正则表达式解释：(?>[^<>]+)

发布于 2024-10-30 06:10:44 字数 80 浏览 1 评论 0 原文

请问这个 /(?>[^<>]+)/ 应该如何解释？（PHP 正则表达式引擎）

谢谢。

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驱逐舰岛风号 2024-11-06 06:10:44

(?>        # I had to look this up, but apparently this syntax prevents the regex
           # parser from backtracking into whatever is matched in this group if 
           # the rest of the  pattern fails
   [^<>]+  # match ANY character except '<' or '>', 1 or more times. 
         ) # close non-backtrackable group.

对于对一次性模式感兴趣的任何人，请查看 Once-only subpatterns 部分>http://www.regextester.com/pregsyntax.html

(?>        # I had to look this up, but apparently this syntax prevents the regex
           # parser from backtracking into whatever is matched in this group if 
           # the rest of the  pattern fails
   [^<>]+  # match ANY character except '<' or '>', 1 or more times. 
         ) # close non-backtrackable group.

For anyone interested in the once-only pattern, check out the section Once-only subpatterns in http://www.regextester.com/pregsyntax.html

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