php怎么将秒数转时间

$t=1637544;
$d=Sec2Time($t);

function Sec2Time($time){
    if(is_numeric($time)){
    $value = array(
      "years" => 0, "days" => 0, "hours" => 0,
      "minutes" => 0, "seconds" => 0,
    );
    if($time >= 31556926){
      $value["years"] = floor($time/31556926);
      $time = ($time%31556926);
    }
    if($time >= 86400){
      $value["days"] = floor($time/86400);
      $time = ($time%86400);
    }
    if($time >= 3600){
      $value["hours"] = floor($time/3600);
      $time = ($time%3600);
    }
    if($time >= 60){
      $value["minutes"] = floor($time/60);
      $time = ($time%60);
    }
    $value["seconds"] = floor($time);
    //return (array) $value;
    $t=$value["years"] ."年". $value["days"] ."天"." ". $value["hours"] ."小时". $value["minutes"] ."分".$value["seconds"]."秒";
    Return $t;
    
     }else{
    return (bool) FALSE;
    }
 }