Question

I have the following code:

<?php
$val = fread($fp,1);
echo 'bindec: '.bindec($val)."\n";
echo 'bin2hex: '.bin2hex($val)."\n";
echo 'bin2hex/hexdec: '.hexdec(bin2hex($val))."\n";
?>

The byte being read appears in my hex editor as 0F. My output looks like this:

bindec: 0
bin2hex: 0f
bin2hex/hexdec: 15

My question is, why is bindec returning 0? Surely it should return 15?

Answer 1

Use ord() function instead of bindec() in the first line. bindec() requires an input string containing only 1 or 0 like “110101”. it does not take “real” binary data as input.