Free CodeIgniter Tutorial

Code Igniter

Installation and First Run:

1. Download the zip file from the above URL.  Unzip  and put in to xampp/htdoc folder

2. Open the application/config/config.php file with a text editor and set your base URL. lets asumme that your base URL is set like this:

$config[‘base_url’] = http://localhost/CodeIgniter;

3. if you intend to use a database, open the application/config/database.php file with a text editor and set your database settings. Set the following variables according to your setup.

$db[‘default’][‘hostname’] = “localhost”;
$db[‘default’][‘username’] = “admin”;
$db[‘default’][‘password’] = “*****”;
$db[‘default’][‘database’] = “projectone”;
$db[‘default’][‘dbdriver’] = “mysql”;
$db[‘default’][‘dbprefix’] = “”;
$db[‘default’][‘active_r’] = TRUE;
$db[‘default’][‘pconnect’] = TRUE;
$db[‘default’][‘db_debug’] = TRUE;
$db[‘default’][‘cache_on’] = FALSE;
$db[‘default’][‘cachedir’] = “”;

5. now you are ready to run our installed piece of software. in order to run Code Igniter you have to visit the following URL in you web server.

http://localhost/codeigniter/index.php/

if your setup is correct then you will see a welcome page with heading

“Welcome to Code Igniter!”

 

Format of run the Codeigniter project :

 

Ex:  http://localhost/foldername(Projectfolder)/index.php/Controllerclass name/function name in controller Class

 

Insert data Into Database Using Codeigniter

Form.php   (Save as   view   folder)

VIEW

 

<?php

$this->load->helper(‘form’);

echo form_open(‘Register_form/createlogin’); //Doing Action

echo form_input(‘username’,’venu’); echo”<br>”;

echo form_input(‘password’,’password’);                                                        Creating Text box s and                  

echo form_submit(‘submit’,’create account’);                                                            Submit  Button

?>

Insert_model.php (Save as   Model   folder)

Model     

<?php

class Insert_model extends CI_Model{

function Insert_model()

{           parent::__construct();

}

function insertdata()

{                                                                                          Database Column Names

$new_member_insert_data =

array(‘name’ => $this->input->post(‘username’),’password‘=>$this->input->post(‘password’));

$this->db->insert(‘login’,$new_member_insert_data);                                    Text Box Names

return ;

}                                      Table Name

}      ?>

Register.php (Save as   Controller folder)

Controller

<?php

class Register_form extends CI_Controller{

function Register_form()

{     parent::__construct();

}

function forms(){

$this->load->view(‘form’);                                      Calling  Index form

}

function createlogin() {

$this->load->library(‘form_validation’);

$this->form_validation->set_rules(‘username’, ‘Name’,’trim|required’);

$this->form_validation->set_rules(‘password’, ‘password’,’trim|required’);        Form Validation

if($this->form_validation->run() == FALSE)

{ $this->load->view(‘form’);

}

$this->load->model(‘Insert_model’);                         Calling Model file

if($query=$this->Insert_model->insertdata())                     Load the  ‘insertdata’ function                 

            {                                                                                                                    in Model

echo”fail”;

}

else{    echo”succes”;  }           }//createlogin   }//Class    ?>//close php

http://localhost/CodeIgniter/index.php/Register_form/forms

View Database Details Using Codeigniter

View

<?php                                                                                      View _details.php (Save in View folder)

$this->load->helper(‘form’);

echo form_open(‘View_database_details/view_databse’);

echo form_submit(‘submit’,’view’);

?>

Model

<?php                                                                                         View_database_model(save in Model )

class View_database_model extends CI_Controller{

function View_database_model()

{     parent::__construct();

Here get means “select *form tablename

}

function viewdatabases()

{

$query=$this->db->get(‘login’);

return $query->result();

} //viewdatabse

}//class

?>//php

 

Controller

<?php

class View_database_details extends CI_Controller

{

function viewform()

{

$this->load->view(‘view_details’);

}

Load viewdatabase function In Model

function view_databse(){

$this->load->model(‘View_database_model’);

$data[‘query’]=$this->View_database_model->viewdatabases();

<? foreach($query as $row) { “;echo” $row->name; echo” $row->password”; print “<br>”; } ?>

$this->load->view(‘result’,$data);

result.php Save in view folder

}

}

This will Display this Database Results

?>

 

 

 

http://localhost/CodeIgniter/index.php/View_database_details/viewform

Upload_form.php  Save in View folder

Upload  and Display Image Using Codeigniter

View

<?php

$this->load->helper(‘form’);

echo form_open_multipart(‘image_upload/uploadfile’);

echo form_upload(‘file’);

echo form_submit(‘submit’,’Upload’);

Image_upload.php Save in Controller

?>

Controller

<?php

class Image_upload extends CI_controller

{

function image_upload()

{

parent::__construct();

}

function image()

{

$this->load->view(‘upload_form’);

}

function uploadfile() {

$config[‘upload_path’]=’uploads/’;

$config[‘allowed_types’]=’gif|jpg|png|jpeg’;

$config[‘max_size’]=’1000′;

$config[‘max_width’]=’1920′;

$confing[‘max_height’]=’1280′;

$this->load->library(‘upload’,$config);

if(!$this->upload->do_upload(‘file’))            echo $this->upload->display_errors();

else {   $fInfo = $this->upload->data();

$this->_createThumbnail($fInfo[‘file_name’]);

$data[‘uploadInfo’] = $fInfo;

$data[‘thumbnail_name’] = $fInfo[‘raw_name’] . ‘_thumb’ . $fInfo[‘file_ext’];

$this->load->view(‘upload_success’, $data);

}                    }

function _createThumbnail($fileName) {

$config[‘image_library’] = ‘gd2’;

$config[‘source_image’] = ‘uploads/’ . $fileName;

$config[‘create_thumb’] = TRUE;

$config[‘maintain_ratio’] = TRUE;

$config[‘width’] = 575;

$config[‘height’] = 75;

$this->load->library(‘image_lib’, $config);

if(!$this->image_lib->resize()) echo $this->image_lib->display_errors();

}

}

?>

Upload_success .php Save in View floder

view

<body>

<div id=”container”>

<p>Congratulations. Your photo has been uploaded successfully. </p>

<dl>     <dt>File Name: </dt>

<dd> <?= $uploadInfo[‘file_name’]; ?> </dd>

<dt>File Size: </dt>

<dd> <?= $uploadInfo[‘file_size’]; ?> </dd>

<dt> File Extension: </dt>

<dd> <?= $uploadInfo[‘file_ext’]; ?> </dd>

</dl>

<img alt=”Your Image” src=”<?= base_url() . ‘uploads/’ . $file_Name;?>” />

<img alt=”Your Thumbnail” src=”<?= base_url() . ‘uploads/’ . $thumbnail_name;?>” />

</div>    </body>

This Function name in Controller file

This Controller Class  name

http://localhost/CodeIgniter/index.php/image_upload/image

 

 

 

 

M   .  V  .  C