Question

请我尝试在每行的候选表中获取名为totalvotes的列的百分比，并显示所有列totalvotes的总和。如果他们的立场是一样的。现在我所取得的成就是我能够获得SUM TOTAL和百分比，但现在的问题是 页面上我显示的第一行总是100％，我不是这样 请这是我的代码

    <?php


                        $counter=0;
$sql = mysqli_query($ret, "SELECT * From candidates WHERE position_id='$position_id'

ORDER BY candidates.position_id DESC,candidates.totalvotes DESC");
$row = mysqli_num_rows($sql);
$arr = array($row);
while ($row = mysqli_fetch_array($sql)){
//echo "". $row['campus_id'] ;
$total += $row['totalvotes'];
$perc =$row['totalvotes']*'100'/$total ; 

$counter++;
                     echo   "<tr class='odd pointer'>" ;




                     echo   "<td class='a-center '>";


                     echo   "<input type='checkbox' class='flat' name='table_records'>";


                     echo   " </td>" ;
                     echo   " <td >". $row['candidate_id']."</td>";
                     echo  " <td >". $row['fullname']."</td>";
                     echo  " <td >". $row['sex']."</td>";
                     echo   "</td>" ;
                     echo   " <td >". $row['totalvotes']."</td>";
                      echo   " <td >".$perc."%</td>";
                     echo   "";
                     echo   " </td>";
                     echo   "</tr>";

                         }
?>

Answer 1

是你的回答让我知道：

<?php
$counter=0;

$sql = mysqli_query($ret, "SELECT * From candidates WHERE position_id='$position_id' ORDER BY candidates.position_id DESC, candidates.totalvotes DESC");
$row = mysqli_num_rows($sql);
$arr = array($row);

$totalvotes = 0;
while ($row = mysqli_fetch_array($sql)) {
    $totalvotes += $row['totalvotes'];
}

while ($row = mysqli_fetch_array($sql)) {
    //echo "". $row['campus_id'] ;

    $perc = ($row['totalvotes']*'100'/$total); 

    echo   "<tr class='odd pointer'>" ;

    echo   "<td class='a-center '><input type='checkbox' class='flat' name='table_records'></td>" ;

    echo   "<td>". $row['candidate_id']."</td>";
    echo  " <td>". $row['fullname']."</td>";
    echo  " <td>". $row['sex']."</td>";

    echo   " <td>". $row['totalvotes']."</td>";
    echo   " <td>".$perc."%</td>";

    echo   "</tr>";

    $counter++;
}
?>

计算php mysql中特定列的每一行的百分比

1 个答案: