我想要用正则匹配出以下的内容，这些内容是在samba.conf这个文件里 求一个正则

　　正则的代码如下 $str = "[printers]browseable = noprintable = yeswritable = nopath = /var/spool/sambaguest ok = nocomment = All Printersavailable = no[root]comment = scz's filedirpath = /var/www/html;public = nowritable = yesbrow