Regular Expressions 101

Community Patterns

Community Library Entry

4

Regular Expression
Created·2016-07-09 21:06
Flavor·PCRE (Legacy)

/
(^5[1-5]|^4|^3[47])|(^6011|65|64[4-9]|622(1(2[6-9]|[3-9]\d)|[2-8]\d{2}|9([01]\d|2[0-5])))\d+
/
g
Open regex in editor

Description

MasterCard - ^5[1-5]\d+ Visa - ^4\d+ Amex - ^3[47]\d+ Discover - 6011|65|64...

Submitted by Eric Foster