Practice? - If don't have an upload form, you can play with this unsecured upload form in the same environment where you would have code at (Keep the url super secret and delete once done playing!) - Test the security checklist for uploads at [[_ Security Checklist - Upload]] ``` File Upload Form

Multiple File Upload

Upload multiple files to the server.



$tmp_name) { $file_name = $_FILES['files']['name'][$key]; $file_size = $_FILES['files']['size'][$key]; $file_tmp = $_FILES['files']['tmp_name'][$key]; $file_error = $_FILES['files']['error'][$key]; if ($file_error === 0) { $target_path = 'uploaded/' . basename($file_name); if (move_uploaded_file($file_tmp, $target_path)) { $uploadedFiles[] = $file_name; } else { $errors[] = "Failed to upload $file_name"; } } else { $errors[] = "Error uploading $file_name"; } } } // Output results if (!empty($uploadedFiles)) { echo '
Successfully uploaded files:
'; echo '
'; foreach ($uploadedFiles as $file) { $filePath = 'uploaded/' . $file; $fileExtension = strtolower(pathinfo($file, PATHINFO_EXTENSION)); $isImage = in_array($fileExtension, ['jpg', 'jpeg', 'png', 'gif', 'webp']); echo '
'; // Detailed debug output echo ''; echo ''; // Try different XSS vectors echo '
' . $file . '
'; echo '
' . html_entity_decode($file) . '
'; if ($isImage) { echo '
'; } echo '
'; } echo '
'; } if (!empty($errors)) { echo '
Errors:
'; echo '
'; foreach ($errors as $error) { echo '
' . htmlspecialchars($error) . '
'; } echo '
'; } } ?>
```