有没有办法解决php空白页错误？

Question

我创建了一个联系页面，但是当我通过向网站的电子邮件地址（gmail 地址）发送电子邮件来测试它时，它显示一个白色页面这是我的联系表单的 php 代码<?phpif (isset ($_POST['submit'])) {    $name = $_POST ['name'];    $mailFrom = $_POST ['email'];    $message = $_POST ['message'];$mailto = "[e-mail]";$headers = "From: ".$mailFrom;$txt = "You have received an e-mail from ".$name.".\n\n".$message;mail($mailTo, $txt, $headers);header ("Location: Contact.html?mailsend"); }这是我的 html 代码 (contact.html) <section class="box1">    <h2>Contact us</h2>    <div class="lines"></div>   <form class="contact-form" action="contactform.php" method= "POST">         <input type= "text" class= "contact-form-text" placeholder="Your name" required>        <input type= "Email" class= "contact-form-text" placeholder="Your email"required>        <textarea class="contact-form-text" placeholder="Your message"required></textarea>        <input type="submit" class="contact-form-btn"value="Send">    </form></section><section class= "box2">    <h3>Didn't find what you are looking for?</h3>    <div class="lines"></div>    <form class="contact-form"  action="contactform.php" method= "POST" >             <input type= "text" name= "name" class= "contact-form-text" placeholder="Your name"required>        <input type= "Email" name= "email" class= "contact-form-text" placeholder="Your email"required>        <textarea class="contact-form-text" name= "message" placeholder="Type what are you looking for"required></textarea>        <input type="submit"  name= "submit" class="contact-form-btn"value="Send">    </form></section><section class= "box3">    <h4>Become a contributor</h4>    <div class="lines"></div>    <form class="contact-form" action="uploads.php" method= "POST" enctype= "multipart/form-data">         <input type= "file" class= "contact-form-text" >        <button type="submit" class="contact-form-btn" name= "submit">Upload</button>    </form></section>

Answer 1

发生这种情况是因为您忘记提供提交按钮的名称，contact.html并且contactform.php它只会检查名称为“提交”的发布事件isset ($_POST['submit'])

 <section class="box1">

    <h2>Contact us</h2>

    <div class="lines"></div>

   <form class="contact-form" action="contactform.php" method= "POST"> 

        <input type= "text" class= "contact-form-text" placeholder="Your name" required>

        <input type= "Email" class= "contact-form-text" placeholder="Your email"required>

        <textarea class="contact-form-text" placeholder="Your message"required></textarea>

        <input type="submit" name="submit" class="contact-form-btn"value="Send">

    </form>

</section>