html 表单不会提交 POST

Question

我正在玩剪刀石头布游戏来练习我的 html 和 php，一切都很好，直到我尝试在 POST 中提交用户选择的答案.我一直在检查，按下 button 播放键时没有提交任何内容。

这是我的 html 代码：

<html>
    <head>
        <title>Oscar Felipe Ramírez Pardo</title>
        <meta charset="UTF-8">
    </head>
    <body>
        <h1>Rock Paper Scissors</h1>
        <p>Welcome: <?=htmlentities($_GET['name'])?></p>
        <forms method="POST">
            <p>
                <select name="option">
                    <option value="Select" checked>Select</option>
                    <option value="Rock">Rock</option>
                    <option value="Paper">Paper</option>
                    <option value="Scissors">Scissors</option>
                    <option value="Check">Check</option>
                </select>
                <input type="submit" value="Play" name="dopost">
                <input type="button" value="Logout" name="logout"></p>
        </forms>
        <pre>
<?php
foreach($rslt as $k => $v){
    echo $v."\n";
}
?>
        </pre> 
    </body>
</html>

这是之前的模型对照：

<?php
    $rslt=array("Please select a strategy and press Play.");
    $names=array("Rock","Paper","Scissors");

    if(!isset($_GET['name'])) die("Name parameter missing");
    if(isset($_POST['logout'])){
        header("Location: login.php");
        return;
    }

    function play($h){
        $c=$names[rand(0,2)];
        if($h===$c) $r="Tie";
        else if($h==="Rock" && $c==="Scissors") $r="You win.";
        else if($h==="Scissors" && $c==="Paper") $r="You win.";
        else if($h==="Paper" && $c==="Rock") $r="You win.";
        else $r="You lose.";
        return "Your Play=$h Computer Play=$c Result=$r";
    }

    
    
    if(isset($_POST['option'])){
        if($_POST['option']==="Select") $rslt=array("You must select a strategy in order to play.");
        else if($_POST['option']==="Check"){

        }
        else{
            $rslt=array(play($_POST['option']));
        }
    }
?>

我按任一按钮都没有得到任何信息 as it shows here., but the source code shows the first php variables are being recognized。

Answer 1

我认为您将标签 <form> 拼错为 <forms>，您必须添加一个操作来指定要调用的 php 页面。

像这样：

<form method="POST" action="test.php">
            <p>
                <select name="option">
                    <option value="Select" checked>Select</option>
                    <option value="Rock">Rock</option>
                    <option value="Paper">Paper</option>
                    <option value="Scissors">Scissors</option>
                    <option value="Check">Check</option>
                </select>
                <input type="submit" value="Play" name="dopost">
                <input type="button" value="Logout" name="logout"></p>
        </form>

Answer 2

不仅forms错了，你玩的时候应该也会出现undefined error。在 play 函数中添加 global $names。并将结果添加到 p 或其他标签中而不是 textarea 更好读

$rs = 1;
$rslt = "Please select a strategy and press Play.";
$names = array("Rock", "Paper", "Scissors");

if (!isset($_GET['name'])) die("Name parameter missing");
if (isset($_POST['logout'])) {
  header("Location: login.php");
  return;
}

function play($h)
{
  global $names;
  $c = $names[rand(0, 2)];
  if ($h === $c) $r = "Tie";
  else if ($h === "Rock" && $c === "Scissors") $r = "You win.";
  else if ($h === "Scissors" && $c === "Paper") $r = "You win.";
  else if ($h === "Paper" && $c === "Rock") $r = "You win.";
  else $r = "You lose.";
  return "Your Play=$h Computer Play=$c Result=$r";
}


if (isset($_POST['option'])) {
  if ($_POST['option'] === "Select") $rslt = "You must select a strategy in order to play.";
  else if ($_POST['option'] === "Check") {

  } else {
    $rslt = play($_POST['option']);
  }
}

?>

<html>
<head>
  <title>Oscar Felipe Ramírez Pardo</title>
  <meta charset="UTF-8">
</head>
<body>
<h1>Rock Paper Scissors</h1>
<p>Welcome: <?= htmlentities($_GET['name']) ?></p>
<form method="POST">

    <select name="option">
      <option value="Select" >Select</option>
      <option value="Rock">Rock</option>
      <option value="Paper">Paper</option>
      <option value="Scissors">Scissors</option>
      <option value="Check">Check</option>
    </select>
    <input type="submit" value="Play" name="dopost">
    <input type="button" value="Logout" name="logout">
  <p style="font-family:monospace">
                <p>
<?= $rslt ?>
                </p>
  </p>
</form>
</body>
</html>

Answer 3

我实际上也发现注销按钮不起作用，因为它的类型是 button 而不是 submit 因此 post 没有提交并且 isset($_POST['logout']) 没用过。

html 表单不会提交 POST

html form wont submit POST

html

php

forms

post

http-post