The objective is to convert a dec base number between 0 and 255 into a hex base number. The hex base number has to be written in a form XX. So eg 60_10=3c_16, but also 5_10=05_16.
For example:
Number 60 in dec base is 3c in hex base.
The following code works:
<?php
echo dechex(60);
?>
The output is: 3c
Bingo.
And now: Why is the output of the following code 03 instead of 3c? What can I do to make it 3c?
<?php
$br=60;
echo sprintf("%02x", dechex($br));
?>
See https://www.php.net/sprintf
It works when you pass the dec value to the function.
<?php
echo sprintf('%02x', 60);
3c
When you use
sprintf("%02x", dechex($br));
with 3c (the result of dechex()), the x in the format indicates
x The argument is treated as an integer and presented as a hexadecimal number (with lowercase letters).
so it expects an integer and will convert this to 3.
x does the conversion for you and no need for the dechex.....
echo sprintf("%02x", $br);
