Codeigniter 4 the lightweight framework of PHP with small footprints. There is not too much configuration required to run. It is not required to use the command line in Codeigniter 4.

Requirements for CodeIgniter 4 Installation:

• Php 7.2 (min)
• Extensions (*intl* extension,*mbstring* extension)
• Database – MySQL
• Localhost server (xampp, wamp, lamp)

Note: you can download any third-party application to create the localhost like xampp, wamp, lamp

Step1. Download Codeigniter 4 

Step2. Extract the zip file in your localhost root directory.

Step3. Open your project in your fav code editor. Here I have used  VScode.

Project running successfully in chrome hit the URL http://localhost/C4/public/

Step 4. Now if you want to remove the public from the URL 

• Copy the index.php and .htaccess file from the public folder and paste it outside the public folder. 
• Open the index.php and change the below-given code 

$pathsPath = real path(FCPATH . ‘../app/Config/Paths.php’);

Replace the above line From below

$pathsPath = real path(FCPATH . ‘/app/Config/Paths.php’);

• And press Ctrl+S to save the changes
• Now you can access the project without the public http://localhost/C4/

Step5. Now create the below-given files in your project

• Home_cnt.php  at path xampp\htdocs\C4\app\Controllers
• Blogs_mod.php at path xampp\htdocs\C4\app\Models
• AddBlog_view.php at path xampp\htdocs\C4\app\Views
• BlogsList_view.php at path xampp\htdocs\C4\app\Views
• EditBlog_view.php at path xampp\htdocs\C4\app\Views

Step6. Configure the database into your project.

Open .env and setup the default database connection

database.default.hostname = localhost

database.default.database = codeigniter4

database.default.username = root

database.default.password = 

database.default.DBDriver = MySQLi

Step7. Setup the project env

Open .env and change the project environment

CI_ENVIRONMENT = development

Step8. Add the given below code into respected files

Home_cnt.php

<?php namespace App\Controllers;

use App\Models\Blogs_mod;

class Home_cnt extends BaseController

{

//blog list

public function index(){

$post = new Blogs_mod();

$data[‘postList’] = $post->findAll();

return view(‘BlogsList_view’,$data);

}

//edit blog

public function edit($id){

$post = new Blogs_mod();

$title = $_POST[‘title’];

$description = $_POST[‘description’];

$data = [

‘blog_title’ => $title,

‘blog_description’  => $description

];

$session = session();

if($post->where(‘blog_id’, $id)->set($data)->update()){

$session->setFlashdata(‘success’, ‘Record Updated Success!’);

}else{

$session->setFlashdata(‘error’, ‘Failed!’);

}

return redirect(‘home’);

}

//delete blog

public function Delete($id){

$post = new Blogs_mod();

$session = session();

if($post->where(‘blog_id’,$id)->delete()){

$session->setFlashdata(‘success’, ‘Record Deleted Success!’);

}else{

$session->setFlashdata(‘error’, ‘Failed!’);

}

return redirect(‘home’);

}

//add blog

public function store(){

$post = new Blogs_mod();

$title = $_POST[‘title’];

$description = $_POST[‘description’];

$data =[

‘blog_title’ =>$title,

‘blog_description’ =>$description

];

$session = session();

if($post->insert($data)){

$session->setFlashdata(‘success’, ‘Record added Success!’);

}else{

$session->setFlashdata(‘error’, ‘Failed!’);

}

return redirect(‘home’);

}

//add blog ui

public function addNew(){

return view(‘AddBlog_view’);

}

public function update($id){

$post = new Blogs_mod();

$data[‘BlogDetails’] = $post->where(‘blog_id’,$id)->first();

return view(‘EditBlog_view.php’,$data);

}

}

 

Blogs_mod.php

<?php namespace App\Models;

use CodeIgniter\Model;

class Blogs_mod extends Model

{

protected $table      = ‘blogs’;

protected $primaryKey = ‘blog_id’;

protected $returnType     = ‘array’;

protected $useSoftDeletes = false;

protected $allowedFields = [‘blog_id’, ‘blog_title’,’blog_description’];

protected $useTimestamps = false;

protected $validationRules    = [];

protected $validationMessages = [];

protected $skipValidation     = true;

}

 

