Byte manipulation in PHP
Posted
by
Michael Angstadt
on Stack Overflow
See other posts from Stack Overflow
or by Michael Angstadt
Published on 2010-12-31T15:14:10Z
Indexed on
2011/01/04
20:54 UTC
Read the original article
Hit count: 105
In PHP, if you have a variable with binary data, how do you get specific bytes from the data? For example, if I have some data that is 30 bytes long, how do I get the first 8 bytes?
Right now, I'm treating it like a string, using the substr() function:
$data = //...
$first8Bytes = substr($data, 0, 8);
Is it safe to use substr with binary data?
Or are there other functions that I should be using?
Thanks.
© Stack Overflow or respective owner
