Introduction To Code Igniter

Introduction To CodeIgniter Mohammad Amzad Hossain Softwork Solutions [email_address]

Prerequisite ,[object Object],[object Object],[object Object]

Index ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Evolution of Web Development How you first started building websites.

Evolution of Web Development How you’re building websites now.

Evolution of Web Development How you build websites with a framework

Basic Idea Of Web Framework ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Why Framework Not Scratch ? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

MVC Architecture ,[object Object],[object Object],[object Object],[object Object],Figure : 01

What is CodeIgniter ??? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Installation of CodeIgniter ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Application Flow Of CodeIgniter Figure : 2 [ Application Flow of CodeIgniter]

CodeIgniter URL ,[object Object],Segments in a URI CodeIgniter Optionally Supports Query String URL www.your-site.com/ news / article / my_article www.your-site.com/ class / function / ID www.your-site.com/index.php? c=news & m=article & ID=345

Controllers ,[object Object],www.your-site.com/index.php/ first <?php class First extends Controller{ function First() { parent::Controller(); } function index () { echo “<h1> Hello CUET !! </h1> “; } } ?> // Output Will be “Hello CUET!!” ,[object Object],[object Object],[object Object]

Controllers ,[object Object],<?php class First extends Controller{ function index() { echo “<h1> Hello CUET !! </h1> “; } function bdosdn ( $location ) { echo “<h2> Hello $location !! </h2>”; } } ?> // Output Will be “Hello world !!” www.your-site.com/index.php/ first / bdosdn/ world ,[object Object],[object Object]

VIEWS ,[object Object],[object Object],[object Object],<html> <title> My First CodeIgniter Project</title> <body> <h1> Welcome ALL … To My .. ::: First Project ::: . . . </h1> </body> </html> web_root/myci/system/application/views/myview.php

VIEWS ,[object Object],Data Passing to a VIEW from Controller $this->load->view(‘myview’); function index() { $var = array( ‘ full_name’ => ‘Amzad Hossain’, ‘ email’ => ‘tohi1000@yahoo.com’ ); $this->load->view(‘myview’, $var); } <html> <title> ..::Personal Info::.. </title> <body> Full Name : <?php echo $full_name;?> <br /> E-mail : <?=email;?> <br /> </body> </html>

VIEWS ,[object Object],[object Object],[object Object],[object Object], <?php if( $for_this == true ):?> <h1> For This </h1> <?php elseif( $for_that == true ): ?> <h1> For That </h1> <?php else: ?> <h1> What </h1> <?php endif; ?> ,[object Object],[object Object]

Models ,[object Object],[object Object],Loading a Model inside a Controller <?php class Mymodel extend Model{ function Mymodel() { parent::Model(); } function get_info () { $query = $this->db->get(‘name’, 10); /*Using ActiveRecord*/ return $query->result(); } } ?> $this->load->model(‘mymodel’); $data = $this->mymodel->get_info();

CodeIgniter Libraries Special Purpose Classes Loading CodeIgniter Library Benchmarking Database Encryption Calendaring FTP Table File Uploading Email Image Manipulation Pagination Input and Security HTML Trackback Parser Session Template Unit Testing User Agent URI Validation $this->load->library(‘database’);

CodeIgniter Libraries ,[object Object],[object Object],Active Record Pattern General Approach function index() { $this->load->library(‘database’); $rslt = $this->db->query (“ select first_name from user_name ”); foreach( $rslt->result() as $row_data) echo $row_data->first_name . “<br />”; } function index() { $this->load->library(‘database’); $this->db->select(“first_name”); $rslt = $this->db->get (“ user_name ”); foreach( $rslt->result() as $row_data) echo $row_data->first_name . “<br />”; }

Helpers ,[object Object],Loading A Helper Inside a Controller Array Date File HTML Smiley Text URL Cookie Download Form Security String Directory E-mail Inflector XML Parser Typography $this->load->helper(‘helper_name’); $this->load->helper(array(‘form’,’url’) );

Helpers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Useful Links ,[object Object],[object Object]

Reference ,[object Object],[object Object],[object Object],[object Object]

Introduction To Code Igniter

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