ENGLISH EDITION

Why IT books should be updated?

 

Since 2013 PHP was improved and updated. In this new (improved and updated) edition I am using some new tools available online. Code examples are also checked, updated and improved. This edition includes also new PHP features (for example: generators) to become more complete and more recent.

 

 

PHP is like C and C++, but interpreted (not compiled) server-side universal programming language (named also the server scripting language) used for dynamic websites and interactive web applications. PHP codes as input produce HTML as output. The PHP script is executed on the server, and the plain HTML result is sent back to the browser. Users do not need to install any additional software to be able to view PHP generated web pages. All being required is that the web server has PHP installed in order to interpret PHP scripts.

 

 

* PHP files can contain text, HTML, CSS, JavaScript, and PHP code.

* PHP codes are executed on the server, and the result is returned to the client’s browser as a plain HTML.

* PHP files have as default extension *.php (* = file name, php = extension).

* So named pure PHP files contain PHP codes only (without HTML, JavaScript, nor CSS).

 

In contrast with static HTML sites, PHP sites are dynamically generated. Instead of the site containing a large number of static HTML files, a PHP-based site may consist of only a few template files (even Single PHP pages are in use). With PHP we are not limited to output HTML. We can output images, PDF files and Flash movies or any text, such as XHTML or XML. Even all HTML code can be dynamically generated by pure PHP files.

 

 

 

Why IT books should be updated?

 

CHAPTER 1: Introduction to the e-book edition

What is PHP?

What is a PHP File?

How to install a PHP interpreter?

How to test local configuration?

How to use PHP based on Command Line Interface (CLI)?

How to run PHP on a remote server?

Compileonline.com: PHP Page vs. PHP Web View Page

Text output – codepad.org

Embedding PHP

Comments in PHP and including files

 

CHAPTER 2: PHP variables and constants

Variable names and values

Case sensitivity

Error messages and warnings

Data types in PHP

Using constants in PHP

Integer data type

Floating-point numbers

Bool type (Boolean values)

Null type variable and type checking in PHP

Dynamic variables

 

CHAPTER 3: Operators

Arithmetic operators

Assignment operator and combined operators

Comparison operators

Logical operators

Type cast forcing

Conditional statements (preview)

Base converting functions and bitwise operators

Operator precedence

The ternary operator

 

CHAPTER 4: PHP Arrays at a glance

Numeric indexed arrays, runtime array size change

Associative arrays

How to add new key => value pairs to associative arrays?

How to format output data?