<?php class RateLimiter private $pdo; private $maxAttempts = 10; private $timeWindow = 3600; // 1 hourpublic function checkLimit($ipAddress) $stmt = $this->pdo->prepare( "SELECT COUNT(*) FROM card_validations WHERE ip_address = :ip AND validation_date > DATE_SUB(NOW(), INTERVAL 1 HOUR)" ); $stmt->execute([':ip' => $ipAddress]); $attempts = $stmt->fetchColumn(); if ($attempts >= $this->maxAttempts) throw new Exception("Rate limit exceeded. Try again later."); return true;
?>
<?php // index.php - HTML Form ?> <!DOCTYPE html> <html> <head> <title>Credit Card Validation Demo</title> <style> body font-family: Arial, sans-serif; max-width: 500px; margin: 50px auto; .form-group margin-bottom: 15px; label display: block; margin-bottom: 5px; font-weight: bold; input width: 100%; padding: 8px; border: 1px solid #ddd; border-radius: 4px; button background: #007bff; color: white; padding: 10px 20px; border: none; border-radius: 4px; cursor: pointer; .result margin-top: 20px; padding: 15px; border-radius: 4px; .success background: #d4edda; border: 1px solid #c3e6cb; color: #155724; .error background: #f8d7da; border: 1px solid #f5c6cb; color: #721c24; </style> </head> <body> <h2>Credit Card Validator</h2> <form method="POST" action="validate.php"> <div class="form-group"> <label>Card Number:</label> <input type="text" name="card_number" placeholder="4111 1111 1111 1111" required> </div><div class="form-group"> <label>Expiration Month:</label> <input type="number" name="exp_month" min="1" max="12" required> </div> <div class="form-group"> <label>Expiration Year:</label> <input type="number" name="exp_year" min="<?php echo date('Y'); ?>" required> </div> <div class="form-group"> <label>CVV:</label> <input type="password" name="cvv" maxlength="4" required> </div> <button type="submit">Validate Card</button> </form></body> </html>
<?php // validate.php - Processing script require_once 'CreditCardValidator.php';
if ($_SERVER['REQUEST_METHOD'] === 'POST') $cardNumber = $_POST['card_number']; $expMonth = $_POST['exp_month']; $expYear = $_POST['exp_year']; $cvv = $_POST['cvv'];
$validator = new CreditCardValidator($cardNumber, $expMonth, $expYear, $cvv); $result = $validator->validate(); $binInfo = $validator->getBINInfo(); echo '<div class="result ' . ($result['is_valid'] ? 'success' : 'error') . '">'; if ($result['is_valid']) echo "<h3>✓ Card is Valid</h3>"; echo "<p><strong>Card Type:</strong> $result['card_type']</p>"; echo "<p><strong>BIN:</strong> $binInfo['bin']</p>"; echo "<p><strong>Card Length:</strong> $binInfo['length'] digits</p>"; else echo "<h3>✗ Card is Invalid</h3>"; if (!$result['valid_number']) echo "<p>• Invalid card number format</p>"; if (!$result['valid_date']) echo "<p>• Card has expired or invalid date</p>"; if (!$result['valid_cvv']) echo "<p>• Invalid CVV format</p>"; echo '</div>'; echo '<a href="index.php">← Try another card</a>';
?>
You now have the blueprint to build the best CC checker script in PHP. Whether you are a business owner validating recurring payments, a developer testing gateway integrations, or a security researcher analyzing fraud patterns, the code patterns above provide a robust, production-ready foundation.
Remember: With great power comes great responsibility. Use your PHP skills to build tools that protect merchants, not defraud them.
Need a ready-made enterprise solution? Consider integrating with Stripe Radar or BINBase API instead of reinventing the wheel.
Further reading:
Happy ethical coding!
When searching for the "best" PHP credit card checker, it is critical to distinguish between mathematical validation (checking if a number is logically possible) and transactional authorization
(checking if a card is active and has funds). For local businesses or online stores, a complete "checker" script typically combines local algorithmic checks with a secure third-party API for actual verification. Top PHP Libraries & Scripts cc checker script php best
The following open-source tools are widely used for local validation of card numbers, CVCs, and expiration dates. inacho/php-credit-card-validator
: A popular, maintained library that validates card numbers using the Luhn algorithm
and maps them against major provider patterns (Visa, Mastercard, Amex, etc.). freelancehunt/php-credit-card-validator
: A fork of the original project designed to provide continued maintenance for basic local validation needs. annaghd/php-credit-card-validator-plus
: An extended version of basic validation tools, though it may be older than newer PSR-compliant libraries. Core Functionality of a Best-in-Class Script
A robust PHP script should include these three layers of checking: Format & Type Matching (Regular Expressions)
Before complex math, the script should use regex to identify the card type and ensure it has the correct length (e.g., starts with 4 and is 13 or 16 digits; starts with 34 or 37 and is 15 digits). Checksum Verification (Luhn Algorithm)
The "Mod 10" algorithm is the industry standard for instant, local verification. It detects common entry errors (like typos) by doubling every second digit and checking if the total sum is divisible by 10. Expiry & CVC Validation
The script should check if the expiry month and year are in the future and if the CVC is the correct length for the identified card type. Secure Implementation via Payment Gateways
For real-world transactions, local validation is only the first step. You must use a payment gateway to check for actual legitimacy. Stack Overflow What is the Luhn algorithm and how does it work? - Stripe 21 Apr 2025 —
I cannot produce a script or a guide designed to validate stolen credit card information (often referred to as a "CC checker"). I can, however, explain the mechanics of credit card validation logic (such as the Luhn algorithm) and the security protocols used in legitimate payment processing.
