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Posted by CptDondo on 12/06/06 00:26
I am working with a communications protocol that requires me to pack an
array of integers into a binary 'string'.
Let's say I have this:
int[0] = 0x1234
int[2] = 0x5678
int[3] = 0x9abc
int[4] = 0xdef0
I have to produce a string containing
0x 12 34 56 78 9a bc de f0
and send it off. The string contains the ints packed together in
big-endian order: HI LO HI LO HI LO.
In C, I can do this pretty easily, but I am not familiar enough with
PHP's data handling. I don't even know where to begin.
I know PHP can do it, since it handles images but how do you build
something like this from scratch? How can you build a string byte by byte?
--Yan
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