Question

我的代码可以计算月内的工作日数。如果在一个月内有一个时期，一切都算好了。

但是如果在月份（这个案例是8月份）不止一个时期它就不起作用

<select class="form-control" name="student_id" id="student" style="width: 100%;"></select>

所以八月份将是12个工作日

这是我的mysqli查询：

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>

这里是php：

$getaways =  mysqli_query($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'];

此代码返回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);作为工作天数

我错过了什么或做错了什么？感谢。

Answer 1

好的我觉得我现在遇到了问题，你从查询中返回了多行，但你只是在计算中使用第一行。

您需要遍历查询返回的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;

要获得您想要的结果，请尝试将查询更改为

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

这将返回8月假期开始的所有行，无论假期何时结束。

计算每月的天数

1 个答案: