我想在每次提交时更新民意调查的选择。但它似乎不起作用。任何人都可以建议我保持隐藏字段的状态吗?以及如何清除当前页面中的所有内容以显示投票结果表?
<?php
if ($_POST['choice']==0)
$a_count = $_POST['a_count']+1;
if ($_POST['choice']==1)
$b_count = $_POST['b_count']+1;
if ($_POST['choice']==2)
$c_count = $_POST['c_count']+1;
if ($_POST['choice']==3)
$d_count = $_POST['d_count']+1;
?>
<html>
<head>
</head>
<body>
<form action="index.php" method="POST">
<table align="center">
<tr><td>Please select</td></tr>
<tr><td><input type="radio" name="choice" value="0">aaaa</td></tr>
<input type="hidden" name="a_count" value="<?php print $a_count ?>">
<tr><td><input type="radio" name="choice" value="1">bbbb</td></tr>
<input type="hidden" name="b_count" value="<?php print $b_count ?>">
<tr><td><input type="radio" name="choice" value="2">cccc</td></tr>
<input type="hidden" name="c_count" value="<?php print $c_count ?>">
<tr><td><input type="radio" name="choice" value="3">dddd</td></tr>
<input type="hidden" name="d_count" value="<?php print $d_count ?>">
<tr><td><input type="submit" value="submit"></td></tr>
</table>
<table align="center" border="1" cellspacing="0">
<tr align="center"><th>Member Name</th><th>Vote</th></tr>
<tr><td>aaaa</td><td><?php echo"$a_count";?></td></tr>
<tr><td>bbbb</td><td><?php echo"$b_count";?></td></tr>
<tr><td>cccc</td><td><?php echo"$c_count";?></td></tr>
<tr><td>dddd</td><td><?php echo"$d_count";?></td></tr>
</table>
</form>
</body>
</html>