从mysql解析每个日期的数据

Question

我目前正在尝试建立一个考勤系统来跟踪我的游戏社区中的用户。截至目前，我想根据数据库中给出的日期显示真实或错误，以及本月当前的日期（日期1-11）。随着月内的进展，应用程序也会这样做。

先谢谢你，现在试图解决这个问题。

这是我目前得到的

我当前的代码

include('../../config/protection.php');
include('../../config/db.php');
date_default_timezone_set("America/Los_Angeles");
//Date formating
$dateFormat = "Y-m-d H:i:s";

$begin = new DateTime( 'first day of this month' );
$end = new DateTime( 'last day of this month' );
$end = $end->modify( '+1 day' );
$interval = new DateInterval('P1D');
$daterange = new DatePeriod($begin, $interval ,$end);
$daterange2 = new DatePeriod($begin, $interval ,$end);


$date = new DateTime();
$date1 = new DateTime();
$dateString = $date1->format($dateFormat);
$timestamp2 = strtotime($dateString);
$month2 = date('j', $timestamp2);
//generating days of the month
$month = date('m', $timestamp2);
$year = date('Y', $timestamp2);

//select username ane id
$sql = "SELECT * from rosters,ranks
inner join user_ranks on user_ranks.rank_id=ranks.id
where rosters.ruser_id = user_ranks.user_id
GROUP BY rosters.rname 
ORDER BY ranks.id";

$results = mysqli_query($con, $sql);
if(!$results and $mysqliDebug) {
    echo "<p>There was an error in query: $results</p>";
    echo $con->error;
}
?>
<table width="100%" class="table table-striped table-bordered table-hover" id="dataTables-example">
    <thead>
        <tr>
            <th class="center">Rank/Name</th>
            <th class="center">Promotion Date</th>
            <?php
            foreach($daterange as $date)
            {
            echo '<th class="center">'.$date->format("d") . "</th>";
            }
            ?>
        </tr>
    </thead>
<tbody>

<?php
// $rows = array();
while( $row = mysqli_fetch_assoc($results) )
{
    echo "<tr>";
    echo "<td>" . $row['rname'] . "</td>";
    echo "<td>N/A</td>";

    $userid1 = $row['ruser_id'];
    // $rows[] = $row;
    $attendsql = "SELECT * from attendances where user_id=$userid1";
    $attendresults = mysqli_query($con, $attendsql);
    $arows = array();

    while( $arow = mysqli_fetch_array($attendresults) )
    {
        $arows[] = $arow;
    }

    foreach($daterange as $date1)
    {
        foreach ($arows as $arow ) 
        {
            $date1String = $date1->format('Y-m-d');
            $createdOnDate = $arow['created_on'];
            $createdDate = new DateTime( $createdOnDate );
            $attendanceDateString = $createdDate->format('Y-m-d');

            if ( $attendanceDateString == $date1String )
            {
                echo '<td>True</td>';
            }
            else
            {
                echo '<td>False</td>';
            }
        }
    }

    echo "</tr>";
}





?>
    </tbody>
</table>

Answer 1

尝试将循环更改为：

foreach( $daterange as $date1 )
{
    $attended = FALSE;

    foreach ( $arows as $arow ) 
    {
        $date1String          = $date1->format('Y-m-d');
        $createdOnDate        = $arow['created_on'];
        $createdDate          = new DateTime( $createdOnDate );
        $attendanceDateString = $createdDate->format('Y-m-d');

        if ( $attendanceDateString == $date1String )
        {
            $attended = TRUE;
        }
    }

    if ( $attended )
    {
        echo '<td>True</td>';
    }
    else
    {
        echo '<td>False</td>';
    }
}

基本上，您似乎为每个日期打印了数据库中每一行的响应，而不是每个日期只打印一个值。

Answer 2

你应该写这个。这将解决您的问题。

    include('../../config/protection.php');
    include('../../config/db.php');
    date_default_timezone_set("America/Los_Angeles");
    //Date formating
    $dateFormat = "Y-m-d H:i:s";

    $begin = new DateTime( 'first day of this month' );
    $end = new DateTime( 'last day of this month' );
    $end = $end->modify( '+1 day' );
    $interval = new DateInterval('P1D');
    $daterange = new DatePeriod($begin, $interval ,$end);
    $daterange2 = new DatePeriod($begin, $interval ,$end);


    $date = new DateTime();
    $date1 = new DateTime();
    $dateString = $date1->format($dateFormat);
    $timestamp2 = strtotime($dateString);
    $month2 = date('j', $timestamp2);
    //generating days of the month
    $month = date('m', $timestamp2);
    $year = date('Y', $timestamp2);

    //select username ane id
    $sql = "SELECT * from rosters,ranks
    inner join user_ranks on user_ranks.rank_id=ranks.id
    where rosters.ruser_id = user_ranks.user_id
    GROUP BY rosters.rname 
    ORDER BY ranks.id";

    $results = mysqli_query($con, $sql);
    if(!$results and $mysqliDebug) {
        echo "<p>There was an error in query: $results</p>";
        echo $con->error;
    }
    ?>
    <table width="100%" class="table table-striped table-bordered table-hover" id="dataTables-example">
        <thead>
            <tr>
                <th class="center">Rank/Name</th>
                <th class="center">Promotion Date</th>
                <?php
                foreach($daterange as $date)
                {
                echo '<th class="center">'.$date->format("d") . "</th>";
                }
                ?>
            </tr>
        </thead>
    <tbody>

    <?php
    // $rows = array();
    while( $row = mysqli_fetch_assoc($results) )
    {
        echo "<tr>";
        echo "<td>" . $row['rname'] . "</td>";
        echo "<td>N/A</td>";

        $userid1 = $row['ruser_id'];
        // $rows[] = $row;
        $attendsql = "SELECT * from attendances where user_id=$userid1";
        $attendresults = mysqli_query($con, $attendsql);
        $arows = array();

        while( $arow = mysqli_fetch_array($attendresults) )
        {
            $arows[] = $arow;
        }

        foreach($daterange as $date1)
{
        $attended = FALSE;
    foreach ($arows as $arow ) 
    {
        $date1String = $date1->format('Y-m-d');
        $createdOnDate = $arow['created_on'];
        $createdDate = new DateTime( $createdOnDate );
        $attendanceDateString = $createdDate->format('Y-m-d');

        if ( $attendanceDateString == $date1String )
        {
            $attended = TRUE;
                    }
    }
    if ($attended)
    {
                    echo '<td>True</td>';
            }
            else
            {
                    echo '<td>False</td>';
            }

}

        echo "</tr>";
    }


    ?>
        </tbody>
    </table>

这将解决您的问题