[PHP 正则表达式(PCRE)](%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F/PHP%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8FPCRE.md) [语法](%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F/%E8%AF%AD%E6%B3%95.md) [修饰符](%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F/%E4%BF%AE%E9%A5%B0%E7%AC%A6.md) [元字符](%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F/%E5%85%83%E5%AD%97%E7%AC%A6.md) [运算符优先级](%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F/%E8%BF%90%E7%AE%97%E7%AC%A6%E4%BC%98%E5%85%88%E7%BA%A7.md) [匹配规则](%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F/%E5%8C%B9%E9%85%8D%E8%A7%84%E5%88%99.md) [案例](%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F/%E6%A1%88%E4%BE%8B.md)