计算每个员工特定月份的工作时间

Question

I'm using symfony3, I have an entity called Presence to register entry time and out time of each employee. The registration works good but I'd like to calculate the total of working hours of specific month.

In fact , I use this method to calculate the total of working hours by day:

 public function hoursByDay()
 {
    $interval1 = $this->entryTimeFirstHalf->diff($this->entryTimeFirstHalfr);
    $interval2 = $this->entryTimeSecondHalf->diff($this->outTimeSecondHalf);

    $e = new \DateTime('00:00');
    $f = clone $e;

    $e->add($interval1);
    $e->add($interval2);

    return $f->diff($e)->format("%H:%I");
}

But I didn't reach to calculate the total of working hours by month.

/**
* Presence
*
* @ORM\Table(name="presence")
* @ORM\Entity(repositoryClass="AppBundle\Repository\PresenceRepository")
*/
class Presence
{
/**
 * @var int
 *
 * @ORM\Column(name="id", type="integer")
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="AUTO")
 */
private $id;

/**
 * @var \DateTime
 *
 * @ORM\Column(name="date_presence", type="date")
 */
private $date;

/**
 * @var \DateTime
 *
 * @ORM\Column(name="entry_time_first_half", type="time")
 */
private $entryTimeFirstHalf;

/**
 * @var \DateTime
 *
 * @ORM\Column(name="out_time_first_half", type="time")
 */
private $outTimeFirstHalf;

/**
 * @var \DateTime
 *
 * @ORM\Column(name="entry_time_second_half", type="time")
 */
private $entryTimeSecondHalf;

/**
 * @var \DateTime
 *
 * @ORM\Column(name="out_time_second_half", type="time")
 */
private $outTimeSecondHalf;

/**
 * @ORM\ManyToOne(targetEntity="AppBundle\Entity\Employee")
 * @ORM\JoinColumn(nullable=false, onDelete="CASCADE")
 */
private $employee;

Answer 1

Try this SQL:

SELECT `employee_id`, SUM( TIMESTAMPDIFF( HOUR, `entry_time_first_half`, `out_time_second_half` )) 
FROM `presence`
WHERE MONTH(`date`) = 7 AND YEAR(`date`) = 2018
GROUP BY `employee`