regex in php: multiple possibilities

Question

I need to check that value takes the form (one or two or three any numbers and one or potential two any letters) example: 1B, 1AB, 45C, 791AS, 2, 324. For now I have something like this:

\d{1,3}[A-Z]{1,2}?/

but it does not work. What am I doing wrong?

This is not a duplicate of this question; the questions may relate to the same mechanism but this one contains a concrete example and a specific regex that is not working the way I expect.

So, both parts can go missing. Try `preg_match('~^(?!$)\d{0,3}[A-Z]{0,2}$~', $text, $matches)`. — Wiktor Stribiżew, Aug 13 '19 at 14:52
Show your PHP code. Is the last `/` the delimiter or part of your actual regex? — user3783243, Aug 13 '19 at 14:52

score 1 · Answer 1 · answered Aug 13 '19 at 15:02

1

Why make the part for the characters so hard? You can set the occurrences to {0,2}:

\d{1,3}[A-Z]{0,2}

answered Aug 13 '19 at 15:02

Jerodev

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regex in php: multiple possibilities

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