How to Implement Google line Chart using Codeigniter

In this article, we will explain to you how to Implement Google line Chart using Codeigniter. today we will fetch data into MySQL, and plot a Line 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 Line chart.

In this article, we will plot a line 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;

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 a Googlechart.php file in the “application/controller” directory and paste the below code in this controller. here we will fetch data Day Wise Count Login Users Of Current Month from the database. that data will be pass in a chart and creating a Line 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 line_chart() {
      $query =  $this->db->query('SELECT DATE_FORMAT(login_date, "%Y-%m-%d") AS `date`, COUNT(`login_date`) as count FROM login_history WHERE MONTH(login_date) = "' . date('m') . '" AND YEAR(login_date) = "' . date('Y') . '" GROUP BY DAY(login_date)'); 
      $records = $query->result_array();
      $data['chart_data'] = $records;
      $this->load->view('line_chart',$data);
    }	
<div style="clear:both; margin-top:0em; margin-bottom:1em;"><a href="https://xpertphp.com/how-to-create-multi-level-nested-category-example-in-codeigniter/" target="_blank" rel="nofollow" class="u6928397679f519d8f2bd066c91dae073"><style>.u6928397679f519d8f2bd066c91dae073{padding:0;margin:0;padding-top:1em!important;padding-bottom:1em!important;width:100%;display:block;font-weight:700;background-color:#eaeaea;border:0!important;border-left:4px solid #34495E!important;box-shadow:0 1px 2px rgba(0,0,0,.17);-moz-box-shadow:0 1px 2px rgba(0,0,0,.17);-o-box-shadow:0 1px 2px rgba(0,0,0,.17);-webkit-box-shadow:0 1px 2px rgba(0,0,0,.17);text-decoration:none}.u6928397679f519d8f2bd066c91dae073:active,.u6928397679f519d8f2bd066c91dae073:hover{opacity:1;transition:opacity 250ms;webkit-transition:opacity 250ms;text-decoration:none}.u6928397679f519d8f2bd066c91dae073{transition:background-color 250ms;webkit-transition:background-color 250ms;opacity:1.11;transition:opacity 250ms;webkit-transition:opacity 250ms}.u6928397679f519d8f2bd066c91dae073 .ctaText{font-weight:700;color:#464646;text-decoration:none;font-size:16px}.u6928397679f519d8f2bd066c91dae073 .postTitle{color:#000;text-decoration:underline!important;font-size:16px}.u6928397679f519d8f2bd066c91dae073:hover .postTitle{text-decoration:underline!important}</style><div style="padding-left:1em; padding-right:1em;"><span class="ctaText">See also</span>  <span class="postTitle">How to Create Multi level Nested category in Codeigniter</span></div></a></div>
}
?>

<?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 line_chart() {

$query = $this->db->query('SELECT DATE_FORMAT(login_date, "%Y-%m-%d") AS `date`, COUNT(`login_date`) as count FROM login_history WHERE MONTH(login_date) = "' . date('m') . '" AND YEAR(login_date) = "' . date('Y') . '" GROUP BY DAY(login_date)');

$records = $query->result_array();

$data['chart_data'] = $records;

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

}

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

<!Doctype html>
<html>
<head>
  <title>How to Implement Google line 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="line_date_wise" style="width: 900px; height: 500px; margin: 0 auto"></div>
<script language="JavaScript">
  // Draw the Line chart 
  google.charts.setOnLoadCallback(lineChart);   
    function lineChart() {
        /* Define the chart to be drawn.*/
        var data = google.visualization.arrayToDataTable([
            ['Date', 'Login Count'],
            <?php 
             foreach ($chart_data as $row){
             echo "['".$row['date']."',".$row['count']."],";
             }
             ?>
        ]);
        var options = {
          title: 'Day Wise Count Login Users Of Current Month',
          curveType: 'function',
          legend: { position: 'bottom' }
        };
        /* Instantiate and draw the chart.*/
        var chart = new google.visualization.LineChart(document.getElementById('line_date_wise'));
        chart.draw(data, options);
    }
</script>
</body>
</html>

<!Doctype html>

<html>

<head>

<title>How to Implement Google line Chart using Codeigniter - XpertPhp</title>

google.charts.load('visualization', "1", {

packages: ['corechart']

});

</script>

</head>

<body>

// Draw the Line chart

google.charts.setOnLoadCallback(lineChart);

function lineChart() {

/* Define the chart to be drawn.*/

var data = google.visualization.arrayToDataTable([

['Date', 'Login Count'],

<?php

foreach ($chart_data as $row){

echo "['".$row['date']."',".$row['count']."],";

}

]);

var options = {

title: 'Day Wise Count Login Users Of Current Month',

curveType: 'function',

legend: { position: 'bottom' }

};

/* Instantiate and draw the chart.*/

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

chart.draw(data, options);

}

</script>

</body>

</html>

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