw(data, options);


// Bar Chart


function drawBarChart() {

var data = google.visualization.arrayToDataTable([

['Day', 'Products Count'],


foreach ($products as $row){

echo "['".$row['day']."',".$row['sell']."],";




var options = {

title: ' Bar chart products sell wise',

is3D: true,


var chart = new google.visualization.BarChart(document.getElementById('GoogleBarChart'));

chart.draw(data, options);





Step 7: Start CI Project

In this last step, you have to open the terminal, type command to run the application.

php spark serve

Then next run the url in your browser.



Now you can check your own.

I hope it can help you...

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