What are some best practices for adding buttons to a PHP script for deleting and downloading files?

When adding buttons to a PHP script for deleting and downloading files, it is important to ensure proper validation and security measures are in place to prevent unauthorized access. Use POST requests for deleting files to prevent accidental deletions and ensure that only authorized users can access the functionality. For downloading files, consider using a combination of server-side validation and headers to securely serve the files to users. 

// Delete file button
if(isset($_POST['delete'])){
    $fileToDelete = $_POST['fileToDelete'];
    
    // Perform validation and security checks here
    
    if(unlink($fileToDelete)){
        echo "File deleted successfully.";
    } else {
        echo "Failed to delete file.";
    }
}

// Download file button
if(isset($_POST['download'])){
    $fileToDownload = $_POST['fileToDownload'];
    
    // Perform validation and security checks here
    
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename="'.basename($fileToDownload).'"');
    readfile($fileToDownload);
}

Keywords

file deletion file download PHP script button implementation security measures

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