How To Create Bar Chart In Codeigniter With AmChart

In this article, we will explain to you how to Create Bar Chart In Codeigniter in AmChart. so we will give you a simple example of how to Create Bar Chart In Codeigniter using AmCharts. today we will fetch data into MySQL, and plot a bar graph.

There are many types of charts provided by AmCharts, like a bar charts, area chart, line chart, pie chart, etc. but here we use a bar chart.

We can easily integrate AmCharts with TypeScript, PHP, Angular, and React. here In this article, we are using AmCharts version 3. so you can see below the following steps.

Overview

Step 1: Create a Database in table
Step 2: Connect to Database
Step 3: Create Controller
Step 4: Create View File

Step 1: Create Database in table
In this step, we have to create a table in the database, so we will create a database using the below code.

CREATE TABLE `login_history` (
  `id` int(11) NOT NULL,
  `user_id` int(11) NOT NULL,
  `login_date` timestamp NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(),
   PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 AUTO_INCREMENT=1;

CREATE TABLE `login_history` (

`id` int(11) NOT NULL,

`user_id` int(11) NOT NULL,

`login_date` timestamp NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(),

PRIMARY KEY (`id`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 AUTO_INCREMENT=1;

Step 2: Connect to Database
Go to the config folder and open database.php file some changes in this file like hostname, database username, database password, and database name.

$db['default'] = array(
	'dsn'	=> '',
	'hostname' => 'localhost',
	'username' => 'root',
	'password' => '',
	'database' => 'enter here database name',
	'dbdriver' => 'mysqli',
	'dbprefix' => '',
	'pconnect' => FALSE,
	'db_debug' => (ENVIRONMENT !== 'production'),
	'cache_on' => FALSE,
	'cachedir' => '',
	'char_set' => 'utf8',
	'dbcollat' => 'utf8_general_ci',
	'swap_pre' => '',
	'encrypt' => FALSE,
	'compress' => FALSE,
	'stricton' => FALSE,
	'failover' => array(),
	'save_queries' => TRUE
);

$db['default'] = array(

'dsn' => '',

'hostname' => 'localhost',

'username' => 'root',

'password' => '',

'database' => 'enter here database name',

'dbdriver' => 'mysqli',

'dbprefix' => '',

'pconnect' => FALSE,

'db_debug' => (ENVIRONMENT !== 'production'),

'cache_on' => FALSE,

'cachedir' => '',

'char_set' => 'utf8',

'dbcollat' => 'utf8_general_ci',

'swap_pre' => '',

'encrypt' => FALSE,

'compress' => FALSE,

'stricton' => FALSE,

'failover' => array(),

'save_queries' => TRUE

);

Step 3: Create Controller
In this step, we will create an Amchart.php file in the “application/controller” directory and paste the below code in this controller. here we will fetch the last 10 months of data from the database and month-wise count login users. that data will be pass in an Amchart and creating bar graphs.
application/controller/Amchart.php

<?php
 
defined('BASEPATH') OR exit('No direct script access allowed');
 
class Amchart extends CI_Controller {
 
    public function __construct() {
        parent::__construct();
    // load model
        $this->load->database();
        $this->load->helper(array('url','html','form'));
    }       
     public function bar_chart() {
      $query =  $this->db->query('SELECT DATE_FORMAT(login_date, "%Y-%m-%d") AS `date`, COUNT(`login_date`) as count FROM login_history WHERE `login_date` >= NOW() - INTERVAL 10 MONTH GROUP BY MONTH(`login_date`) ORDER BY `login_date` ASC'); 
      $records = $query->result_array();
      $data = [];
      foreach($records as $row) {
		$data[] = ['date' => date('Y-m-t',strtotime($row['date'])), 'count' =>$row['count']];
      }
      $data['chart_data'] = json_encode($data);
      $this->load->view('bar_chart',$data);
    }   
}
?>

<?php

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

class Amchart extends CI_Controller {

public function __construct() {

parent::__construct();

// load model

$this->load->database();

$this->load->helper(array('url','html','form'));

}

public function bar_chart() {

$query = $this->db->query('SELECT DATE_FORMAT(login_date, "%Y-%m-%d") AS `date`, COUNT(`login_date`) as count FROM login_history WHERE `login_date` >= NOW() - INTERVAL 10 MONTH GROUP BY MONTH(`login_date`) ORDER BY `login_date` ASC');

$records = $query->result_array();

