我有这个表单，有10个下拉选项可供选择，最后在底部有一个复选框免责声明。
例如，如果用户选择了所有10个答案，忘记勾选底部的免责声明框并点击提交，表单将返回一条错误消息，表示他们不同意免责声明，但他们之前选择的所有答案都消失了，他们必须重新选择。我试图找到一个最佳实践的方式来处理这个没有重复这么多的代码…
我有的，它工作，但它是疯狂的冗余，特别是如果我有100个问题。
<select name="question1" id="question1">
<?php if ($question[0] == '0') {
$first = 'selected="selected"';
$second = '';
$third = '';
$fourth = '';
} elseif ($question[0] == '1') {
$first = '';
$second = 'selected="selected"';
$third = '';
$fourth = '';
} elseif ($question[0] == '2') {
$first = '';
$second = '';
$third = 'selected="selected"';
$forth = '';
} elseif ($question[0] == '3') {
$first = '';
$second = '';
$third = '';
$forth = 'selected="selected"';
}
?>
<option value="0" <?php echo $first; ?>>Answer 1</option>
<option value="1" <?php echo $second; ?>>Answer 2</option>
<option value="2" <?php echo $third; ?>>Answer 3</option>
<option value="3" <?php echo $fourth; ?>>Answer 4</option>
</select>
这只是一个问题，所以你可以想象我必须重复所有的问题。一定有更好的办法吧?
谢谢…
<option value="0" <?= ($question[0] == 0 ? "selected='selected'" : ""); ?>>Answer 1</option>
<option value="1" <?= ($question[0] == 1 ? "selected='selected'" : ""); ?>>Answer 1</option>
<option value="2" <?= ($question[0] == 2 ? "selected='selected'" : ""); ?>>Answer 1</option>
<option value="3" <?= ($question[0] == 3 ? "selected='selected'" : ""); ?>>Answer 1</option>
通常是吗?
据我所知，没有优雅的解决方案。我倾向于使用条件语句，例如;
<option value="0" <?=($question[0] == 0 ? ' selected' : '')?>>Answer 1</option>
我是这样做的:
$array_existing_values = array(3,5);
$array_options = array(1,2,3,4,5);
foreach(array_options as $value)
{
$sel = null;
if (in_array($array_existing_values,$array_options)
{
$sel = ' selected ';
}
$html_options .= "<option value='$value' $sel>$value</option>";
}
为季节添加验证
试试这个。让$questions为用户保留所有问题，如下所示:
$questions = array(
// The first question
array(
'question' => 'The 1st question?'
'answers' => array(
'answer 1',
'answer 2',
'answer 3',
'answer 4',
)
),
// The second question
array(
...
),
// etc
);
$answer包含用户的所有答案，如下所示:
$answer = array(1, 2, 3, 2, ... );
然后你可以像这样重新绘制你所有的问题:
foreach ($questions as $index => $question)
{
echo "<p>" . $question['question'] ."</p>'n";
echo "<select name='question" . $index . "' id='question" . $index . "'>'n";
foreach ($question['answers'] as $value => $answer)
{
echo "<option value='" . $value . "' " . ($value == $answer[$index] ? "selected='true'" : "") . ">" . $answer . "</option>'n";
}
echo "</select>";
}