PHP表单操作标记中的PHP
[英]PHP in HTML Form Action Tag
问题描述
First PHP page, so this is likely a problem surfacing out of something stupid I'm missing, but I'm not sure what. 
第一个PHP页面，所以这可能是一个问题，因为我错过了一些愚蠢的东西，但我不确定是什么。 I'm following the tutorial on W3Schools to create a form with protection from XSS, but when I use the code <form method="post" action="<?php echo $_SERVER['PHP_SELF'); ?>"> , it is parsed such that the first > is associated with the form tag, so the quotes are mismatched, and the action doesn't complete correctly. 我正在按照W3Schools的教程创建一个受XSS保护的表单，但是当我使用代码<form method="post" action="<?php echo $_SERVER['PHP_SELF'); ?>"> ，它被解析为第一个>与form标记相关联，因此引号不匹配，并且操作无法正确完成。
This is what the page looks like: 这就是页面的样子：
EDIT: Full Code Below 编辑：下面的完整代码
<body>
<?php
$fname = $lname = $email = $student = "";
if($_SERVER["REQUEST_METHOD"] == "POST")
{
$fname = $_POST["fname"];
$lname = $_POST["lname"];
$email = $_POST["email"];
switch($_POST["student"])
{
case "u":
$student = "Undergraduate";
break;
case "g":
$student = "Graduate";
break;
default:
$student = "Non-Student";
}
}
?>
<form method="post" action="<?php echo $_SERVER['PHP_SELF'); ?>">
<p>First Name: <input type="text" name="fname"> </p>
<p>Last Name: <input type="text" name="lname"> </p>
<p>Email: <input type="email" name="email"> </p>
<p>Student Status: <select name="student">
<option value="u">Undergraduate</option>
<option value="g">Graduate</option>
<option value="x">Non-Student</option>
</select> </p>
<input type="submit" value="Submit">
</form>
<?php
echo "<h3>Input:</h3>"
echo "Name: " . $fname . " " . $lname . "<br>";
echo "Email: <a href=mailto:" . $email . ">" . $email . "</a><br>";
echo "Student: " . $student;
?>
</body>
2 个解决方案
解决方案1
2 已采纳 2015-05-12 00:35:08
.html files do not get parsed like .php files do, therefore you will need to install a Webserver on your system. .html文件不像.php文件那样被解析，因此您需要在系统上安装Web服务器。
Sidenote: You can instruct Apache to treat .html files as PHP, if and when the time comes that you want to do this, it is possible. 旁注：您可以指示Apache将.html文件视为PHP，如果时间到了，您可以这样做。
- Here is an article on Stack: Using .htaccess to make all .html pages to run as .php files? 这是一篇关于Stack的文章： 使用.htaccess使所有.html页面以.php文件的形式运行？
.php files cannot be run directly from a web browser, unless they are parsed and running off a server or a hosted site. .php文件不能直接从Web浏览器运行，除非它们被解析并在服务器或托管站点上运行。
They require to be accessed as http://localhost/file.php from a local machine. 它们需要从本地计算机以http://localhost/file.php形式访问。
Depending on your platform, you can use Xampp which runs on Windows, Mac and Linux. 根据您的平台，您可以使用在Windows，Mac和Linux上运行的Xampp。
Wamp: WAMP：
- http://www.wampserver.com/en/ http://www.wampserver.com/en/
- http://www.easyphp.org/ http://www.easyphp.org/
Mamp (Mac): Mamp（Mac）：
Plus, you have a few syntax errors. 另外，您有一些语法错误。
action="<?php echo $_SERVER['PHP_SELF'); ?>">
^
that should be a square bracket, rather than a parentheses. 这应该是一个方括号，而不是括号。
action="<?php echo $_SERVER['PHP_SELF']; ?>">
and echo "<h3>Input:</h3>" is missing a closing semi-colon. 和echo "<h3>Input:</h3>"缺少一个结束分号。
Those would throw/cause a parse error. 那些会抛出/导致解析错误。
解决方案2
1 2015-05-11 02:26:13
The solution may be apparent, the closing bracket is mismatched. 解决方案可能很明显，结束括号不匹配。
Change: 更改：
<form method="post" action="<?php echo $_SERVER['PHP_SELF'); ?>">
To: 至：
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
Notice ['PHP_SELF') and ['PHP_SELF'] . 注意['PHP_SELF')和['PHP_SELF'] 。
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