我在CSS +部分有一个表单，它将数据从文本字段发送到服务器所在的文件data.txt
每当我点击“提交”按钮时，什么都没有。我认为这是一个调用PHP脚本的明显问题
if(isset($_POST['textdata']))
{
$data=$_POST['textdata'];
$fp = fopen('data.txt', 'a');
fwrite($fp, $data);
fclose($fp);
}
?>
<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title>Pure CSS Steps</title>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<header>
<h1>Pure <strong>CSS</strong> Steps</h1>
<p>... a sassy "Step By Step" process.</p>
</header>
<section>
<article>
<form method="post" class="pure-steps" >
<input type="radio" name="steps" class="pure-steps_radio" id="step-0" checked="">
<input type="radio" name="steps" class="pure-steps_radio" id="step-1">
<input type="radio" name="steps" class="pure-steps_radio" id="step-2">
<div class="pure-steps_group">
<ol>
<li class="pure-steps_group-step">
<header>
<h2 class="pure-steps_group-step_legend">Welcome</h2>
<p class="pure-steps_group-step_item">You are about to form the form.</p>
<p class="pure-steps_group-step_item"></p>
</header>
</li>
<li class="pure-steps_group-step">
<fieldset>
<legend class="pure-steps_group-step_legend">Grab a tour</legend>
<p class="pure-steps_group-step_item flexy-item flexy-column reverse">
<input name="textdata" type="text" placeholder="Type your email here" value="" id="input_email" >
<label for="input_email">Email</label>
</p>
<p class="pure-steps_group-step_item flexy-item flexy-column reverse">
<input type="text" placeholder="Type your nick here" value="" id="input_nick">
<label for="input_nick">Name</label>
</p>
<p class="pure-steps_group-step_item flexy-item flexy-column reverse">
<input type="text" placeholder="Type your nick here" value="" id="input_nick">
<label for="input_nick">Phone</label>
</p>
</fieldset>
</li>
<li class="pure-steps_group-step flexy-item">
<div class="pure-steps_preload">
<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 32 32" style="enable-background:new 0 0 32 32;" xml:space="preserve">
<path d="M31.8,3.6c-0.2-0.5-0.4-0.9-0.9-1.2C30.4,2,29.7,1.8,29,1.9c-0.6,0.1-1.2,0.4-1.6,1l-8.5,11.2l0,0l-7.2,9.5l-7.1-9.4 c-0.5-0.7-1.3-1-2.1-1c-0.5,0-1,0.2-1.4,0.5c-0.5,0.4-0.9,1-1,1.7s0.1,1.2,0.5,1.8l9.1,12.1l0,0c0.1,0.2,0.3,0.3,0.4,0.4 c0.4,0.3,0.9,0.5,1.4,0.5c0.8,0,1.6-0.3,2.1-1L22.1,18l0,0l9.1-12.1C32,5.2,32.1,4.4,31.8,3.6z"></path>
</svg>
</div>
</li>
</ol>
<ol class="pure-steps_group-triggers">
<li class="pure-steps_group-triggers_item">
<label for="step-0">Restart</label>
</li>
<li class="pure-steps_group-triggers_item">
<label for="step-1">Grab a tour</label>
</li>
<input type="submit" name="submit">
<li class="pure-steps_group-triggers_item">
<label type="submit" name="submit" for="step-2">Jump in</label>
</li>
</ol>
</div>
<br>
<label for="step-0">Restart</label>
</form>
</article>
</section>
</body>
</html>
该文件在该位置。这里似乎有什么问题？我认为这是调用PHP的一个问题 - 没有地方可以调用它。问题在哪里找到？
PHP不是客户端，每次请求都执行一次。
您可以使表单指向自己，这将使页面重新加载，但这次使用$_POST数据。
<form method="post" class="pure-steps" action="thisPage.php" >