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Asked: 2026-05-27T04:10:03+00:00

I need a Regex expression for PHP that finds exactly 8 characters in a

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I need a Regex expression for PHP that finds exactly 8 characters in a string. The 8 characters have to be composed of both letters and numbers and no special characters.

EX: A1234567 or A123456A
NOT 12345678 or AAAAAAAA

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1 Answer

  1. Editorial Team

    You can do it with lookaheads:

    "/^(?=.*[A-Z])(?=.*[0-9])[A-Z0-9]{8}$/i"

    See it working online: ideone

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