求解释这个正则表达式的意思?
(/^(\d{2})\d{4}(((\d{2})(\d{2})(\d{2})(\d{3}))|((\d{4})(\d{2})(\d{2})(\d{3}[x\d])))$/i)
人气：271 ℃ 时间：2020-01-30 00:40:57
解答
一串数字以数字或x结束.
像下面这样的(空格不算):
11 1111 11 11 11 111x
11 1111 11 11 11 1112
11 1111 1111 11 11 111x
11 1111 1111 11 11 1112
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