What is the function in PHP that can be used to delete files from the server, and what precautions should be taken when using it?

To delete files from the server in PHP, you can use the `unlink()` function. However, it is important to take precautions such as validating user input to prevent unauthorized file deletion and ensuring proper permissions are set on the files being deleted. 

$file_path = 'path/to/file.txt';

if (file_exists($file_path)) {
    if (unlink($file_path)) {
        echo "File deleted successfully.";
    } else {
        echo "Error deleting file.";
    }
} else {
    echo "File does not exist.";
}

Keywords

PHP function delete files precautions

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