>
> Recent versions of PHP5, has a binary string introducer.
>
> echo strlen(b"\xC4\x85");

I have already said to Stefan. It is not an option. I need backwards
compatibility. If older PHP versions fail with E_PARSE errors, I can't use
it.

I can't maintain two different library versions, because issue affect lots
of functions. Currently I can only stop script execution, if
unicode.semantics=on is detected. Main complain is the fact that scripts
can't control mbstring.func_overload and unicode.semantics. Only script
writters know, if their code depends on overloading or unicode syntax. End
users might be unable to change settings in PHP_INI_PERDIR.

Thanks to all for feedback.

-- 
Tomas

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