I have a Drupal module which allow regex check of a text field. To check a valid birth year of 4+ years old, the valid range is year 1900 to 2006.
So assume the input string must be 4-char long. What's the regex to check the string is in that range? Thanks!
这应该可以解决问题:
"^(19[0-9]{2}|200[0-6])$"
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