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This article mainly explains "how to copy, delete, rename and create a temporary file in PHP". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor learn how to copy, delete, rename a file and create a temporary file in PHP.

In the previous article to bring you "three minutes to teach you how to write a file in PHP", which describes in detail how to write a file in PHP, this article continues to bring you some little knowledge of the PHP file system, such as creating a temporary file, how to copy and delete a file. I hope I can help you!

How do I create a temporary file?

The files we wrote and created in our last article are permanent, and in our daily development use, creating a temporary file is also necessary and very useful.

Create a temporary file that can be deleted after we use it. We don't need to maintain the deletion status of the file.

Then we need to use the resource tmpfile () function, as an example:

Output result:

As you can see from the example above, the resource tmpfile () function creates a temporary file that returns the resource type. The file is deleted when it is closed.

How do I rename a file?

When we deal with files on a daily basis, we not only need to create files, but sometimes we need to rename files that have already been created, so let's take a look at how to rename files.

That's when we use rename. The syntax format is as follows:

Bool rename ($old name, $new name)

Examples are as follows:

First, I created a file called test.txt

Next, enter:

After outputting the results, the file formerly named test.txt is now:

As you can see from the example above, the file can be renamed through rename.

How do I copy files?

Copying files is also a common operation in our daily life, so how should it be implemented?

Bool copy (source file, target file)

Examples are as follows:

As in the example above, I first created a test.txt file

Through copy, output the result:

From the above results, we know that files can be copied through copy ().

How do I delete a file?

To delete a file is to delete a file in the specified path, but this deletion is a direct deletion. You are using a windows computer and you will not see this file in the Recycle Bin. You will find that the file has just disappeared.

Bool unlink (a file with a specified path)

Examples are as follows:

Output result:

As you can see from the above example, files can be deleted through unlink.

At this point, I believe you have a deeper understanding of "how to copy, delete, rename files and create a temporary file in PHP". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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