如何编写PHP循环以表格式显示数据库查询中的数据？

Question

阵列输出

print_r($hours_effort_result); //prints below output

Array
(
    [0] => Array
        (
        )

    [1] => Array
        (
            [0] => Array
            (
                [RESOURCE_ID] => 1
                [EMPLOYEE_NAME] => User 1
                [SITE_STATUS] => Onsite
                [ACTUAL_HOURS] => 120
                [MONTH_YEAR] => JUL-2015
            )

            [1] => Array
            (
                [RESOURCE_ID] => 2
                [EMPLOYEE_NAME] => User 2
                [SITE_STATUS] => Onsite
                [ACTUAL_HOURS] => 140
                [MONTH_YEAR] => JUL-2015
            )

        )

    [2] => Array
        (
            [0] => Array
            (
            [RESOURCE_ID] => 3
            [EMPLOYEE_NAME] => User 1
            [SITE_STATUS] => Offshore
            [ACTUAL_HOURS] => 170
            [MONTH_YEAR] => AUG-2015
            )   

            [1] => Array
                (
                    [RESOURCE_ID] => 4
                    [EMPLOYEE_NAME] => User 2
                    [SITE_STATUS] => Offshore
                    [ACTUAL_HOURS] => 180
                    [MONTH_YEAR] => AUG-2015
                )

        )

    [3] => Array
        (
        )

)

foreach ($hours_effort_result as $hours_effort_data){

        echo '<pre>';print_r($hours_effort_data);//below output
}

Array
(
)

Array
(
    [0] => Array
        (
            [RESOURCE_ID] => 1
            [EMPLOYEE_NAME] => User 1
            [SITE_STATUS] => Onsite
            [ACTUAL_HOURS] => 120
            [MONTH_YEAR] => JUL-2015
        )

    [1] => Array
        (
            [RESOURCE_ID] => 2
            [EMPLOYEE_NAME] => User 2
            [SITE_STATUS] => Onsite
            [ACTUAL_HOURS] => 140
            [MONTH_YEAR] => JUL-2015
        )

)

Array
(
    [0] => Array
        (
            [RESOURCE_ID] => 3
            [EMPLOYEE_NAME] => User 1
            [SITE_STATUS] => Offshore
            [ACTUAL_HOURS] => 170
            [MONTH_YEAR] => AUG-2015
        )

    [1] => Array
        (
            [RESOURCE_ID] => 4
            [EMPLOYEE_NAME] => User 2
            [SITE_STATUS] => Offshore
            [ACTUAL_HOURS] => 180
            [MONTH_YEAR] => AUG-2015
        )
)

Array
(
)

显示月份和站点

print_R($project_months); //outputs below data

Array
(
    [0] => JUN-2015
    [1] => JUL-2015
    [2] => AUG-2015
    [3] => SEP-2015
)


echo '<tr>';

        foreach($project_months as $month_year){

            echo '<td>Site</strong></td>';
            echo '<td>'.$month_year.'</td>';
        }
echo '</tr>';

期望输出

Name of Engineer    Site  Jun-15  Site   Jul-15  Site     Aug-15  Site  Sep-15  
User 1                            Onsite  120    Offshore  170              
User 2                            Onsite  140    Offshore  180

可以看到，月份Jun和Sep不包含任何数据，因此数组是空的，而其他月份包含以表格格式打印的数据。要打印的唯一数据是Engineer Name, Site and Hours。

如何循环数组以实现上述输出？

Answer 1

这是假设您定义了这个变量：

$project_months = Array('JUN-2015', 'JUL-2015', 'AUG-2015', 'SEP-2015' );

首先，创建一个用户数组：

<?php 

$user_array = Array();

foreach ( $project_months as $month ) 
{
    foreach ($hours_effort_result as $key => $data)
    {
        if ( ! empty ($data) )
        {
            foreach ($data as $key => $val )
            {
                if ( $val['MONTH_YEAR'] == $month ) 
                {
                  $user_array[$val['EMPLOYEE_NAME']][$month]['SITE_STATUS'] = $val['SITE_STATUS'];
                  $user_array[$val['EMPLOYEE_NAME']][$month]['ACTUAL_HOURS'] = $val['ACTUAL_HOURS'];
                }
            }
        }
    }
}
?>

其次，在表中，循环遍历$user_array并将n/a添加到那些没有数据的月份中。

<table>
<tr>
    <th>Name</th>
    <th>Site</th>
    <th>Jun-15</th>
    <th>Site</th>
    <th>Jul-15</th>
    <th>Site</th>
    <th>Aug-15</th>
    <th>Site</th>
    <th>Sep-15</th>
</tr>
<?php foreach ($user_array as $user_name => $user_data): ?>
    <tr>
        <td><?php print ($user_name); ?></td>
        <?php foreach ($project_months as $month): ?>
            <?php if ( array_key_exists( $month, $user_data ) ): ?>
                <td><?php print ($user_data[$month]['SITE_STATUS']); ?></td>
                <td><?php print ($user_data[$month]['ACTUAL_HOURS']); ?></td>
            <?php else: ?>
                <td>n/a</td>
                <td>n/a</td>
            <?php endif; ?>
        <?php endforeach; ?>
    </tr>
<?php endforeach; ?>
</table>

Answer 2

尝试在此代码中插入断线。

$table = '';
    $table .= '<table>';
    $table .= '<thead>';
    $table .= '<th>Name of Engineer</th>';
    $table .= '<th>Site</th>';

    foreach ($arr as $key => $data)
    {
        foreach($data as $key2 => $val)
        {
            if ( ! empty($val) )
            {

                $table .= '<th>' . $val['MONTH_YEAR'] . '</th>';
            }
            else
            {
                $table .= '</th>';

            }
        }

    }
    $table .= '<br>';
    $table .= '</thead>';
    $table .= '<tbody>';

    foreach ($arr as $key => $data)
    {
        foreach($data as $key2 => $val)
        {
            if ( ! empty($val) )
            {
                $table .= '<td>'.$val['EMPLOYEE_NAME'].'</td>';
                $table .= '<td>'. $val['SITE_STATUS'] . '</td>';
                $table .= '<td>'. $val['ACTUAL_HOURS'] .'</td>';


            }
            else
            {
                $table .= '<td></td>';
                $table .= '<td></td>';

            }

        }


    }


    $table .= '</tbody>';
    $table .= '</table>';
    echo $table;