by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

PHP integrates another concept of object-oriented programming: abstract classes. This course defines and introduces the concept of abstract classes. We will present what abstract classes, what they are used for development and how to declare and use them. Finally, we will study the particular case of final classes and methods involved in the security of the code object oriented programming.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

We studied in previous articles the magiques__clone () methods, __set (), __get () and __call (). PHP adds to recent two additional magic methods __sleep () and __wakeup () that allow overloading the native process of serialization and de-serialization of PHP data. That's what we'll explain in tutorial with some concrete examples and easy to understand.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

PHP since version 5 implements magic methods you can implement in your classes, which will be automatically called by your script. Magic method __clone () is one of these methods. The following tutorial introduces the operation of the magic method __clone () based on simple and concrete examples.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

PHP has made a big step forward in object-oriented programming with version 5. Since this version, it allows to implement methods in predefined behavior by PHP. These methods are called "magic methods" __call () is one of them.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

PHP has made a big step forward in object-oriented programming with version 5. Since this version, it allows to implement methods in predefined behavior by PHP. These methods are called "magic methods", the __set () and __get () are included.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

The visibility of the properties and methods of an object is one of the basic features of object-oriented programming. This tutorial aims to introduce different levels of visibility offered by the object model PHP 5. We will review them one by one through practical examples and we will bring some good practices to adopt when used.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

Object-oriented programming (OOP) was integrated into the PHP version 3 in 1998, including basic class and object supportIn 2000, PHP4 added some functionality, but suffered from its non-intuitive handling of references with objects handled like value types.

Finally, in 2004, PHP5 included an extensive rewrite of object handling with the introduction of Zend Engine 2, featuring a comprehensive feature set and increased performance.

But at that time, the PHP object model was far too brief. We could really talk about object oriented programming. PHP Developers are then examined the issue and improved the object model that, since version 5, has nothing to envy to other objects languages like Java or C++.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

PHP can manipulate the images for many years and for applying special effects to it, we were often forced to write many lines of code. Since PHP version 5, a new feature has appeared: "imagefilter" to achieve effects with the same quality as designs software.
This function allows you to customize the look of your site and also to achieve a different picture gallery of others.
So we'll see:
• The basics
• The ImageFilter () function
• How to play with some filters?

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

The vast majority of dynamic websites or applications need to reuse parts of identical code in several places of the same page, or in several different pages. This is the case for example libraries of user functions or configuration files. Rather than rewrite each time the code, there are functions (actually language constructs) that can import and execute the code reuse in the page. These are the include () and require ().

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

Since PHP4, we hear a lot about sessions. Many people using PHP still unaware what they are and what they are for. Others, however, do not know how to use it wisely. This tutorial is an approach to theoretical and practical sessions. They will be presented by means of a simple example throughout this course. This is a space site secured by authentication.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

Cookies are small files that can be written by a PHP script or other languages, such as JavaScript, on the visitor's computer. The cookie mechanism was invented by Netscape in the bearing purposes to some HTTP protocol weaknesses but also to extend the possibilities of relationship between the client and the website. Their function is storage, for a given period, of information relating to the user (his nickname, his last login date, age, preferences ...).



 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

That says "dynamic website" generally called "forms" and therefore treatment of these. PHP was invented especially for this type of task and that is what we will discuss in this new tutorial. We will learn to use the forms via the superglobal arrays $ _GET and $ _POST. We will also determine the difference in the use of each of them.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

As in most programming languages, it is possible to create your own PHP functions that complement the native functions. This allows performing particular operations that are redundant in the application, and solve a problem by breaking it into several small problems and solutions.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

This tutorial follows the one on conditional statements. The loops are a trivial principle of computing that any developer must master. They are, too, some of the control structures. PHP 4 into account, each with its specific characteristics: for (), while (), do-while () and foreach ().

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

This chapter presents two important principles to assimilate: the condititions and loops. This first concept is especially important since it allows to perform a series of actions depending on the conditions being tested. As for the second, it allows to repeat N times a series of actions, and in very short time (at human scale). The advantage of the arrival of the computer is to make life easier for users performing tasks that they can not fulfill. If you ask a person to count from 0 up to 1000, it will take several minutes while a computer will process this transaction in milliseconds (or even a few nanoseconds as its computing power). Then immediately understand the benefits of computing.



 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

There are 12 types of operators in PHP. We will review them using summary tables. Let's start by arithmetic operators.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

PHP provides structured data types that are more commonly called "tables". What do they do exactly? How do we handle?



 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

Among the most important concepts of the programming is the concept of variable. Like any language, PHP handles data. For a dynamic site, these data are variables. In addition, they may be of different types, such as text string, as you have used the echo statement in the form of whole or decimal numbers or as true or false boolean values (TRUE or FALSE). These basic types are the most used, but there are others who may be compounds types, such as arrays and objects, or specific types, as resource or NULL. . We will see that the variable part of the mechanisms which make a dynamic application. Let's get into the thick of it.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

In programming, PHP allows you to define constants, it is often necessary to define data structures whose value must not change during program execution. These data structures are typically what is known constants. The most famous mathematical constants is for instance the PI number whose value is approximately 3.1415926535898. Note that PHP natively integrates the M_PI constant. This can then be used for any calculation of circumference.

 
by Dinesh Thakur Category: PHP (Hypertext Preprocessor)

Comments are only intended for the programmer. They will not be displayed or executed. They identify as part of the program without interfering in the program. Comments are among the trivial elements in the success of a program; and this is why it is important to use them with intelligence.

 

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About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.