PHP常量问题

Question

What is the

DIRECTORY_SEPARATOR

constant contain?

I can't find anything on google explaining this but its used in my OOP book.

Answer 1

It is the separator that link folder in a path like "/" in :

here/is/my/path

The separator depends on which OS you are running your website.

On windows, this is "\\" :

my\\path\\to\\folder

On Unix it's "/"

Answer 2

Either '/' or '\\' depending on your OS. Use it when specifying paths to make code more portable between Unix-y systems and Windows.

Answer 3

It's sort of on the tin.

When I run

var_dump(DIRECTORY_SEPARATOR);

I get (on my Linux/Ubuntu box)

string(1) "/" 

(A forward slash). This is the separator string that applies to file paths on the OS your server is running on. It will most probably be a \\ (backslash) on Windows systems.