In this tutorial, we’re going to access file in PHP. And primarily we’re going to focus on this lesson in dealing with
fopen (filename, mode) so we’re going to open a file and we’re to provide a filename and we’re going to tell it what mode is should open it. And remember using “fopen” opens up a file whether it exists or not so we will create it if necessary.
At this time, we will know first how to deal with FILE ACCESS MODES:
Below are the three basic ways to open a file and the corresponding character that PHP uses. This is used to specify the intentions when you open a file.