In this article, we will explain to you how to Implement Google bar Chart using Codeigniter. today we will fetch data into MySQL, and plot a Bar graph.
There are many types of charts provide by Google, like a bar chart, area chart, line chart, pie chart, etc. but here we use a bar chart.
In this article, we will plot a bar graph using Google API. 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 a 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;
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 );
Step 3: Create Controller
In this step, we will create a Googlechart.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 a chart and creating a bar graph.
application/controller/Googlechart.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Googlechart 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 = [];
$data['chart_data'] = $records;
$this->load->view('bar_chart',$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 Implement Google bar Chart using Codeigniter - XpertPhp</title>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
google.charts.load('visualization', "1", {
packages: ['corechart']
});
</script>
</head>
<body>
<div id="bar_date_wise" style="width: 900px; height: 500px; margin: 0 auto"></div>
<script language="JavaScript">
// Draw the Bar chart
google.charts.setOnLoadCallback(barChart);
// for year wise
function barChart() {
/* Define the chart to be drawn.*/
var data = google.visualization.arrayToDataTable([
['Date', 'Users Count'],
<?php
foreach ($chart_data as $row){
echo "['".$row['date']."',".$row['count']."],";
}
?>
]);
var options = {
title: 'Day Wise Count Login Users Of Current Month',
is3D: true,
};
/* Instantiate and draw the chart.*/
var chart = new google.visualization.BarChart(document.getElementById('bar_date_wise'));
chart.draw(data, options);
}
</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.
