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Sample Chapter: PHP Pocket Reference


Never worked with PHP? Curious? In this article Tim takes a look at a sample chapter from O'Reillys PHP Pocket Reference. This chapter is a great introduction to PHP and is explained simply and clearly.

Author Info:
By: Tim Pabst
Rating: 5 stars5 stars5 stars5 stars5 stars / 7
June 15, 2002
TABLE OF CONTENTS:
  1. · Sample Chapter: PHP Pocket Reference
  2. · Introduction
  3. · Installation and Configuration
  4. · Including Files
  5. · Arrays
  6. · Control Structures
  7. · Functions
  8. · Showing the Browser and IP Address
  9. · Web Database Integration
  10. · Conclusion

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Sample Chapter: PHP Pocket Reference - Introduction
(Page 2 of 10 )

PHP is a server-side, HTML-embedded, cross-platform scripting language--quite a mouthful. In simpler terms, PHP provides a way for you to put instructions in your HTML files to create dynamic content. These instructions are read and parsed by the web server; they never actually make it to the browser that is displaying the page. The web server replaces your PHP code with the content that the code was written to produce.

PHP can be configured to run either as a server module or as a standalone CGI script. At the time of this writing, the server-module version is only production-ready for the Apache web server on Unix systems. The CGI version runs with all web servers on both Unix and Windows 95/98/NT. On the Windows platform (as of PHP Version 4), the server module is being developed to work with ISAPI, NSAPI, and WSAPI, which means the server module will eventually work with Microsoft's IIS, Netscape's Enterprise Server, and O'Reilly's WebSite. See http://www.php.net for availability details.

The PHP language itself borrows concepts from other common languages, such as C and Perl. If you have some experience with one of these languages, you should feel right at home with PHP. In addition to the core language, PHP provides a wide variety of functions that support everything from array manipulation to regular expression support.

Database connectivity is one popular use for PHP. PHP supports a large number of databases natively and many others are accessible through PHP's ODBC functions. Through this database connectivity, it is possible, for example, to take a company's database of products and write a web interface to it using PHP.

This book provides an overview of the core PHP language and contains summaries of all the functions available in PHP. The material covers PHP 3.0.
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