PHP is a server-side scripting language that is easy to learn and use. With very little programming knowledge you can use PHP to build a truly interactive WEB site. This tutorial is not intended to give you a complete understanding of the language, but to get you started developing dynamic web sites as quickly as possible. I assume you have some basic knowledge of HTML (or an HTML editor) and some programming ideas.

Introduction

PHP is one of the tools that allows you to generate dynamic web pages. PHP stands for: Hypertext Preprocessor (PHP: Hypertext Preprocessor). PHP is completely free, no need to spend money, you can learn more from the PHP official site ().

The application of PHP has grown significantly in personal web projects. According to Netcraft's October 1999 report, there were 931,122 domains and 321,128 IP addresses utilizing PHP technology.

Advances of PHP

There are many benefits to using PHP. Of course, the known disadvantage is that because PHP is an open source project, there is no commercial support, and the resulting slow execution speed (until PHP4). But PHP's mailing list is very useful and unless you're running a very popular site like Yahoo! or Amazon.com, you won't notice any difference in PHP's speed. At least I didn’t feel it! Okay, let's take a look at the advantages of PHP:

Learning process

I personally prefer PHP's very simple learning process. Unlike Java and Perl, you don't have to immerse yourself in 100-plus pages of documentation to write a decent program. As long as you understand some basic syntax and language features, you can start your PHP coding journey. If you encounter any trouble later during the coding process, you can read the relevant documents again.

PHP's syntax is similar to C, Perl, ASP or JSP. For those who are more familiar with one of the above languages, PHP is too simple. On the contrary, if you know more about PHP, then it will be easy for you to learn several other languages.

You only need 30 minutes to master all the core language features of PHP. You may already know HTML very well, and you even know how to use editing and design software or manually to create a beautiful WEB site. Since PHP code can be easily added to your site, when you design and maintain your site, you can easily add PHP to make your site more dynamic.

Database Connections

PHP can be compiled with functions to connect to many databases. PHP and MySQL are an excellent combination right now. You can also write your own peripheral functions to access the database indirectly. In this way, when you change the database you use, you can easily change the coding to adapt to such changes. PHPLIB is the most commonly used series of base libraries that can provide general transaction needs.

Scalability

As mentioned earlier, PHP has entered a period of rapid development. It may be difficult for a non-programmer to extend additional functionality to PHP, but it is not difficult for a PHP programmer.

Object-oriented programming

PHP provides classes and objects. Web-based programming work requires object-oriented programming skills. PHP supports constructors, extracted classes, etc.

Scalability

Traditionally, the interaction of web pages is achieved through CGI. The scalability of CGI programs is not ideal because it opens a separate process for each running CGI program. The solution is to compile the interpreter of the language commonly used to write CGI programs into your web server (such as mod_perl, JSP). PHP can be installed this way, although few people are willing to install it CGI this way. Embedded PHP can be more scalable.

More features

In order to be more suitable for web programming, PHP developers have developed many peripheral popular base libraries, which contain easier-to-use layers. You can use PHP to connect to most databases including Oracle, MS-Access, and Mysql. You can draw pictures on flies, write programs to download or display e-mails. You can even complete network-related functions. Best of all, you can choose which features your PHP installation requires.

To quote Nissan's Xterra, PHP can do everything you want it to do and it's omnipotent!