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Discussion on: Always use `/` as directory separator in php

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c33s profile image
Julian Author

and to which symbol / is replaced? if it stays the same your argument that \ is replaced to ¥ also hardens my argument to only use / as separator

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keinos profile image
KEINOS

/ (as a directory separator) is ¥ on Japanese Win env.

And on non-UNICODE encoding env such as Shift-JIS, \ is displayed also as ¥.

Since we have to handle a lot of encodings (Shift-JIS, JIS, EUC, UTF-8, UTF-16) until all the systems become UTF-16 or at least UTF-8, we have to convert encoding each other.

The problem is, Windows10 JP uses half Shift-JIS and half UTF-16 inside, so you can type /, ¥, \ as is.

But once changing the encoding (UTF-8 -> S-JIS) it becomes a mess. Imagine \ as escaping and directory as / becomes all ¥.

Well, I agree "always using / as a directory separator" would be nice. Really.

But so far I think for directory separator purposes using DIRECTORY_SEPARATOR is safer.

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c33s profile image
Julian Author

that sounds odd... of course a thing to keep in mind.

But so far I think for directory separator purposes using DIRECTORY_SEPARATOR is safer.

not sure if you can generalize that. as i wrote in my post, people are using the DIRECTORY_SEPARATOR and it happened to me more than once, that the well-intentioned DIRECTORY_SEPARATOR simply broke stuff.
of course you arguments are really good ones, i simply try to balance what happens more often, a special encoding which is known to break things or a DIRECTORY_SEPARATOR which is used wrong because it can't be tested on linux systems.

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shipman profile image
jon™

But you shouldn't use DIRECTORY_SEPARATOR on urls, hence your "simply broke stuff" issue.

It's like using move_uploaded_file to move file A.txt to B.txt, it simply won't work.