AddBlog_view.php

<main role=”main” class=”container” style=”margin-top:100px;”>

<div style=”margin:30px;text-align:right;”>

<a href=””><button type=”button” class=”btn btn-primary”>Add New</button></a>

</div>

<form action=”<?php echo base_url(‘/Home_cnt/store’) ?>” method=”post”>

<div class=”form-group row”>

<label for=”inputEmail3″ class=”col-sm-2 col-form-label”>Email</label>

<div class=”col-sm-10″>

<input type=”text” class=”form-control” id=”title” name=”title” placeholder=”Title”>

</div>

</div>

<div class=”form-group row”>

<label for=”inputPassword3″ class=”col-sm-2 col-form-label”>Description</label>

<div class=”col-sm-10″>

<textarea name=”description” class=”form-control” id=”” cols=”30″ rows=”10″>Description</textarea>

</div>

</div>

<div class=”form-group row”>

<label for=”inputPassword3″ class=”col-sm-2 col-form-label”></label>

<div class=”col-sm-10″>

<button type=”submit” class=”btn btn-primary”>Submit</button>

</div>

</div>

</form>

</main>

Read Also:- Set up a React JS Development Environment

BlogsList_view

<main role=”main” class=”container” style=”margin-top:100px;”>

<?php

$session = session();

if($session->getFlashdata(‘success’)){

echo ‘<div class=”alert alert-success” role=”alert”>’.$session->getFlashdata(‘success’).'</div>’;

}elseif($session->getFlashdata(‘error’)){

echo ‘<div class=”alert alert-danger” role=”alert”>’.$session->getFlashdata(‘error’).'</div>’;

} ?>

<div style=”margin:30px;text-align:right;”>

<a href=”<?php echo base_url(‘/Home_cnt/addNew’); ?>”><button type=”button” class=”btn btn-primary”>Add New</button></a>

</div>

<table class=”table table-hover”>

<thead>

<tr>

<th scope=”col”>Title</th>

<th scope=”col”>Description</th>

<th scope=”col”>Edit</th>

<th scope=”col”>Delete</th>

</tr>

</thead>

<tbody>

<?php foreach($postList as $listData){?>

<tr>

<th scope=”row”><?php echo $listData[‘blog_title’];?></th>

<td><?php echo $listData[‘blog_description’];?></td>

<td><a href=”<?php echo base_url(‘/Home_cnt/update’).”/”.$listData[‘blog_id’];?>”><button type=”button” class=”btn btn-secondary”>Edit</button></a> </td>

<td><a href=”<?php echo base_url(‘/Home_cnt/Delete’).”/”.$listData[‘blog_id’];?>”><button type=”button” class=”btn btn-danger”>Delete</button></a></td>

</tr>

<?php } ?>

</tbody>

</table>

</main>

 

EditBlog_view

<main role=”main” class=”container” style=”margin-top:100px;”>

<div style=”margin:30px;text-align:right;”>

<a href=””><button type=”button” class=”btn btn-primary”>Add New</button></a>

</div>

<form action=”<?php echo base_url(‘/Home_cnt/edit’).”/”.$BlogDetails[‘blog_id’]; ?>” method=”post”>

 

<div class=”form-group row”>

<label for=”inputEmail3″ class=”col-sm-2 col-form-label”>Email</label>

<div class=”col-sm-10″>

<input type=”text” class=”form-control” id=”title” name=”title” placeholder=”Title” value=”<?php echo $BlogDetails[‘blog_title’]; ?>”>

</div>

</div>

<div class=”form-group row”>

<label for=”inputPassword3″ class=”col-sm-2 col-form-label”>Description</label>

<div class=”col-sm-10″>

<textarea name=”description” class=”form-control” id=”” cols=”30″ rows=”10″><?php echo $BlogDetails[‘blog_description’]; ?></textarea>

</div>

</div>

<div class=”form-group row”>

<label for=”inputPassword3″ class=”col-sm-2 col-form-label”></label>

<div class=”col-sm-10″>

<button type=”submit” class=”btn btn-primary”>Submit</button>

</div>

</div>

</form>

</main>

 

Step9. Finally, you have to make the change in routes.php

Change the below 

Add the new route in routes.php for Home_cnt controller

$routes->get(‘/’, ‘Home_cnt::index’);

Comment out the old routes for the Home controller

//$routes->get(‘/’, ‘Home::index’);

Read Also:- How ERP Software Enhance your Business Productivity & Profits

CodeIgniter 4 Project Screenshots.