Php Credit Card Validator Laravel Package

Product Decisions This Supports

• Checkout / payment-form feature scoping: this package covers the "pre-flight" validation layer of card entry — card number format, Luhn checksum, CVC length and numeric-only content, and expiry date — which is the cheapest place to reduce failed authorization attempts and support tickets before any gateway call. It informs whether card validation is a week-one feature or a fast-follow.
• Build vs. buy for the validation layer: it answers the "do we hand-roll Luhn + BIN regexes?" question with a resounding no for the regex portion. Adopting it (or a maintained equivalent) removes roughly 100–300 lines of edge-case-prone code from the roadmap and shifts engineering effort to the differentiators: tokenization, 3-D Secure, retry logic, saved payment methods.
• Client-side vs. server-side validation split: because this is a server-side PHP library, it complements (not replaces) a JS form validator. This shapes the roadmap item "progressive validation at the form, authoritative validation at the API" and defines where each ticket lands. The new integer-expiry support means the common Laravel pattern (month/year selectors posted as int) now validates without glue casting code — a small but real ticket removed.
• Input-hardening scope: 1.0.2 adds a numeric-only check on CVC, closing a gap where a length-only rule would accept "12a". That is a data-hygiene and log-safety win, not a fraud control, and it belongs in the ticket as "tighten boundary validation," not "fraud prevention."
• PCI-scope conversations: the package touches card data only in memory and never persists it. That's a useful data point for a security review — it does not by itself reduce PCI DSS scope, but it supports the argument for a "never let card data reach our DB" architecture.
• Use cases beyond checkout: trial signup flows, admin-entered payment methods, phone/back-office order entry, migration of legacy card-on-file records where you need to distinguish "malformed number" from "closed account" before re-tokenizing.
• Roadmap risk flag — changed since the last assessment: 1.0.2 is the first release in roughly a decade and it directly addresses the two loudest complaints (stale MasterCard BIN ranges, missing tests). That downgrades the risk from "adopt a dead dependency" to "adopt a sporadically maintained one." It does not create a maintenance guarantee. Keep the wrapper-and-pin discipline and put a lightweight quarterly review on the roadmap rather than a full replacement project — but the replacement ticket should stay open, just repriced.

When to Consider This Package

Good fit when:

• You are on PHP 7.x/8.x with Composer and want a zero-dependency, MIT-licensed validator with no service contract, no API key, and no vendor onboarding — a genuinely low-friction pull-in for a Laravel app.
• Your need stops at syntactic validation: reject obviously bad numbers, catch typos and fat-fingered transpositions (Luhn is excellent at single-digit errors), reject non-numeric CVC, flag expired cards, and give the user a friendly inline error before you ever call the gateway.
• Your card mix is MasterCard-heavy or you only need to know a number is plausible. The 1.0.2 release refreshes MasterCard BIN ranges specifically; that is the one network whose staleness was actively fixed. Treat the other brand regexes as still being at their pre-1.0.2 vintage.
• You are building an internal tool, a prototype, an MVP, or a non-critical path (admin order entry, CSV import sanity-check) where a partly stale BIN table is tolerable.
• You want validation logic that is trivially unit-testable and mockable behind your own CardValidator interface — the package is small enough to wrap and later swap without touching call sites, and it now ships its own unit tests, which lowers the cost of forking and gives you a baseline to run your own fixtures against.
• You are handling multiple card brands and want basic brand detection (Visa/MasterCard/Amex/Discover/JCB/Diners) to drive UI affordances like "Amex expects 4-digit CVC."

Look elsewhere when:

• Network/BIN currency matters beyond MasterCard. One BIN refresh is a fix, not a policy. Visa, Amex, Discover, JCB, and Diners ranges have not been demonstrably revisited, and there is no published cadence suggesting they will be. If your issuer mix is broad or global, stale ranges remain a customer-facing failure mode ("my card is valid but your site says no") even after 1.0.2.
• You need maintenance guarantees. A single release after a long gap is a signal, not a commitment: no SLA, no CVE response process, no named maintainer, no published PHP-version support matrix, and no stated release cadence. Security and compliance reviewers who require support terms will still fail this package — they will just fail it with more argument now.
• You need anything past format validation: 3-D Secure/SCA, tokenization, AVS, gateway-specific rules, BIN lookup for issuer country/funding type (debit vs. credit), or co-badged card handling. Those are gateway or dedicated BIN-data concerns.
• You're already inside a gateway SDK. Stripe, Braintree, Adyen, and Mollie clients ship their own tokenization flows that make local card validation mostly cosmetic. Adding a second source of truth can produce contradictory errors.
• Your call sites pass loosely-typed input. 1.0.2 tightens CVC validation and changes accepted argument types for expiry. Both are sensible, but the CVC tightening shipped in a patch version, which tells you not to trust patch bumps as compatibility-safe. Re-run your fixtures before upgrading.

If you adopt: pin the exact version in composer.json (do not float on ^1.0), wrap it behind your own validation rule/interface (a Laravel Rule object or form request), and keep a maintained fork or in-house Luhn implementation ready as a one-day swap. Add a smoke test asserting your known-good card set passes — including cards from every brand you accept, not just MasterCard — so a stale regex is caught by CI rather than by customers. Upstream's new unit tests are a useful starting fixture; fork them into your suite so the baseline survives even if you swap the implementation.

How to Pitch It (Stakeholders)

To executives (30 seconds): Card validation is table stakes for any checkout, and it is not where our differentiation lives. This is a small, free (MIT), self-contained PHP library that catches malformed card numbers, wrong check digits, bad CVC content, and expired dates before we call a payment processor — fewer declined transactions, fewer support tickets, less engineering time on code we'd otherwise write and maintain ourselves. Since the last review it has shipped its first release in years, and that release went straight at our two biggest concerns: refreshed MasterCard card ranges and an actual test suite. It is not a supported product, so we'll wrap it behind our own interface and pin the version so it can be swapped in a day. My recommendation: use it now to ship faster, and keep a low-cost quarterly "review the validator" line on the roadmap instead of a replacement project.

To engineering: It's a small, dependency-free Composer package: regex brand detection plus Luhn, CVC length and numeric-only checks, and expiry. No DB writes, no card storage, no persistence — so no PCI scope expansion. 1.0.2 adds refreshed MasterCard BIN ranges, a numeric-only CVC check, and acceptance of integer expiry values, plus upstream unit tests. Bind it behind a CardValidator interface and a Laravel validation rule rather than calling it from controllers, pin the exact version, and re-run your fixture set before upgrading — the CVC tightening landed in a patch bump, so treat patch releases as potentially behavior-changing. Extend the upstream test suite with real-world numbers from every brand we accept; only MasterCard ranges were refreshed, so Visa/Amex/Discover/JCB/Diners regexes should still be treated as untrusted. The Luhn check is the durable part; the brand ranges are not.

To security/compliance: This is format validation, not authorization, and it does not make us PCI compliant. It does keep card numbers out of logs and databases by enforcing validation at the boundary, and it's auditable in an afternoon. The material risk is the dependency's maintenance posture. That risk has improved — there is now a current release and a test suite, which also makes an internal fork more viable — but it remains an unmaintained-by-conventional-standards package with no SLA and no CVE process. Mitigate with exact version pinning, an internal wrapper, a fork-ready posture, and a scheduled review.