为什么我的提交按钮不能将信息发送到我想要的 email？ (PHP)

Question

I'm trying to have my submit button send name, email and message to my desired address. When I hit send, i get a page that says "This page isn't working - HTTP error 405." Some notes: I'm using visual studio code and using their live server extension to test it. I have script tags in HTML linking it to my php file (not sure if this matters as it's already linked under form element?) The "contact.php" is my php file. I'm a noobie so I'm hoping I'm making a simple mistake.

// MY PHP

<?php

$userName = $_POST['name'];
$userEmail= $_POST['email'];
$message= $_POST['message'];

$to = "stackoverflowexample@gmail.com";
$body = "";

$body .= "From: ".$userName. "\r\n";
$body .= "Email: ".$userEmail. "\r\n";
$body .= "Message: ".$message. "\r\n";

mail($to,$body);

?>

// MY HTML

              <form action="contact.php" method="POST">
                

                <h2>Send Message</h2>
                <div class="inputbox">
                    <input type="text" name="name" required="required">
                    <span>Full Name</span>
                </div>

                <div class="inputbox">
                    <input type="text" name="email" required="required">
                    <span>Email</span>
                </div>

                <div class="inputbox">
                    <textarea required="required" name="message"></textarea>
                    <span>Type your Message...</span>
                </div>

                <div class="inputbox">
                    <input type="submit" name="" value="Send">
                </div>

            </form>

Answer 1

• If you write both HTML and PHP code in the same file then you need to save that single file as contact.php .
• Also in PHP code Please set the condition to avoid warning like Undefined index
• Also mail function must have at least 3 parameters 1. to 2. Subject 3. Body

See below code

<?php

// set condition 
if(!empty($_POST)) {

$userName = $_POST['name'];
$userEmail= $_POST['email'];
$message= $_POST['message'];

$to = "stackoverflowexample@gmail.com";
$body = "";

$body .= "From: ".$userName. "\r\n";
$body .= "Email: ".$userEmail. "\r\n";
$body .= "Message: ".$message. "\r\n";


// set subject name as second param
mail($to,"test",$body);

}

?>