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PHP FRAMEWORK PowerPoint Presentation

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PHP FRAMEWORK Presentation Transcript

Slide 1 - PHP Frameworks
Slide 2 - Topics What is the framework? Why framework? MVC Framework. Benefits and Drawbacks of MVC. PHP Frameworks Example application using one of framework Screenshots References
Slide 3 - What is a framework ? For example, in order for a program to get data from a mysql database, it has to undergo a list of actions: 1. Connect to the database server 2. Select a database 3. Query the database 4. Fetch the data 5. Use the Data A framework may handle steps 1-4 for you, so that your responsibilities are reduced to: 1. Tell the framework to fetch the data 2. Use the data
Slide 4 - Sample program in single tire architecture Connect to database : $db_host = “localhost"; $db_name = “test"; $db_username = “root"; $db_password = “root"; $conn = mysql_connect($db_host,$db_username,$db_password) or die("Could not connect to Server" .mysql_error()); mysql_select_db($db_name) or die("Could not connect to Database" .mysql_error()); Edit : get code from databse and display at values of input boxes Display :
Slide 5 - Same program using two tire architecture At the PHP file : assign("title",“Get data from Database"); $smarty->assign("keywords",get data, database"); $smarty->assign("description",“Get data from database process ") $query= “select * from users “; $result = Mysql_query(“$query”);” $getdata= mysql_fetch_array($result); $smarty->assign("data",$data); $smarty->display(‘userss.tpl'); {$title} < {section name=rows loop=$data} {$data[rows]} {/section} At a .tpl file
Slide 6 - Why framework? Developing an application from scratch is easy than maintaining it . So after the development the good thing is that its easy to maintain and add more features. Its easy to handle the complex problems easily. 1. Clean urls ( SEO friendly urls ) 2. We can standardization! 3 .Security 4. Extensibility 5. Fast Loading 6. Reusable of code 7. increase flexibility
Slide 7 - MVC Framework -> MVC is a method of separating the user interface of an application from its Domain Logic. -> MVC stands for Model, View, and Controller. It aims to separate your app in these 3 components: Model: ● help you retrieve, insert, and update information in your database. View: ● the information that is being presented to a user. Controller: ● an intermediary between the Model, the View ● any other resources needed to process the HTTP request and generate a web page
Slide 8 - Substitutable user interface : User interface components: Multiple simultaneous views of the same model Synchronized views Easier user interface changes Easier testing Benefits of using MVC Drawbacks of using MVC Increased complexity Close coupling of views and controllers to model Potential for excessive updates Close coupling between view and controller
Slide 9 - MVC
Slide 10 - Top 10 frameworks CodeIgniter Yii CakePHP Zend Symfony PHPDevShell Prado Akelos Zoop QPHP
Slide 11 - Comparison of frameworks
Slide 12 - MVC: Indicates whether the framework comes with inbuilt support for a Model-View-Controller setup. Multiple DB's: Indicates whether the framework supports multiple databases without having to change anything. ORM: Indicates whether the framework supports an object-record mapper, usually an implementation of ActiveRecord. DB Objects: Indicates whether the framework includes other database objects, like a TableGateWay. Templates: Indicates whether the framework has an inbuilt template engine. Caching: Indicates whether the framework includes a caching object or some way other way of caching. Validation: Indicates whether the framework has an inbuilt validation or filtering component. Ajax: Indicates whether the framework comes with inbuilt support for Ajax. Auth Module: Indicates whether the framework has an inbuilt module for handling user authentication. Modules: Indicates whether the framework has other modules, like an RSS feed parser, PDF module or anything else (useful). EDP: Event Driven Programming.New!
Slide 13 - CodeIgniter Features
Slide 14 - Configure the file: system/application/config/ $config['base_url'] = 'http://localhost/'; $config['index_page'] = ''; Default Settings : $config['charset'] = “UTF-8”; $config['cache_path'] = ''; $config['permitted_uri_chars'] = 'a-z 0-9~%.:_-'; $config['log_date_format'] = 'Y-m-d H:i:s'; $config['global_xss_filtering'] = TRUE; To configure the databse: application\config\database.php $db['default']['hostname'] = “”; // Host Name$db['default']['username'] = “”; // User Name$db['default']['password'] = “”; // Password$db['default']['database'] = “”; // Database Name$db['default']['dbdriver'] = “”; // Databse driver.
Slide 15 - CodeIgniter URLs example.com/index.php/news/article/my_article news – Controller article – class function my_article - any additional segments If we add the below contents at .htaccess file DirectoryIndex index.php RewriteEngine on RewriteCond $1 !^(index\.php|images|css|js|robots\.txt|favicon\.ico) RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ ./index.php/$1 [L,QSA] Then URLs will change it into. example.com/news/article/my_article
Slide 16 - load->helper('form');*/ } function index() { if ($this->session->userdata('logged_in') != TRUE) { redirect(base_url().'user/login'); } else { //echo $this->session->userdata('name'); $data['login']=$this->session->userdata('name') ; } $this->load->database(); $data['title']="Welcome to CodeIgniter Upload Images"; $this->load->view('header',$data); $this->load->view('upload_form'); $this->load->view('footer'); } function _createThumbnail($fileName) { $config['image_library'] = 'gd2'; $config['source_image'] = 'uploads/' . $fileName; $config['create_thumb'] = TRUE; $config['maintain_ratio'] = TRUE; $config['width'] = 75; $config['height'] = 75; $this->load->library('image_lib', $config); if(!$this->image_lib->resize()) echo $this->image_lib->display_errors(); } Controller
Slide 17 - function list_images() { $this->load->database(); $this->load->library('pagination'); $config['total_rows'] = $this->db->count_all('code_image'); $config['per_page'] = '3'; $config['full_tag_open'] = '

