preg_match,该如何处理
preg_match
preg_match('~^/(\.[^/]+)[/]{0,1}~'， 不知道~这个符号是什么作用？
------解决方案--------------------
php 正则表达式需要用分界符括起来，分隔符可以是除下列字符以外的其他字符：字母或数字，反斜杠，空白字符
常用的分隔符有：斜杠（/，forward slash），井号（#，hash sign）和波浪号（~，tilde）。..
建议系统的去学习下正则吧.
------解决方案--------------------
对于正则表达式，至少需要看一下手册的
web开发涉及的各种语言的手册中都有关于正则表达式的描述
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