CSV (Comma Separated Values ) is the most popular file format for data import and export within the project.
In PHP for creating CSV file, you can either use fputcsv() method or directly write the comma-separated content on the file.
In this tutorial, I will show you how you can export MySQL data in CSV file format in your CodeIgniter 3 project.
Contents
1. Table structure
I am using users
table in the example and added some data.
CREATE TABLE `users` ( `id` int(11) NOT NULL PRIMARY KEY AUTO_INCREMENT, `username` varchar(60) NOT NULL, `name` varchar(50) NOT NULL, `gender` varchar(10) NOT NULL, `email` varchar(60) NOT NULL ) ENGINE=InnoDB DEFAULT CHARSET=latin1;
2. Configuration
Navigate to application/config/database.php
and define Database connection.
$db['default'] = array( 'dsn' => '', 'hostname' => 'localhost', 'username' => 'root', // Username 'password' => '', // Password 'database' => 'tutorial', // 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 );
Default controller
Open application/config/routes.php
and edit default_controller
value to User
.
$route['default_controller'] = 'Users';
Load Database
To access the MySQL database require loading database
library.
Open application/config/autoload.php
and add the database
in libraries array()
.
$autoload['libraries'] = array("database");
3. Model
Create a new Main_Model.php
file in application/models/
folder.
Create a single method getUserDetails()
for records select from users
table and return an Array.
Completed Code
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); class Main_model extends CI_Model { function getUserDetails(){ $response = array(); // Select record $this->db->select('username,name,gender,email'); $q = $this->db->get('users'); $response = $q->result_array(); return $response; } }
4. Controller
Create a new Users.php
file in application/controller/
folder.
Defined 3 methods –
- __constuct() – Load url helper and
Main_model
model. - index() – Fetch data by calling
getUsersDetails()
method and pass in$this->load->view('users_view',$data);
- exportCSV() – Using this method for export data.
Set the filename and header requests. Select records by calling getUserDetails()
method and create a file variable.
Loop on the fetched records and write data in $file
variable using fputcsv()
method.
Completed Code
<?phpdefined('BASEPATH') OR exit('No direct script access allowed'); class Users extends CI_Controller { public function __construct(){ parent::__construct(); // load base_url $this->load->helper('url'); // Load Model $this->load->model('Main_model'); } public function index(){ // get data $data = array(); $data['usersData'] = $this->Main_model->getUserDetails(); // load view $this->load->view('users_view',$data); } // Export data in CSV format public function exportCSV(){ // file name $filename = 'users_'.date('Ymd').'.csv'; header("Content-Description: File Transfer"); header("Content-Disposition: attachment; filename=$filename"); header("Content-Type: application/csv; "); // get data $usersData = $this->Main_model->getUserDetails(); // file creation $file = fopen('php://output', 'w'); $header = array("Username","Name","Gender","Email"); fputcsv($file, $header); foreach ($usersData as $key=>$line){ fputcsv($file,$line); } fclose($file); exit; } }
5. View
Create a new users_view.php
file in application/views/
folder.
List user data in <table>
by looping on $usersData
array variable and create a <a href='<?= base_url() ?>index.php/users/exportCSV'>Export</a>
element for an export link.
Completed Code
<?php defined('BASEPATH') OR exit('No direct script access allowed'); ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Export MySQL data to CSV file in CodeIgniter 3</title> </head> <body> <!-- Export Data --> <a href='<?= base_url() ?>index.php/users/exportCSV'>Export</a><br><br> <!-- User Records --> <table border='1' style='border-collapse: collapse;'> <thead> <tr> <th>Username</th> <th>Name</th> <th>Gender</th> <th>Email</th> </tr> </thead> <tbody> <?php foreach($usersData as $key=>$val){ echo "<tr>"; echo "<td>".$val['username']."</td>"; echo "<td>".$val['name']."</td>"; echo "<td>".$val['gender']."</td>"; echo "<td>".$val['email']."</td>"; echo "</tr>"; } ?> </tbody> </table> </body> </html>
6. Demo
7. Conclusion
In the example, I created a method for the data export in CSV format and pointed the Export link to the controller method. I used fputcsv() method to write data to the file.
You can view the CodeIgniter 4 version of this tutorial here.
View this tutorial, If you want to know CSV file data import in CodeIgniter 3.
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