$data = [];

foreach($records as $row) {

$data[] = ['date' => date('Y-m-t',strtotime($row['date'])), 'count' =>$row['count']];

}

$data['chart_data'] = json_encode($data);

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

}

Step 4: Create View File
So finally, we will create the bar_chart.php file in the “application/views/” directory.
application/views/bar_chart.php

<!DOCTYPE html>
<html>
	<head>
		<title>How To Create Bar Chart In Codeigniter With AmChart - XpertPhp</title>
		<script src="https://www.amcharts.com/lib/3/amcharts.js"></script>
		<script src="https://www.amcharts.com/lib/3/serial.js"></script>
		<script src="https://www.amcharts.com/lib/3/themes/light.js"></script>
		<script src="https://www.amcharts.com/lib/3/plugins/export/export.min.js"></script>
		<link rel="stylesheet" href="https://www.amcharts.com/lib/3/plugins/export/export.css" type="text/css" media="all" />
	</head>
	<body>
		<div id="chartdiv" style="width: 900px; height: 800px;"></div>
		<script>
		var chartData = JSON.parse(`<?php echo $chart_data; ?>`);
            try {
				  var chart = AmCharts.makeChart( "chartdiv", {
				  "type": "serial",
				  "theme":"light",
				  "dataProvider": chartData,
				  "valueAxes": [ {
					"gridColor": "#FFFFFF",
					"gridAlpha": 0.2,
					"dashLength": 0
				  } ],
				  "gridAboveGraphs": true,
				  "startDuration": 1,
				  "graphs": [ {
					"balloonText": "[[category]]: <b>[[value]]</b>",
					"fillAlphas": 0.8,
					"lineAlpha": 0.2,
					"type": "column",
					"valueField": "count"
				  } ],
				  "chartScrollbar": {
					"graph": "g1",
					"scrollbarHeight": 60,
					"backgroundAlpha": 0,
					"selectedBackgroundAlpha": 0.1,
					"selectedBackgroundColor": "#888888",
					"graphFillAlpha": 0,
					"graphLineAlpha": 0.5,
					"selectedGraphFillAlpha": 0,
					"selectedGraphLineAlpha": 1,
					"autoGridCount": true,
					"color": "#AAAAAA",
					"oppositeAxis": false
                    },
				  "chartCursor": {
					"categoryBalloonEnabled": false,
					"cursorAlpha": 0,
					"zoomable": false
				  },
				  "categoryField": "date",
				  "categoryAxis": {
					"gridPosition": "start",
					"gridAlpha": 0,
					"tickPosition": "start",
					"tickLength": 20
				  },
				  "export": {
					"enabled": true
				  }
				} );           
            }
            catch( e ) {
              console.log( e );
            }
		</script>		
	</body>
</html>

<!DOCTYPE html>

<html>

<head>

<title>How To Create Bar Chart In Codeigniter With AmChart - XpertPhp</title>

</head>

<body>

var chartData = JSON.parse(`<?php echo $chart_data; ?>`);

try {

var chart = AmCharts.makeChart( "chartdiv", {

"type": "serial",

"theme":"light",

"dataProvider": chartData,

"valueAxes": [ {

"gridColor": "#FFFFFF",

"gridAlpha": 0.2,

"dashLength": 0

} ],

"gridAboveGraphs": true,

"startDuration": 1,

"graphs": [ {

"balloonText": "[[category]]: <b>[[value]]</b>",

"fillAlphas": 0.8,

"lineAlpha": 0.2,

"type": "column",

"valueField": "count"

} ],

"chartScrollbar": {

"graph": "g1",

"scrollbarHeight": 60,

"backgroundAlpha": 0,

"selectedBackgroundAlpha": 0.1,

"selectedBackgroundColor": "#888888",

"graphFillAlpha": 0,

"graphLineAlpha": 0.5,

"selectedGraphFillAlpha": 0,

"selectedGraphLineAlpha": 1,

"autoGridCount": true,

"color": "#AAAAAA",

"oppositeAxis": false

"chartCursor": {

"categoryBalloonEnabled": false,

"cursorAlpha": 0,

"zoomable": false

"categoryField": "date",

"categoryAxis": {

"gridPosition": "start",

"gridAlpha": 0,

"tickPosition": "start",

"tickLength": 20

"export": {

"enabled": true

}

} );

}

catch( e ) {

console.log( e );

}

</script>

</body>

</html>

We think would you like this article, so you can click on the “Show Demo” button and you can see this demo article.

Show Demo