Padding hex strings with leading 0's

[Guggly]

Hi! I'm converting a number into hex using the dechex function which works just fine. However, I need the output hex string to include leading zeros as a constant 8-character string. What can I use to do this? Thanks! -- Mike

 

[sleipnir214]

I can think of a couple of ways off the top of my head.

One is using printf():

<?php
$foo = 125;

$bar = dechex($foo);

printf ('%08s', $bar);
?>

The other is using string concatenation and trimming:

<?php
$foo = 125;

$bar = '00000000' . dechex($foo);

print substr($bar, -8);
?>

Want the best answers? Ask the best questions:

http://www.catb.org/~esr/faqs/smart-questions.html

TANSTAAFL!!