在一個月中計算日期

Question

我有一個月的工作日計算代碼。 如果在一個月有1個期間，一切都算好。

但是，如果在月（這種情況下，八月）是一個週期以上不工作

Dates example <br> 
2016-08-02 - 2016-08-04 (3 working days)<br> 
then <br> 
2016-08-08 - 2016-08-10 (3 working days)<br> 
and 2016-08-24 - 2016-09-02 (6 working days)<br> 

因此，這將是12個工作日內在八月

這裏是我的mysqli查詢：

$getaways = mysqli_query($conn, "SELECT * FROM employeesAbsence 
            WHERE workerID='".$row['worker']."' 
            AND fromDate LIKE '%2016-08%' 
            AND toDate LIKE '%2016-08%'); 
$aways_row = mysqli_fetch_array($getaways); 
$fDate = $aways_row['fromDate']; 
$tDate = $aways_row['toDate']; 

這裏是php：

function get_days($start, $end) 
{ 
    $begin = new DateTime($start); 
    $end = new DateTime($end); 
    //$end = $end->modify('+1 day'); //add one day so as to include the end date of our range 

    $total_days = 0; 
    //this will calculate total days from monday to friday in above date range 
    for($i = $begin; $i <= $end; $i->modify('+1 day')) 
    { 
     // Check that the date is between Monday and Friday and only in August 
     if(($i->format('N') >= 1 && $i->format('N') <= 5) && $i->format('m') == '08') 
     { 
      $total_days++; 
     } 
    } 
    return $total_days; 
} 

$total = 0; 
$total += get_days($fDate, $tDate); 

此代碼返回3爲工作日

我缺少什麼或者做錯了多少？ 謝謝。

Answer 1

好吧我想我現在得到了這個問題，你從查詢中得到了多於一行的數據，但你只在你的計算中使用第一行。

您需要遍歷查詢返回的3行。

function get_days($start, $end) 
{ 
    $begin = new DateTime($start); 
    $end = new DateTime($end); 

    $total_days = 0; 
    //this will calculate total days from monday to friday in above date range 
    for($i = $begin; $i <= $end; $i->modify('+1 day')) { 
     // Check that the date is between Monday and Friday and only in August 
     if(($i->format('N') >= 1 && $i->format('N') <= 5) && $i->format('m') == '08') { 
      $total_days++; 
     } 
    } 
    return $total_days; 
} 

$getaways = mysqli_query($conn, "SELECT * FROM employeesAbsence 
            WHERE workerID='".$row['worker']."' 
            AND MONTH(fromDate) = 8 
            AND MONTH(toDate) = 8"); 

if (! $getaways) { 
    echo mysqli_error($getaways); 
    exit; 
} 

// just check how many row you get back 
echo 'Query generated ' . mysqli_num_rows($getaways) . ' rows'; 

$total = 0; 
while ($row = mysqli_fetch_array($getaways)){ 
    $total += get_days($row['fromDate'], $row['toDate']); 
} 
echo $total; 

爲了得到你所suggestiong你想要的結果，請嘗試更改查詢

$getaways = mysqli_query($conn, "SELECT * FROM employeesAbsence 
            WHERE workerID='".$row['worker']."' 
            AND MONTH(fromDate) = 8"); 

那麼這將返回您在節日在八月開始，無論在假期結束的所有行。