Created
February 12, 2013 15:03
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MasterCard: Must have a prefix of 51 to 55, and must be 16 digits in length.
Visa: Must have a prefix of 4, and must be either 13 or 16 digits in length.
American Express: Must have a prefix of 34 or 37, and must be 15 digits in length.
Diners Club: Must have a prefix of 300 to 305, 36, or 38, and must be 14 digits in length.
Discover: Must have…
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| function credit_card_type($ccNum) | |
| { | |
| if (ereg("^5[1-5][0-9]{14}$", $ccNum)) | |
| return "Mastercard"; | |
| if (ereg("^4[0-9]{12}([0-9]{3})?$", $ccNum)) | |
| return "Visa"; | |
| if (ereg("^3[47][0-9]{13}$", $ccNum)) | |
| return "American Express"; | |
| if (ereg("^3(0[0-5]|[68][0-9])[0-9]{11}$", $ccNum)) | |
| return "Diners Club"; | |
| if (ereg("^6011[0-9]{12}$", $ccNum)) | |
| return "Discover"; | |
| if (ereg("^(3[0-9]{4}|2131|1800)[0-9]{11}$", $ccNum)) | |
| return "JCB"; | |
| } |
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