POSIX Regex
PHP Manual

POSIX 正则表达式函数

参见

Warning

This feature was DEPRECATED in PHP 5.3.0, and REMOVED in PHP 7.0.0.

Alternatives to this feature include:

  • PCRE (支持完整的正则表达式)
  • fnmatch() (支持 shell 风格通配符的匹配)

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POSIX Regex
PHP Manual