Question

我无法在动态表中进行简单的数学运算（这会变得更加复杂）。每次我提交结果时，它都应该加总并将总得分存储在$ players [$ player] ['score']中，但是一旦循环，它就会再次重置为零。
任何想法，我要去哪里错了？

    $new_players = $_SESSION["players"]; 
    //$_SESSION["players"] - brings in array an array like following 

    /* array (size=1)
      'John' => 
        array (size=3)
          'previous' => int 0
          'score' => int 0
          'hand' => int 0  */

    if (empty($players)) {//added as i thought $new_players = $_SESSION["players"]; might be blanking scores
        $players = $new_players;
    } 

if (isset($_POST[$submit])) {
    $new_array = $_POST['player'];
     foreach ($players as $player =>$i) {
        $players[$player]['hand'] = $new_array[$player]+0;//add to convert the $new_array[$player] to int
        $players[$player]['previous'] = $players[$player]['hand'];
        $players[$player]['score'] = $players[$player]['score'] + $players[$player]['hand'];
      }
  }
    ?>

<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" class="formAcc">
    <ul style= "text-align: center">

    <article>
    <li>
    <label>Current Standing</label>
    <?php
      echo '<table id="db_results">
      <colgroup>
        <col class="col15" />
        <col class="col15" />
        <col class="col15" />
        <col class="col15" />
      </colgroup>
    <tr>
    <th>Name</th>
    <th>Previous Score</th>
    <th>Current Score</th>
    <th>Hand</th>
    </tr>';

    foreach ($players as $player =>$i) {
        echo "<tr class=\"center\">
            <td>". $player . "</td>
            <td>". $i['previous'] . "</td>
            <td>". $i['score'] . "</td>"
            . '<td><input type="text" name="player['.$player.']" value="0"/></td>
            </tr>';
            }
    echo "</table>"; 
    ?>            

<input type="submit" name="<?php echo $submit?>" value="Input Scores" style="margin-top: 5px;"/>

            </li>
        </article>

        </ul>
    </form>

Answer 1

在单击“提交”时，您没有将更改保存到$_SESSION变量中，请尝试以下操作以提交提交处理程序：

if (isset($_POST[$submit])) {
    $new_array = $_POST['player'];
     foreach ($players as $player =>$i) {
        $players[$player]['hand'] = $new_array[$player]+0;//add to convert the $new_array[$player] to int
        $players[$player]['previous'] = $players[$player]['hand'];
        $players[$player]['score'] = $players[$player]['score'] + $players[$player]['hand'];
      }
      /* overwrite $_SESSION['players'] */
      $_SESSION['players'] = $players;
  }

foreach循环动态更新中的PHP数学

1 个答案: