2012 | PHP by Jochem

PHP & MYSQLThe basics

Thursday, November 15, 12

purpose of this course

You can only master web-development by doing it a lot

This course enables you to start doing it (a lot)

Learn the language

Walk through the possibilities

Know the (online) references for the future

end of this week

?Thursday, November 15, 12

planning

Day 1: PHP

Day 2: CodeIgniter

Day 3: MySQL

Day 4: Form Handling & AJAX

Day 5: Integrating (login system)

Overview web-development

OVERVIEW WEB-DEVELOPMENTWhat does it take to build a website

Browser / Frontend

Java-script

Content

Behavior

Server / Backend

database

Front-end & Back-endFrontend

HTML CSS Java-script

Backend

PHP database

generate

PHPScripting

PHP Hypertext Preprocessing

Executed on server

Communication with database

Handle data

Parsing (parts of) HTML

PHP file

write in text-editor

HTML & PHP code

Executed on request by browser

Return HTML to browser

Syntax

the php code..;

localhost/day1/hello.php

Commenting

One line comment: //...

Multiple line comment: /* ... */

Variables

Store a value in a variable

Use/change the value later on

PHP var starts with $

Name begins with letter or underscore

Name may contain A-z, 0-9, _

Case sensitive

year.php

Main varsint

number

$x = 25;

$y = 25.5;

string

$x = “Hello”;

combine with .

$y = “world”;

$z = $x . $y;

list of values

$x = array(1,24,12);

to be continued..

Single & double quotes

Exercise

......

Use double quotes for $sentence 1

Use single quotes for $sentence 2

Arithmetic operators

Shortcuts

Elseif

Exercise

Logical operators

Exercise

find largest

use AND or &&

indicate if no largest

Arrays

List of values

Stored in 1 variable

Each value has its own index

Numeric Array

Each index is a number

Associative Array

Each index is a word

For loop

Run block of code several times

for(init; condition; increment){

optional: stop with break;

Loop over Array

Foreach

Exercise

Create 1 array with your family members

Find a way to store relation and name

Echo per member “I’ve got a relation named name”

So, “I’ve got a brother named Maarten”

Multidimensional Arrays

Array in array

See multidimensional.php

Function

700+ predefined functions

Self-made functions

Create your own function

Function parameters

Default parameters

Exercise

Create calculating function

3 parameter: 2 numbers and the operator (text)

Function returns result

Example: calc(2,3,‘multiply’); //returns 6

Hint: use switch()

Form Handling

PHP can handle the data of an HTML form

Data is communicated in a array named $_POST

See post.php

CODEIGNITERPHP framework

PHP Framework

Set of folders & PHP files

Predefined structure

Many predefined functions

Model View Controller

Separate Lay-out, Logic & Database traffic

Lay-out / view: HTML

Logic / controller: PHP

Database / model: MySQL

Controller

Model View

Request Answer

Model View Controller

Separate Lay-out, Logic & Database traffic

Lay-out / view: HTML

Logic / controller: PHP

Database / model: MySQL

Controller

Model View

Request Answer

database

Sales TextsProductsUsersModels

Product BuyCatalogHomeControllers History

ProductBuyCatalogHomeViews History

BuyCatalogHomeViews HistoryProduct

Install

www.codeigniter.com

download

place content in folder day2 (in www or htdocs)

go to http://localhost/day2

From URL to Controller

Go to http://localhost/day2/index.php/welcome/index

Site url Controller Function

http://localhost/day2/index.php welcome index

Check it in application/controllers/welcome.php

Loading views

$this->load->view()

CI knows where the views folder is

Sending variables

Create associative array

Send as second parameter in $this->load->view()

Creating more controllers

Duplicate existing

Change filename

Change ClassName (Capitalized)

function index() is called if no function is called in URL

Creating more functions

Create a public function ...()

Load a view

Create the view

Go to URL

Configuring your website

applications/config/config.php

applications/config/autoload.php

applications/config/routes.php

Config.php

Information for CI

URL of the website

Autoload.php

Load libraries & helpers

E.g. Database, Session

Load in autoload.php for site-wide

Load in controller for only that page

Routes.php

Convert URLs to controllers

Point /about-me to controller about

Navigating through your site

Create a view ‘menu_view.php’

Create simple navigation

Use site_url() in links

Load view in top of every view

Using HTML template

Download ‘Template.php’ from dropbox

Place in application/libraries/

Add to $libraries in application/config/autoload.php

Change $this->load->view() to $this->template->load(‘template_view’, ‘viewfile’, vars)

Creating HTML template

Create template_view.php

Add basic HTML structure

Load ‘menu_view.php’ in body

Recreating Calculator

Create controller calculator.php

Add to menu

Create view calculator_view.php

HTML in view, Logic in controller

Form Validation

Lookup at codeigniter reference

Create contact_view.php

Build email form with name, email, message, hidden, submit

Create controller contact.php

Load Form_validation in controller, set up and check for correct values

Send email

Lookup at codeigniter reference

Load Email in controller contact.php

If correct values, send email

Exercise

Create 5 page website (home, about me, portfolio, calculator, contact)

Use template and ‘menu_view.php’

Make calculator and contact work

SQLDatabases

Structured Query Language

Query is a request/command to a database

In our case, a MySQL database

Possibilities

Retrieve data from DB

Insert data in DB

Update data in DB

Delete data from DB

Create tables in DB

> SELECT

> INSERT

> UPDATE

> DELETE

Database

Database is build up in tables

Tables contain records (rows) with data

Select

Select * FROM persons

Select LastName, FirstName FROM persons

SELECT * FROM persons WHERE City = Sandnes

SELECT LastName FROM Persons WHERE FirstName = Tove

= <> < > <= >=

SELECT P_id FROM Persons WHERE FirstName = tove AND LastName = Svendson

Order By

SELECT * FROM persons ORDER BY LastName

Insert

INSERT INTO Persons VALUES (4,'Nilsen', 'Johan', 'Bakken 2', 'Stavanger')

Update

UPDATE Persons

SET Address='Nissestien 67', City='Sandnes' WHERE LastName='Tjessem' AND FirstName='Jakob'

Delete

DELETE FROM PersonsWHERE LastName='Tjessem' AND FirstName='Jakob'

CodeIgniter

$this->db->select(‘*’);

$this->db->from(‘persons’);

$this->db->where(‘P_id’, 5);

$this->db->get()->row_array();

$this->db->where(‘P_id’, 5);

$this->db->get(‘persons’)->row_array();

Configuring

application/config/database.php

Enter MySQL Username

Enter MySQL Password

Enter MySQL Database

Add ‘database’ to autoload.php in Libraries

Security

INSERT INTO persons (FirstName, LastName) VALUES (‘Dirk’, ‘Hens’);

Text in FirstName input: Dirk’, ‘Hens’), (‘Jochem

INSERT INTO persons (FirstName, LastName) VALUES (‘Dirk’, ‘Hens’), (‘Jochem’, ‘van Kapel)

CodeIgniter auto adds “”: INSERT INTO persons (FirstName, LastName) VALUES (“‘Dirk’, ‘Hens’), (‘Jochem’”, “‘van Kapel’”);

2012 | PHP by Jochem

Education

Jochem bloemendaal slide share presentation

Presentatie Jochem de Jong JM2040

Torsten Czenskowsky Jochem Piontek - bücher.de

PHP Tour 2012 - Conférence FuelPHP

Markus Jochem, Dr. Susanne Klein, Thomas Nebling

Saving energy with smart plugs Jochem Liander

PHP Annual Report 2012/13

Gestion des dépendances dans un projet PHP - Forum PHP 2012

PHP London Meetup December 2012

Advanced Web 2012 Lecture 4 Sean Costain 2012. PHP Sean Costain 2012 What is PHP? PHP is a widely-used general-purpose scripting language that is especially

Douma Jochem a Gyerekkeresztseg Es a Megteres

Apresentação na PHP Conference Brasil 2012

JOCHEM KURSTJENS PROJECT DIRECTOR HEALTHCARE VK

2012 | Html & CSS by Jochem

Performance 2013 - Jochem Vroom - Imbull

Bol.com Partner Event 2013 - Jochem Vroom

2012 08-11-flow3-northeast-php

Eindverslag WNF - Pieter, Melissa, Julian, Jochem

JOCHEM KURSTJENS PROJECT DIRECTOR HEALTHCARE VK BRUGGE, 27 september 2012 SYSTEEMINTEGRATIE IN DE ZORG De systeemintegratie op vandaag

DDD e PHP - TDC 2012