Send a mail from a registration form with PHP [duplicate] - php

Question

This question already has answers here:
PHP mail function doesn't complete sending of e-mail
(31 answers)
Closed 1 year ago.
Is it possible to send a mail from the code?
I want to make a registration and the credentials should be sent to the user again.
but simply no email arrives
what am I doing wrong
Here is the whole code
<?php
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
require 'C:/xampp/htdocs/Kulinarik/PHPMailer-master/src/Exception.php';
require 'C:/xampp/htdocs/Kulinarik/PHPMailer-master/src/PHPMailer.php';
require 'C:/xampp/htdocs/Kulinarik/PHPMailer-master/src/SMTP.php';
$con= mysqli_connect('localhost','root','123456', 'userdata',);
$email = $_POST['email'];
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$password = rand(0, 999999);
$result = $con->query("SELECT email FROM signup WHERE email = '$email'");
if($result->num_rows == 0) {
$sql = "INSERT INTO signup (firstname, lastname, email, password) VALUES ('$firstname', '$lastname', '$email', '$password')";
$mail = new PHPMailer();
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if ($con->query($sql) === TRUE) {
header("Location: Login.html");
} else {
echo "Error: " . $sql . "<br>" . $con->error;
}
}
else {
echo "User ist bereits registriert";
}
?>
I would really appreciate your help
EDIT 1
i added the phpmailer to my file and loaded it into the code
but how am i going to send an email with it ?

Answer 1

I assume you're a windows user and you don't have a mail server installed, if so I'd recommend using phpmailer PHPmailer link, it's much easier to use and gives way more options then the regular mail()

Answer 2

PHP indeed has a mail() function, but using it with a simple String for its subject and text is bound to fail (it will either be considered as spam by your recipient, or won't be sent at all by your own server).
Properly using mail() required to set corrects headers and encoding.
As said in the comments, it would be easier to use the PHPMailer library instead.