如何在PHP中添加時間值？

Question

我正在嘗試做start_time + appt_duration = end_time; START_TIME爲e：G：8時00分00秒的持續時間 E：G：01:30:00

但結束時間與未來：0時54分08秒

所有屬性被配置 '時間'在數據庫中。

代碼：

 $time= $model->start_time; 

    $duration=$model->appt_duration; 

    $duration_array = explode(':', $duration); 

    $length = ((int)$duration_array[0] * 3600) + ((int)$duration_array[1] * 60) + (int)$duration_array[2]; 
    $target = $length + $time; 

    $model->end_time= $target; 

Answer 1

試試這個：

$length = ((int)$duration_array[0] * 3600) + ((int)$duration_array[1] * 60) 
    + (int)$duration_array[2]; 
    $model->end_time = date("H:i:s", 
      strtotime("+".$length." seconds",strtotime($model->start_time)) 
      ); 

Answer 2

我prefere使用\DateTime對象，從http://www.php.net/manual/en/datetime.add.php：

$date = new DateTime('2000-01-01'); 
$date->add(new DateInterval('P10D')); 
echo $date->format('Y-m-d'), PHP_EOL; 

又見\DateTime::createFromFormat() - http://www.php.net/manual/de/datetime.createfromformat.php