function getCardType($cardNumber) 5[0-9]2)[0-9]12$/', 'JCB' => '/^(?:2131 Use code with caution. Step 3: Combining into a Full CC Checker Script
A standard PHP checker typically includes these three functional layers: Card Type Detection (Regex)
If you're implementing credit card validation for legitimate purposes, follow these guidelines: cc checker script php
Instead of building custom validation from scratch, use well-maintained Composer packages:
: Reversing the number and doubling every second digit to calculate a checksum. They convert sensitive card information into secure tokens,
Creating or using scripts to check large lists of credit card numbers ("carding") is illegal and a violation of PCI DSS compliance
// This is a SIMULATED response // In production, you'd call an API like binlist.net $simulatedData = [ 'bin' => $bin, 'scheme' => $this->getCardType($cardNumber), 'country' => 'US', 'bank' => 'Example Bank', 'type' => 'CREDIT', 'level' => 'STANDARD' ]; function getCardType($cardNumber) 5[0-9]2)[0-9]12$/'
These services handle the data security for you. They convert sensitive card information into secure tokens, ensuring your server never touches the raw card details directly.