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My apologies for taking so long to actually get to the point where you get information from files. In this lesson we will teach you how to read data from a file using various PHP functions. Author: tizag.com Code: PHP 4.0 |
As we have mentioned before, when you open a file for writing with the paramater 'w' it completely wipes all data from that file. This action is also referred to as "truncating" a file. Truncate literally means to shorten. Author: tizag.com Code: PHP 4.0 |
Before you can use PHP to manage your uploads, you must first build an HTML form that lets users select a file to upload. See our HTML Form lesson for a more in-depth look at forms. Author: tizag.com Code: PHP 4.0 |
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In the previous lesson we used the function fopen to create a new file. In this lesson we will be going into the details of this important function and see what it has to offer.
Author: tizag.com Code: PHP 4.0 |
So far we have learned how to open, close, read, and write to a file. However, the ways in which we have written to a file so far have caused the data that was stored in the file to be deleted. Author: tizag.com Code: PHP 4.0 |
The next logical step after you have opened a file and finished your business with it is to close that file down. You don't want an open file running around on your server taking up resources and causing mischief! Author: tizag.com Code: PHP 4.0 |
You know how to create a file. You know how to open a file in an assortment of different ways. You even know how to read and write data from a file! Now it's time to learn how to delete files. In PHP you delete files by calling the unlink function. Author: tizag.com Code: PHP 4.0 |
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Now that you know how to open and close a file, lets get on to the most useful part of file manipulation, writing! There is really only one main function that is used to write and it's logically called fwrite. Author: tizag.com Code: PHP 4.0 |
Before you can do anything with a file it has to exist! In this lesson you will learn how to create a file using PHP. In PHP, a file is created using a command that is also used to open files. Author: tizag.com Code: PHP 4.0 |
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