'; $config['full_tag_close'] = '

'; $config['base_url'] = base_url().'upload/list_images/'; $this->pagination->initialize($config); //echo base_url(); $this->load->model('code_image'); $data['images'] = $this->code_image->get_images($config['per_page'],$this->uri->segment(3)); // This gives us anchor() - see the view at the end $data1['login']=$this->session->userdata('name') ; $data1['title']="List of images in the Website"; $this->load->view('header',$data1); $this->load->helper('url'); $this->load->view('list_images', $data); $this->load->view('footer'); } function view_image($image_id) { $this->load->database(); $this->load->model('code_image'); $data['image'] = $this->code_image->get_image($image_id); $data1['login']=$this->session->userdata('name') ; $data1['title']="List of images in the Website"; $this->load->view('header',$data1); $this->load->view('view_image', $data); $this->load->view('footer'); } }
Slide 18 - db->get('code_image', $num, $offset); //$query = $this->db->get('code_image'); foreach ($query->result_array() as $row) { $result[] = $row; } return $result; } function get_image($image_id) { $query = $this->db->where('image_id', $image_id)->get('code_image'); $result = $query->row_array(); return $result; } } ?> Model
Slide 19 - ppt slide no 19 content not found
Slide 20 - ppt slide no 20 content not found
Slide 21 - List of images : URL : http://localhost/codeigniter/upload/list_images
Slide 22 - Particular Image URL : http://localhost/codeigniter/upload/view_image/1
Slide 23 - Upload an image
Slide 24 - Upload success page
Slide 25 - References PHP framework comparison benchmarks http://avnetlabs.com/php/php-framework-comparison-benchmarks Why Should we use a PHP Framework? http://www.ashesh.com.np/why-should-we-use-a-php-framework/ CakePHP official site http://cakephp.org/ CodeIgniter Site http://codeigniter.com PHP frameworks lists http://www.phpframeworks.com/ http://www.phpwact.org/pattern/model_view_controller
 

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