使用pdo从mysql获取总工作时间

Question

I want to get my total working hours.

Saved as started time and end time

$sql = "SELECT end_service, start_service FROM stage ORDER BY stage_id ASC";
$sql = $db->query($sql);

foreach($sql as $row) {
    $count = round((strtotime($row['end_service']) - strtotime($row['start_service'])) / 3600);
}

echo $count;

Answer 1

Providing your not recieiving any database errors, you need to set a count outside your foreach loop which is added to in each iteration.

$sql = $db->query($sql);
$count = 0;

foreach($sql as $row) {
    $count += round((strtotime($row['end_service']) - strtotime($row['start_service'])) / 3600);
}

echo $count;