What is the purpose of the unlink() function in PHP?

Hello, Today, I want to talk about a handy function in PHP: the unlink() function. This function is used to delete a file from the file system, and it’s an important tool to know if you’re working with files in your PHP scripts.

The unlink() function takes a single argument, which is the path to the file that you want to delete. Here’s an example of how you can use the unlink() function to delete a file:


$file = 'example.txt';

if (file_exists($file)) {
    echo "$file has been deleted.";
} else {
    echo "$file does not exist.";


In this example, we first check if the file exists using the file_exists() function. If the file exists, we call the unlink() function to delete it. If the file doesn’t exist, we output an error message.

It’s important to use caution when deleting files, as there is no way to undo the deletion once it has been performed. If you’re working with important files, you should make a backup copy before deleting the original file.

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