Regular Expressions 101

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Credit Card Match

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Regular Expression
pcre

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(?<!\w)((?<visa>4\d{3}([\ -]?\d{4})(?3)(?3)([\s-]?\d{3})?)|(?<mastercard>(?:5[1-5]\d{2}|222[1-9]|22[3-9]\d|2[3-6]\d{2}|27[01]\d|2720)(?3)(?3)(?3))|(?<amex>3[47]\d{2}([\s-]?\d{5})\d(?7))|(?<discover>6(?:011|[45]\d{2}|22[1-9]|2[4-6]\d|28[2-8])(?3)(?3)(?3)(?:\d{1,3})?)|(?<dc>3(?:[68-9]\d{2}|095|0[0-5]\d)(?:([\s-]?\d{6})|(?3)(?3))(?3)(?4)?)|(?<jcb>35[2-8]\d(?3)(?3)(?3)(?4)?)|(?<dankort>5019(?3)(?3)(?3))|(?<other>(?:5[06-9]\d{2}|5[6-9]\d{2}|6[0-9]\d{2})(?:(?3)(?3)(?3)(?4)?|(?10)(?7))))(?!\w)
/
gm

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Submitted by anonymous - 2 years ago