PHP 7 Zend Certification Study Guide: Ace the ZCE 2017-PHP Exam

© Andrew Beak 2017

Andrew BeakPHP 7 Zend Certification Study Guidehttps://doi.org/10.1007/978-1-4842-3246-0_8

8. Input-Output

Andrew Beak^1 

(1)

Grafham, Cambridgeshire, UK

 

In this chapter, we’re going to be looking at how PHP manages input-output. We’ll be examining how we can read from or write to the file system as well as the network.

Files

There are two main groups of functions to deal with files: those that work with file resources, and those that work with a filename.

Remember that a resource is a type of variable that can’t be stored directly in PHP. A file resource is an operating system file handle.

All the functions that deal with file resources begin with a single f letter and then have a verb describing their function. For ...