char to hex conversion problem????

I just tried to convert char into hex using the following code:

<?php
$char='H';
$format="------%02x----";
$hex=sprintf($format,$char);
echo($hex);
?>

Code (markup):

this type of conversion works in C and Perl .. but its not working in php.. I just read in PHP.net about this and according to it, the code must work .. I don't understand the problem... Please let me know if you have any solution..

Thanks
Nwk

 

$char='H';
$asciicode = ord($char);
$hex = dechex($asciicode);
if (strlen($hex)!=2) $hex = '0'.$hex; // optional, adds 0 in front if needed
// add optional - signs here in front and back of $hex 
echo $hex;
?>

PHP:

 

You did it man....Thanks very much...lol