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Archive for the ‘PHP’ Category

Writing Website Scrapers in PHP

February 26th, 2008 24 comments

This article discusses about how to write a website scraper using PHP for web site data extraction. The concepts taught can be applied and programmed in Java, C#, etc. Basically any language that has a powerful string processing capability. This article will teach you the basics of website scraping. The article will further cover a tutorial to find web ranking from Yahoo.com search engine.

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7 habits of highly effective freelance programmers

February 18th, 2008 11 comments

I have developed these based on my freelancing experience. Though I have discontinued freelancing, but would like to share my practices with you. These are basic practices and have been developed over time with experience (good and bad). Please feel free to leave your experiences and comment on this article.

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PHP 5 Tutorial – Handling Exceptions in PHP5

February 14th, 2008 1 comment

In this tutorial we will cover the following:

  • What is an exception?
  • The use of a try…catch block
  • Anatomy of PHP5 Exception class
  • Extending the Exception class
  • A note on unhanded exceptions

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PHP 5 Tutorial – Final Class and Methods

February 14th, 2008 6 comments

In this PHP tutorial we will understand the following:

  • Meaning of Final Class
  • Meaning of Final Method
  • When to declare a class as final
  • When to declare a method as final

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PHP 5 Tutorials – Static Data Members and Methods

February 12th, 2008 2 comments

In this tutorial you will learn all about static data members and methods

  • Meaning of static data members
  • Meaning of static methods
  • Defining static data members in PHP5
  • Defining static methods in PHP5
  • Accessing static data members in PHP5
  • Accessing static methods in PHP5
  • Rules to keep in mind for static methods

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PHP5 OOPS Tutorials – Polymorphism

February 11th, 2008 10 comments

In this tutorial we will learn the following:

  • Meaning of Polymorphism
  • Why method polymorphism cannot be achieved in PHP
  • PHP 5 Object Polymorphism

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PHP5 Tutorials – Abstract Class and Interface

February 3rd, 2008 8 comments

In this post, we learn what is an abstract class and an interface.

  • What is an Abstract Class?
  • Private methods cannot be Abstract
  • What is an Interface?
  • Defining an Interface
  • Abstract Class v/s Interface

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PHP Script to print nested array

November 16th, 2007 5 comments

Here is a script that will allow you to print a nested array upto any level. Can I request you to please review this and let me know how this can be further optimized.

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Categories: PHP, PHP Code Examples Tags:

PHP5 Tutorial – Inheritance in PHP5

November 15th, 2007 2 comments

In the tutorial we will understand what is Inheritance in general and how to inherit classes in PHP5.

Definition of Inheritance:

Inheritance is the mechanism of deriving a new class from an existing class. It allows a sub-class / child class to share/inherit the attributes and behaviors of a base-class or parent class. These inherited attributes and behaviors are usually modified by means of extension.

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Categories: PHP, PHP Tutorials, PHP5 OOPS Tutorials Tags:

PHP5 Tutorial – Defining Class Constants

November 15th, 2007 1 comment

In PHP4 the only constants that we would declare were global constants. In PHP5 it is possible to define a class level constant. These constants are specific to the class and hence don’t clutter the global level constant space.

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Categories: PHP, PHP Tutorials, PHP5 OOPS Tutorials Tags: