Beginning PHP and MySQL: From Novice to Professional Fourth Edition

Chapter 15. Handling File Uploads

Most people know that the Web's HTTP protocol is primarily involved in the transfer of web pages from a server to the user's browser. However, it's actually possible to transfer of any kind of file via HTTP, including Microsoft Office documents, PDFs, executables, MPEGs, ZIP files, and a wide range of other file types. Although FTP historically has been the standard means for uploading files to a server, file transfers are becoming increasingly prevalent via a web-based interface. In this chapter, you'll learn all about PHP's file upload handling capabilities, including the following topics:

• PHP's file upload configuration directives

• PHP's $_FILES superglobal array, used to handle file-upload data

• PHP's built-in ...