正则表达式匹配月份名称后跟年份 [英] Regex to match month name followed by year

问题描述

例如，是否可以使用正则表达式来匹配February 2009"?

解决方案

沿着线

<前>\b(?:Jan(?:uary)?|Feb(?:ruary)?|...|Dec(?:ember)?) (?:19[7-9]\d|2\d{3})(?=\D|$)

那个

<前>\b # 一个词边界(?: # 非捕获组一月)?# 一月)|二月(?:ruary)?#|...# 等等|十二月(?:灰烬)?# 十二月(灰烬)) # 结束组# 空间(?: # 非捕获组19[7-9]\d|2\d{3} # 1970-2999) # 结束组(?=\D|$) # 后跟:除数字或字符串结尾外的任何内容

Is it possible to use a regex to match "February 2009", for example?

解决方案

Along the lines of

\b(?:Jan(?:uary)?|Feb(?:ruary)?|...|Dec(?:ember)?) (?:19[7-9]\d|2\d{3})(?=\D|$)

that's

\b                  # a word boundary
(?:                 # non-capturing group
  Jan(?:uary)?      # Jan(uary)
  |Feb(?:ruary)?    #
  |...              # and so on
  |Dec(?:ember)?    # Dec(ember)
)                   # end group
                    # a space
(?:                 # non-capturing group
  19[7-9]\d|2\d{3}  # 1970-2999
)                   # end group
(?=\D|$)            # followed by: anything but a digit or the end of string

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