Validating credit cards requires a two-layer security approach.
: This script only checks if the number is mathematically correct . It cannot tell you if the card is active, has funds, or belongs to a real person.
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
function getCardType($cardNumber) 2720)[0-9]12$/', 'American Express' => '/^3[47][0-9]13$/', 'Discover' => '/^6(?:011 Use code with caution. Step 4: Best Practices for API Integration cc checker script php best
Instead of attempting a full charge, you can create a Payment Intent with a $0 amount. This command instructs Stripe to contact the bank and run a standard authorization check without capturing any funds. This is the ideal way to "check" a card. Alternatively, a $1 authorization is also common for verification purposes.
class CreditCardChecker public static function validate($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($number) 5[0-9]2)[0-9]12$/" ]; foreach ($patterns as $type => $pattern) if (preg_match($pattern, $number)) return $type; return "Unknown"; Use code with caution. Copied to clipboard
cc-checker-php
function isValidLuhn($number) settype($number, 'string'); $sum = 0; $len = strlen($number); $offset = 1 - ($len % 2); for ($i = 0; $i < $len; $i++) if (($i + $offset) % 2) $sum += $number[$i]; else $double = $number[$i] * 2; $sum += ($double > 9) ? $double - 9 : $double; return ($sum % 10 === 0); Use code with caution. 2. Advanced Card Validation: Identifying Type and BIN
The best PHP credit card checker script balances rigid algorithmic validation with a seamless frontend user experience. By implementing an object-oriented class that utilizes the Luhn algorithm, regular expression brand matching, and smart input sanitization, you can optimize your checkout funnel, mitigate standard fraud vectors, and protect your platform's bottom line. If you want to tailor this script to your project, tell me:
Here’s a simple example of how to use it: // Example Usage: $cardNumber = '4111111111111111'
// Example Usage: $cardNumber = '4111111111111111'; // Example test number (Valid Visa format)
The Definitive Guide to Building the Best CC Checker Script in PHP 'American Express' => '/^3[47][0-9]13$/'
To create the "best" script, we must go beyond just the Luhn algorithm. We need to identify the card issuer and check the date.
Malicious actors often target poorly protected CC checker scripts to test stolen card databases. This is known as carding. Protect your script with these steps: