Question

如果我提交表单，如果选择框在while循环中，我怎么能将值传递给process.php页面。有没有解决方案或选择？

<form role="form" method="post" action="process.php" >
<?php 
    $endDate = '2014-01-28';
    $startDate = '2014-01-27';

    $daydiff = floor( ( strtotime( $endDate ) - strtotime( $startDate ) ) / 86400 );

    $x=0; 
    while($x<=$daydiff)
    {
        ?>
            <div class="form-group">
                <label for="day_name">Day Name</label>
                <select class="form-control" name="day_name">
                    <option value="monday">Monday</option>
                    <option value="tuesday">Tuesday</option>
                    <option value="wednesday">Wednesday</option>
                    <option value="thursday">Thursday</option>
                </select>
            </div>
            <div class="form-group">
                <label for="time">time</label>
                <select class="form-control" name="time">
                    <option value="10am">10am</option>
                    <option value="11am">11am</option>
                    <option value="12pm">12pm</option>
                    <option value="1pm">1pm</option>
                </select>
            </div>
        <?php
        $x++;
    } 
?>
<button type="submit" name="submit">Submit</button>
</form>

Answer 1

首先通过在选择框名称的末尾添加数字来更改HTML代码。然后添加新的隐藏变量以保持选择框的计数。

$endDate = $_POST['enddate'];
$startDate = $_POST['startdate'];

$daydiff = floor(( strtotime($endDate) - strtotime($startDate) ) / 86400);

$x = 0;
while ($x <= $daydiff) {
    ?>
    <select class="form-control" name="day_<?php echo $x; ?>">
        <option value="monday">Monday</option>
        <option value="tuesday">Tuesday</option>
        <option value="wednesday">Wednesday</option>
        <option value="thursday">Thursday</option>
    </select>
    <select class="form-control" name="time_<?php echo $x; ?>">
        <option value="10am">10am</option>
        <option value="11am">11am</option>
        <option value="12pm">12pm</option>
        <option value="1pm">1pm</option>
    </select>
    <?php
    $x++;
}
?>
<input type="hidden" name="count" value="<?php echo $x ?>"/>

在表单提交中使用此代码来获取所需的数据。

for ($i = 0; $i < $_POST['count']; $i++) {
    $day_var = 'day_' . $i;
    $days_list[] = $_POST[$day_var];

    $time_var = 'time_' . $i;
    $time_list[] = $_POST[$time_var];
}

print_r($days_list);
print_r($time_list);

Answer 2

您没有获得该值，因为在While循环中创建的所有<select>框具有相同的名称。请更改这些选择框的名称。尝试下面的代码来呈现<select>框：

<?php 
   $endDate = $_POST['enddate'];
   $startDate = $_POST['startdate'];

   $daydiff = floor( ( strtotime( $endDate ) - strtotime( $startDate ) ) / 86400 );

   $x=0; 
   while($x<=$daydiff)
   {?>
      <select class="form-control" name="day_name_<?php echo $x;?>">
        <option value="monday">Monday</option>
        <option value="tuesday">Tuesday</option>
        <option value="wednesday">Wednesday</option>
        <option value="thursday">Thursday</option>
      </select>
      <select class="form-control" name="time_<?php echo $x;?>">
        <option value="10am">10am</option>
        <option value="11am">11am</option>
        <option value="12pm">12pm</option>
        <option value="1pm">1pm</option>
      </select>
      <?php                             
      $x++;
   }?>

现在，通过保留$daydiff变量值

，在while循环中检索这些值

Answer 3

$selectOption = $_POST['day_name'];

<select class="form-control" name="day_name">
        <option value="monday">Monday</option>
        <option value="tuesday">Tuesday</option>
        <option value="wednesday">Wednesday</option>
        <option value="thursday">Thursday</option>
</select>

来自循环的数据

3 个答案: