PHP convert byte string into integer

Question

I am trying to convert a 2 byte string into a Short/int data type with unpack but it does not seem to work:

$str = "\x01\xBB";
unpack("S",$str);

it gives 47873 where as it must return 443

Why did you use `S` when your string seemingly requires big-endian unpacking? — mario, Sep 06 '14 at 21:29

score 6 · Accepted Answer · answered Sep 06 '14 at 21:42

6

You need to use n as the format string instead.

$str = "\x01\xBB";
unpack("n",$str);

answered Sep 06 '14 at 21:42

ElefantPhace

1 Answers1