B is the standard symbol for byte in all cases. SUFFIX_IEC = 'iB' isn't a thing

[hikari-no-yume]

The IEC prefixes are Ki, Mi, Gi, etc. so the i belongs with the prefix, not the suffix.

As pointed out on reddit: https://www.reddit.com/r/PHP/comments/3yq3yx/byteformatter_is_a_psr2_compliant_library_that/cygfps8

[Bilge]

I'm not entirely sure what this means. Can you explain further?

[hikari-no-yume]

-iB isn't a suffix, the 'i' is part of the prefix. You wouldn't have 1000iB, you'd have 1000B.

[Bilge]

The term suffix is used here to mean the unit is suffixed to the value. i.e. the value is the prefix and the units are the suffix.

[Bilge]

The issue is with the distinction between prefix and suffix as defined in SymbolDecorator.