HTML 显示为文本

Question

我有一个包含 html 代码的 .php 文件。我遇到的问题是它显示为文本，而不是 html 元素。我发现了关于同一问题的其他几个问题：

Why is this HTML showing up as plain text in browser?

Browser shows plain text instead of HTML in mac

Page shows code not rendering

但是，我相信人们在那里提出的所有建议都适用于我的代码。

我的代码：

<?php
// required headers
header("Access-Control-Allow-Origin: null");
header("Content-Type: application/json; charset=UTF-8");
header("Access-Control-Allow-Methods: POST");
header("Access-Control-Max-Age: 3600");
header("Access-Control-Allow-Headers: Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With");

// files needed to connect to database
include_once '../config/database.php';

// get database connection
$database = new Database();
$conn = $database->getConnection();

$error = "";
if (isset($_GET["key"]) && isset($_GET["email"]) && isset($_GET["action"]) && ($_GET["action"]=="reset") && !isset($_POST["action"])) {
    $key = $_GET["key"];
    $email = $_GET["email"];
    $curDate = date("Y-m-d H:i:s");

    $query = "SELECT * FROM password_reset_temp WHERE email=:email AND `key`=:key";
    $stmt = $conn->prepare($query);
    $stmt->bindParam(":key", $key);
    $stmt->bindParam(":email", $email);
    try {
        $stmt->execute();
    } catch (PDOException $e) {
        echo json_encode(array("message" => $e->getMessage()));
    }
    if ($stmt->rowCount() == 0) {
        $error .= '<h2>Invalid Link</h2>
        <p>The link is invalid/expired. Either you did not copy the correct link
        from the email, or you have already used the key in which case it is 
        deactivated.</p>
        <p><a href="...">
        Click here</a> to reset password.</p>';
    } else {
        $row = $stmt->fetch();
        $expDate = $row['expDate'];
        if ($expDate >= $curDate){
// the part that is not showing begins here                
?>
            <br />
            <form method="post" action="" name="update">
            <input type="hidden" name="action" value="update" />
            <br /><br />
            <label><strong>Enter New Password:</strong></label><br />
            <input type="password" name="pass1" maxlength="15" required />
            <br /><br />
            <label><strong>Re-Enter New Password:</strong></label><br />
            <input type="password" name="pass2" maxlength="15" required/>
            <br /><br />
            <input type="hidden" name="email" value="<?php echo $email;?>"/>
            <input type="submit" value="Reset Password" />
            </form>
            <?php
        } else {
            $error .= "<h2>Link Expired</h2>
            <p>The link is expired. You are trying to use the expired link which 
            as valid only 24 hours (1 days after request).<br /><br /></p>";
        }
    }
    if($error!=""){
        echo "<div class='error'>".$error."</div><br />";
    } 
} // isset email key validate end


if(isset($_POST["email"]) && isset($_POST["action"]) &&
 ($_POST["action"]=="update")){
$error="";
$pass1 = mysqli_real_escape_string($con,$_POST["pass1"]);
$pass2 = mysqli_real_escape_string($con,$_POST["pass2"]);
$email = $_POST["email"];
$curDate = date("Y-m-d H:i:s");
if ($pass1!=$pass2){
$error.= "<p>Password do not match, both password should be same.<br /><br /></p>";
  }
  if($error!=""){
echo "<div class='error'>".$error."</div><br />";
}else{
$pass1 = md5($pass1);
mysqli_query($con,
"UPDATE `users` SET `password`='".$pass1."', `trn_date`='".$curDate."' 
WHERE `email`='".$email."';"
);

mysqli_query($con,"DELETE FROM `password_reset_temp` WHERE `email`='".$email."';");

echo '<div class="error"><p>Congratulations! Your password has been updated successfully.</p>
<p><a href="...">
Click here</a> to Login.</p></div><br />';
   } 
}
?>

我的 .htaccess 看起来像这样

# Turn on the rewrite engine
RewriteEngine  on
# If the request doesn't end in .php (Case insensitive) continue processing rules
RewriteCond %{REQUEST_URI} !\.php$ [NC]
# If the request doesn't end in a slash continue processing the rules
RewriteCond %{REQUEST_URI} [^/]$
# Rewrite the request with a .php extension. L means this is the 'Last' rule
RewriteRule ^(.*)$ $1.php [L]

输出：

<br />
            <form method="post" action="" name="update">
            <input type="hidden" name="action" value="update" />
            <br /><br />
            <label><strong>Enter New Password:</strong></label><br />
            <input type="password" name="pass1" maxlength="15" required />
            <br /><br />
            <label><strong>Re-Enter New Password:</strong></label><br />
            <input type="password" name="pass2" maxlength="15" required/>
            <br /><br />
            <input type="hidden" name="email" value="..."/>
            <input type="submit" value="Reset Password" />
            </form>

该目录中的所有其他 .php 文件都可以正常工作。如果您需要任何其他信息，请告诉我。

Answer 1

header("Content-Type: application/json; charset=UTF-8");

你说它是 JSON 而不是 HTML。

浏览器试图将其视为 JSON，但失败，并将其显示为文本。