CODEWITHSUNDEEP
phpmysqlregex
LordzSpectron
LordzSpectron

Reputation: 36

REGEX PHP ANY DIGITS QUANTITY 0-9

I need to validate a regex where between STRING_{here}G_ can be 0 or even 4 digits, I tried the following regex:

(?<=TEST_[0-9]{0,4}G_).*

But the tester returns the error:

Your pattern contains one or more errors, please see the explanation section above.

And when trying to use manually, using two [0-9], it doesn't get my strings

ABC_TEST_20G_a123-abc1
ABC_TEST_100G_abc1

I need a regex that validates both strings and returns what is after G_ Remembering that the regex must have the "TEST_", it is a string that I need to validate

Upvotes: 0

Views: 290

Answers (1)

Barmar
Barmar

Reputation: 780818

Most regexp engines don't allow lookbehinds to be variable-length, so you can't have a {0,4} quantifier in it.

Instead of a lookbehind, use a capture group to capture everything after this pattern.

TEST_[0-9]{0,4}G_(.*)

Capture group 1 will contain what you want to get.

DEMO

Upvotes: 1

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