-match 运算符测试一个正则表达式，将它与魔术变量 $matches 结合起来得到你的结果

The -match operator tests a regex, combine it with the magic variable $matches to get your result

PS C:\> $x = "----start----Hello World----end----"
PS C:\> $x -match "----start----(?<content>.*)----end----"
True
PS C:\> $matches['content']
Hello World

如果对 regex-y 有疑问，请查看此站点:http://www.regular-expressions.信息

Whenever in doubt about regex-y things, check out this site: http://www.regular-expressions.info