There are many Composer-based libraries specifically for Luhn checks. Lightweight, fast, open-source. C. Custom Luhn Function (Simple Script) For simple applications, a custom script is efficient.
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. cc checker script php best
If the total modulo 10 is 0, the number is syntactically valid. the number is syntactically valid.