padding zero for hexadecimal number in php

Question

Not sure what I am doing wrong here. When I pad zeros in front of a hexadecimal number it seems to change the number.

$number=1741;
strtoupper(dechex($number))
output is 6CD

sprintf('%03x', strtoupper(dechex($number))
output is 006

Answer 1

The accepted answer says to use sprintf twice. I don't see the value in doing this twice, %x accepts the same padding parameters as %d does and so this can be done in one function call.

$number = 141;

$hex = sprintf('%03X', $number); // 08D

See: https://3v4l.org/LQrWK

So to answer the question, just remove the strtoupper(dechex(...)) and the sprintf you have will work.

echo sprintf('%03x', $number); // 06d

echo sprintf('%03X', $number); // 06D