Chapter 19. Using Network and Protocol Functions
In this chapter, we look at the network-oriented functions in PHP that enable your scripts to interact with the rest of the Internet. A world of resources is available out there, and a wide variety of protocols is available for using them.
Key topics covered in this chapter include
Examining available protocols
Sending and reading email
Using other websites via HTTP
Using network lookup functions
Using FTP
Examining Available Protocols
Protocols are the rules of communication for a given situation. For example, you know the protocol when meeting another person: You say hello, shake hands, communicate for a while, and then say goodbye. Different situations require different protocols. Also, people from ...
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