[一、昨日回顾](%E4%B8%80%E3%80%81%E6%98%A8%E6%97%A5%E5%9B%9E%E9%A1%BE6.md) [二、今日目标](%E4%BA%8C%E3%80%81%E4%BB%8A%E6%97%A5%E7%9B%AE%E6%A0%876.md) [三、正则表达式概述](%E4%B8%89%E3%80%81%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F%E6%A6%82%E8%BF%B0.md) [四、入门案例](%E5%9B%9B%E3%80%81%E5%85%A5%E9%97%A8%E6%A1%88%E4%BE%8B.md) [五、正则语法](%E4%BA%94%E3%80%81%E6%AD%A3%E5%88%99%E8%AF%AD%E6%B3%95.md) [六、分组/捕获和反向引用](%E5%85%AD%E3%80%81%E5%88%86%E7%BB%84-%E6%8D%95%E8%8E%B7%E5%92%8C%E5%8F%8D%E5%90%91%E5%BC%95%E7%94%A8.md) [七、匹配中文（utf-8编码）](%E4%B8%83%E3%80%81%E5%8C%B9%E9%85%8D%E4%B8%AD%E6%96%87%EF%BC%88utf-8%E7%BC%96%E7%A0%81%EF%BC%89.md) [八、环视（断言/零宽断言/正向预测/负向预测）](%E5%85%AB%E3%80%81%E7%8E%AF%E8%A7%86%EF%BC%88%E6%96%AD%E8%A8%80-%E9%9B%B6%E5%AE%BD%E6%96%AD%E8%A8%80-%E6%AD%A3%E5%90%91%E9%A2%84%E6%B5%8B-%E8%B4%9F%E5%90%91%E9%A2%84%E6%B5%8B%EF%BC%89.md) [九、正则对象的属性和方法](%E4%B9%9D%E3%80%81%E6%AD%A3%E5%88%99%E5%AF%B9%E8%B1%A1%E7%9A%84%E5%B1%9E%E6%80%A7%E5%92%8C%E6%96%B9%E6%B3%95.md) [十、支持正则表达式的 String 对象的方法](%E5%8D%81%E3%80%81%E6%94%AF%E6%8C%81%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F%E7%9A%84String%E5%AF%B9%E8%B1%A1%E7%9A%84%E6%96%B9%E6%B3%95.md) [十一、案例](%E5%8D%81%E4%B8%80%E3%80%81%E6%A1%88%E4%BE%8B.md) [十二、PHP中的正则表达式](%E5%8D%81%E4%BA%8C%E3%80%81PHP%E4%B8%AD%E7%9A%84%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F.md)