Beginner's Guide to PHP language _php tutorial

PHP language After a long time of development, many users are very familiar with the PHP language, here I publish a personal understanding, and discuss with you. More concerned about the network of friends, especially those concerned about the site building technology friends, may have heard of PHP. PHP is a simple but powerful programming language designed to dynamically create HTML content.

PHP itself is a simple and powerful language. The PHP language has core features such as powerful string and array processing capabilities, while greatly improving the support for object-oriented programming (PHP5 and above). By using standard and optional extensions, PHP applications can connect more than 10 databases such as MySQL or Oracle, draw, create PDF files, and create parsing XML files. You can also use the C language to write your own PHP extension module. For example, provide an interface function for PHP in a code base that already exists. You can also run PHP under Windows, use COM to control other Windows applications such as Word and Excel, or use ODBC to connect to a database.

At home, PHP once and Microsoft's ASP, is commonly used in network programming language. ASP3.0 now has been abandoned by Microsoft, no longer updated, perhaps some people will think: PHP should be a fast-dying thing, right?

However, contrary to the fact, PHP not only in the rapid development, the ASP far behind, and gradually become the Internet is now the most widely used, the most popular language.

According to the survey of the Netcraft website (http://www.netcraft.com), there are now more than 23 million Web servers worldwide using PHP (the world's top One-fourth global sites, the number of global sites including all static sites around 100 million). From Netcraft's data, PHP has developed rapidly this year and is gaining momentum. PHP ranks top five, according to Tiobe World's most popular programming language rankings (http://www.tiobe.com/tpci.htm).

According to the data provided by the programming PHP Note 1, the number of programmers currently using PHP worldwide has reached 2.5 million. The PHP language itself has a very large development team, with more than 450 developers, who submit more than 1 million lines of code through CVS. The PHP community is the most active development community in the world, with tens of millions of people sharing code, promoting PHP languages, helping each other, and building a number of well-known projects. In fact, the world's

The "LAMP" (linux+apache+mysql+php) technology portfolio is now the most popular combination of web technologies. Since the software is free, anyone using a lamp can set up a personal site or a commercial site that belongs to them for free. And, the software is open source code, you can easily download to someone else's written code, installed on their own site.

Of course, PHP is not only able to run on Linux, in fact, PHP supports all the current major operating systems, such as windows, a variety of UNIX systems. Most Chinese netizens use the Windows operating system, and even the server market is the majority of Windows systems (this is rare in the world). PHP can also work well with the IIS server on the Windows operating system. Recently, Microsoft also signed an agreement with Zend to increase support for PHP for Windows Server 2003 and its future version Longhorn.

Simplicity is the reason that PHP is so successful. Simplicity equals a small amount of code and a shorter development cycle. Developers and companies can often use PHP to complete projects in a short time, while in other languages it can take several times.

As Google's Adam Bosworth said:

"In the world of programming, there is an unrecognized war that happens every day. It is a war between ordinary people and computer scientists. It's a war between people who want to write code in a simple, flexible, humane way and who want to write code in a clean, clear, and correct way. It's a war between PHP and C++/java. ”

The future of PHP is very bright, and currently major platform vendors such as Microsoft, IBM, Oracle, MySQL, Intel, and Redhat all recognize and support PHP. Zend Company has partnered with a number of leading companies and members of the PHP community to launch a new collaborative project, collaboration project, to enable PHP to reach a new level by creating an enterprise-class, standardized Web application Development framework and development environment. The main content of the project is the Zend PHP framework and the Eclipse PHP IDE.

Although China and developed countries in Europe and the United States, the PHP penetration gap is huge, but with the new wave of network and open-source culture, PHP in the domestic rapid development. We believe that more people will understand the open source, understand php,php will play a more important role in China's Internet construction.

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