其他非法字符都可以匹配，/和\，創建文件時提示“文件已存在，請重命名之后創建”，已經用了轉義，這是basename的影響么？

basename($path, $suffix)?

Returns trailing name component of path

參數：

path string

A path.

On Windows, both slash (/) and backslash (\) are used as directory separator character. In other environments, it is the forward slash (/).

suffix string[optional]

If the name component ends in suffix this will also be cut off.

返回：

string the base name of the given path. ?

怎么解決/和\匹配問題？