>
> > Enjoyed Andrei's talk at the NYPHP Conference last week
> about unicode in
> > PHP 6. He mentioned that when unicode.semantics is on,
> strlen() will
> > return the number of characters rather than the number of
> bytes, like
> > mb_string() does or strlen() if mbstring.func_overload is on.
> >
> > The hitch here is there are situations where one needs to
> know how many
> > bytes are in a string. Is there a function I've overlooked
> that does
> > this or will do this, please?
> >
> My first question is: Why do you need to know the number of
> bytes occupied
> by a textual string? Is it because you want to work with
> binary strings?
> Because that's still very possible:
>
> Even with unicode.semantics=on, the binary string type may be
> explicitly
> used in a few ways:
>
> $a = b"This string contains an 0xF0 byte: \xF0";
> $alen = strlen($a);
>
> This being the simplest, the lowercase b (or u) characters
> denote a string
> as being a binary (or unicode) string explicitly. Leaving
> these specifiers
> off yield whatever type is appropriate to unicode.semantics.
>
> In other cases, such as reading from a binary mode file:
>
> $fp = fopen('foo.bin', 'rb');
> $str = fread($fp, 100);
Hi,
What happens with
$fp = fopen('foo.bin', 'wb');
$written = fwrite($fp, $str);
if (strlen($str) != $written)
{
echo 'Not written', "\n";
}
Jared
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