Equivilent of unsigned char x[65535]; ?

[Bill Godfrey]

Hello. I plan to write a 6502 emulator using PHP.

One thing I'd need is to to store 64k as the RAM. I suppose I could use an
a PHP array, with integers 0..65535 as the index, but as the PHP is an
associative array, it doesn't seem like the best storage.

Another possibility could be to keep a 64k long string. Could PHP handle
such a long string, including all possible byte values includind 0 and 255
and everything inbetween?

Perhaps there's a way to access a raw buffer of memory which I can't find
in the documents.

Any ideas please?

Bill, why yes, I am quite mad!

[Chung Leong]

Re: Equivilent of unsigned char x[65535]; ?


"Bill Godfrey" <bill-godfrey@sunny-coventry.invali d> wrote in message
news:2004062219 2445.812$c6@new sreader.com...[color=blue]
> Hello. I plan to write a 6502 emulator using PHP.
>
> One thing I'd need is to to store 64k as the RAM. I suppose I could use an
> a PHP array, with integers 0..65535 as the index, but as the PHP is an
> associative array, it doesn't seem like the best storage.
>
> Another possibility could be to keep a 64k long string. Could PHP handle
> such a long string, including all possible byte values includind 0 and 255
> and everything inbetween?[/color]

Yes, with no problem at all. I regularly use multi-megabyte strings.

The preferred syntax of access a character within a string is $x{3445}. To
get the actual byte value you need to use ord().