This regex validates all dates between 01/01/1900 and 12/31/2099, including leap-year validation. It follows a mm/dd/yyyy format, and enforces two-digit month/year formats.

Selects the string after the $ sign

A variety of BEM flavoured regex.

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An invoice number always has 10 digits, starting with a '9' (e.g. '9400065741'). But a number should also be found if it contains white-spaces. These numbers should also be found: '9400065741' ' 94 00065741'...

(?=\w{5,})(?=\D*\d{2}$)

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