PHP: Convert Seconds to Format 00:00:00

For example, you can work with the PHP functions date(), sprintf()/printf() or a combination of date() and mktime():

$t = 3611;

// way 1
echo date("H:i:s", $t); 

// way 2
echo date("H:i:s", mktime(0, 0, 3611));

// way 3
echo sprintf("%02d:%02d:%02d", 
             floor($t/3600), floor($t/60)%60, $t%60);

Each of those lines will result in the output "01:00:11".

I have already explained the functionality of the functions used in this example in the answers of this question in detail.
2014-10-01 at 16:17