Image Text Overlay Watermarking Tutorial Using Codeigniter 4 Example

Aug 24, 2021 . Admin

Hello Friends,

Now let's see example of how to use image text overlay watermarking in codeigniter 4. This is a short guide on codeigniter 4 if image text overlay watermarking. We will use how to use image text overlay watermarking using in codeigniter 4. Here you will learn how to use image text overlay watermarking in codeigniter 4. We will use how to use if image text overlay watermarking using codeigniter 4. Let's get started with how to image text overlay watermarking use in codeigniter 4.

Here i will give you many example how you can use image text overlay watermarking in codeigniter 4.

Step 1: Install Codeigniter Project

we require to download or install codeigniter project, it can install in a two ways, so first fire bellow command:

composer create-project codeigniter4/appstarter
Step 2: Turn On Error Handling

In codeigniter 4 you have to turn on the error handling by setting up display_errors property to 1 from 0, make sure to change the values in app/Config/Boot/development.php and app/Config/Boot/production.php files.

ini_set('display_errors', '1');
Step 3: Create Files Table In Database

In this is step to generate a database table in your application database.

    id int(11) NOT NULL AUTO_INCREMENT COMMENT 'Primary Key',
    name varchar(100) NOT NULL COMMENT 'Name',
    type varchar(255) NOT NULL COMMENT 'File Type',
    PRIMARY KEY (id)
Step 4: Connect App To Database

Open the following file, and insert database name, username and password into the file.

Path: app/Config/Database.php

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,

If you are a Mac user or anyhow getting the CodeIgniter\Database\Exceptions\DatabaseException or Unable to connect database: Codeigniter errors. Then, you can follow the given below instruction to get rid of the mentioned issues.

# ====== MAMP
public $default = [
  'hostname' => '/Applications/MAMP/tmp/mysql/mysql.sock',
# ====== XAMP
public $default = [ 
  'hostname' => '/Applications/XAMPP/xamppfiles/var/mysql/mysql.sock',
Step 5: Create And Set Up Controller

In this step, you require to create ImgManipulationController.php file in app/Controllers folder. Then, head over to app/Controllers/ImgManipulationController.php and add the add the given code.

You have to create the 'images' folder inside the 'public' folder; The public/images directory will hold the uploaded and watermarked file. Also, create the 'uploads' folder in 'writable' path; eventually, you may see these folder updated after successfully uploading the image files.

namespace App\Controllers; 
use CodeIgniter\Controller;
class ImgManipulationController extends Controller 
    public function index() { 
        return view('image');
    public function upload() {
        helper(['form', 'url']); 

        // access database
        $database = \Config\Database::connect();
        $db = $database->table('files');
        // file validation
        $isValidFile = $this->validate([
            'file' => [
        // check validation
        if (!$isValidFile) {
            print_r('Upload valid file upto 4mb size');
        } else {
            $imgPath = $this->request->getFile('file');

            // Image manipulation
            $image = \Config\Services::image()
                ->text('Copyright Positronx @2021', [
                    'color'      => '#fff',
                    'opacity'    => 0.7,
                    'withShadow' => true,
                    'hAlign'     => 'center',
                    'vAlign'     => 'bottom',
                    'fontSize'   => 20
                ->save(FCPATH .'/images/'. $imgPath->getRandomName());

            $imgPath->move(WRITEPATH . 'uploads');

            $fileData = [
                'name' =>  $imgPath->getName(),
                'type'  => $imgPath->getClientMimeType()

            $store = $db->insert($fileData);
            print_r('File uploaded successfully.');
Step 6: Register New Route

Path: app/Config/Routes.php

$routes->get('/', 'ImgManipulationController::index');
Step 7: Create Image Upload View

Next to create a view file in your application under directiory.

Path: app/View/image.php

<!DOCTYPE html>
    <title>Image Text Overlay Watermarking Tutorial Using Codeigniter 4 Example -</title>
    <link rel="stylesheet" href="">
    <div class="container mt-5" style="max-width: 500px">
        <h2 class="mb-4 text-center">Image Text Overlay Watermarking Tutorial Using Codeigniter 4 Example</h2>

        <form method='post' action='<?php echo base_url(); ?>/ImgManipulationController/upload'

            <div class="form-group">
                <label for="formFileLg" class="form-label">Select image :</label>
                <input class="form-control form-control-lg" type="file" name="file">

            <div class="d-grid mt-3">
                <input type="submit" value="Upload" class="btn btn-outline-primary" />
Step 8: Start CI Application

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.


It will help you....

#Codeigniter 4 #Codeigniter