= 2004 && $firstFourDigits <= 2018) {
return ['valid' => $cleanedInput];
} else {
return ['invalid' => $cleanedInput, 'reason' => 'First four digits are not within 2004-2018'];
}
} else {
return ['invalid' => $cleanedInput, 'reason' => 'Not 17 digits long'];
}
}
$validResults = [];
$invalidResults = [];
$error = null;
// Validate the request method and CSRF token
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
if (!isset($_POST['csrf_token']) || $_POST['csrf_token'] !== $_SESSION['csrf_token']) {
$error = "Invalid CSRF token.";
} else {
$inputData = filter_input(INPUT_POST, 'input_data', FILTER_SANITIZE_STRING);
$rows = explode("\n", trim($inputData));
foreach ($rows as $row) {
$result = processInput($row);
if (isset($result['valid'])) {
$validResults[] = $result['valid'];
} else {
$invalidResults[] = $result;
}
}
}
}
// Function to create a downloadable file link
function createDownloadLink($filename, $data) {
$filepath = sys_get_temp_dir() . '/' . $filename;
file_put_contents($filepath, implode("\n", $data));
return $filepath;
}
// Handle the download of valid results
if (isset($_POST['download_valid']) && $_POST['csrf_token'] === $_SESSION['csrf_token']) {
$filepath = createDownloadLink('valid_results.txt', $validResults);
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="valid_results.txt"');
readfile($filepath);
exit;
}
// Handle the download of invalid results
if (isset($_POST['download_invalid']) && $_POST['csrf_token'] === $_SESSION['csrf_token']) {
$invalidOutput = array_map(function ($item) {
return $item['invalid'] . " - " . $item['reason'];
}, $invalidResults);
$filepath = createDownloadLink('invalid_results.txt', $invalidOutput);
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="invalid_results.txt"');
readfile($filepath);
exit;
}
?>
Input Validator
Input Validator
Results
Input Rows:
Valid Output Rows:
Invalid/Discarded Rows:
0): ?>
Discarded Inputs: