Creates a nice duration given a number of seconds. For example, 1h 28m

duration.php

function nice_duration($seconds, $maxFragments = 0) {
        // Define time periods
        $periods = array (
                        'y' => 31556926,
                        'mo' => 2629743,
                        'wks' => 604800,
                        'd' => 86400,
                        'h' => 3600,
                        'm' => 60,
                        's' => 1
                        );
        $fragments = array();
        $seconds = (float) $seconds;
        foreach ($periods as $period => $pSec) {
                $pCount = (int) floor($seconds / (float) $pSec);
                if ( $pCount >= 1 ) {
                        $seconds -= $pCount * $pSec;
                        $fragments[]= $pCount . $period;
                }
                if ( $maxFragments > 0 && count($fragments) >= $maxFragments ) {
                        break;
                }
        }

        return count($fragments) > 0 ? implode(' ', $fragments) : "1s";
}