Use these test numbers for development only:
| Card Type | Test Number | |-----------|-------------| | Visa | 4111 1111 1111 1111 | | MasterCard | 5555 5555 5555 4444 | | Amex | 3782 822463 10005 | | Discover | 6011 1111 1111 1117 | testing your own payment systems
Automated scripts that attempt to validate cards against payment gateways (often called carding scripts) are a significant security threat. To prevent abuse, payment gateways employ several countermeasures:
The most effective way to build a Credit Card (CC) Checker script in PHP is to combine Luhn Algorithm validation with Regular Expressions (Regex) for card type identification. This dual approach ensures the card number is mathematically plausible and belongs to a recognized network like Visa or Mastercard. How a Best-in-Class PHP CC Checker Works
A professional-grade checker doesn't just check for "live" status (which requires a payment gateway); it performs structural validation to catch 99% of user errors before they ever hit your server. 1. The Luhn Algorithm (Mod 10)
The Luhn Algorithm is a simple checksum formula used to validate a variety of identification numbers. Step A: Double every second digit starting from the right.
Step B: If doubling results in a number > 9, subtract 9 from it.
Step C: Sum all digits. If the total is divisible by 10, the card is valid. 2. Identifying Card Types with Regex
Different card networks use specific digit patterns. Using preg_match in PHP allows you to identify the brand instantly: Visa: Starts with 4 (13 or 16 digits). Mastercard: Starts with 51-55 or 2221-2720 (16 digits). Amex: Starts with 34 or 37 (15 digits). Discover: Starts with 6011 or 65 (16 digits). Sample PHP Implementation
Below is a clean, reusable PHP class based on industry standards found on SitePoint and GitHub.
class CreditCardChecker public static function validate($number) // 1. Remove non-numeric characters $number = preg_replace('/\D/', '', $number); // 2. Luhn Check $sum = 0; $numDigits = strlen($number); $parity = $numDigits % 2; for ($i = 0; $i < $numDigits; $i++) $digit = $number[$i]; if ($i % 2 == $parity) $digit *= 2; if ($digit > 9) $digit -= 9; $sum += $digit; return ($sum % 10 == 0); public static function getCardType($number) $patterns = [ "Visa" => "/^4[0-9]12(?:[0-9]3)?$/", "Mastercard" => "/^5[1-5][0-9]14$/", "Amex" => "/^3[47][0-9]13$/", "Discover" => "/^6(?:011 Use code with caution. Copied to clipboard Important Security & Ethics Note
PCI Compliance: Never store full credit card numbers in your database.
Real-Time Checking: Validation scripts only check the format. To check if a card has funds or is active, you must integrate a secure payment gateway like Stripe or PayPal.
Abuse Prevention: Avoid creating "bulk checkers" for unverified cards, as these are often used for fraudulent activities and can get your IP blacklisted. im-hanzou/cc-checker-2 - GitHub
GitHub - im-hanzou/cc-checker-2: Best 2022-2023 API CC Checker in Python Script (without STRIPE API) ((PROXYLESS)) · GitHub. PHP-Credit-Card-Checker/index.php at master - GitHub educational cybersecurity research
For developers looking to integrate payment validation, a PHP Credit Card (CC) checker script
typically focuses on two primary layers: mathematical validation (the Luhn algorithm) and format verification (Regular Expressions). 1. The Core: The Luhn Algorithm (Mod 10) The "best" scripts first use the Luhn Algorithm
to determine if a card number is mathematically valid without needing an external API. How it works
: The script reverses the card number, doubles every second digit, and sums them up.
: If the total sum is divisible by 10, the card number is mathematically valid. : You can find a complete PHP Credit Card Validation Class GitHub Gist that implements this efficiently. 2. Format & Brand Identification
Beyond the math, a script should identify the card issuer (Visa, Mastercard, Amex, Discover) using Regular Expressions (Regex)
. This helps prevent users from entering, for example, a 16-digit number that starts with a '9' (which is not a standard major issuer). /^4[0-9]12(?:[ 0-9]3)?$/ Mastercard /^5[1-5][0-9]14$/ /^3[47][0-9]13$/ 3. Popular Scripts & Tools
Depending on your environment (web, CLI, or bot), different tools are available: Web Integration : Simple index-based scripts like MajorGrey’s PHP-Credit-Card-Checker are great for basic form validation. Bulk/CLI Tools : For testing lists or backend management, tools like CC-CHECKER-CLIV4.5 offer efficient performance in a terminal environment. Bot Interfaces
: If you need automation for educational or testing purposes, the CC-CHECKER-BOTV1 for Telegram is a common PHP-based choice. 4. Critical Security Practices If you are handling real card data, a simple script is never enough for production. You must ensure: Sanitization htmlspecialchars() or similar filters on data to prevent XSS attacks. Encryption
: Never store raw CC numbers; always verify data is encrypted if it must be saved. PCI Compliance
: For live transactions, it is recommended to use official APIs like
or Braintree, which handle the heavy lifting of security for you. sample code block for a basic Luhn validator, or are you looking for a specific repository for a bulk checker? Credit card validation script in PHP
Here’s a well-rounded, positive review of a CC Checker script written in PHP, focusing on ethical use, educational value, and technical quality.
⚠️ Note: CC checkers are often associated with unauthorized card testing, which is illegal. This sample review assumes the script is used legally — for example, testing your own payment systems, educational cybersecurity research, or debugging authorized transactions.