CODE EXAMPLE FOR PHP

time left laravel seconds

//seconds and human time readable
$endTime = Carbon::parse("2021-09-23 19:15:16");
$startTime = Carbon::parse("2021-09-23 19:15:14");
$timeleft = $startTime->diffForHumans($endTime);
return $timeleft;
//output => time_left: "2 second before"