form.php

<?php

// Import PHPMailer classes into the global namespace
// These must be at the top of your script, not inside a function
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;

// Load Composer's autoloader
require 'vendor/autoload.php';




if (isset($_POST['name']) && isset($_POST['email']) && isset($_POST['message'])) {

      $name = htmlentities($_POST['name']);
      $email = htmlentities($_POST['email']);
      $message = htmlentities($_POST['message']);

      // Instantiation and passing `true` enables exceptions
      $mail = new PHPMailer(true);

      try {

      $mail->IsSMTP();
      $mail->CharSet = 'UTF-8';
      
      $mail->Host       = "smtp.gmail.com"; // SMTP server example
      $mail->SMTPDebug  = 0;                     // enables SMTP debug information (for testing)
      $mail->SMTPAuth   = true;                  // enable SMTP authentication
      $mail->Port       = 587;                    // set the SMTP port for the GMAIL server
      $mail->Username   = '[email protected]';                     // SMTP username
      $mail->Password   = 'n@jik@iko1234';        // SMTP account password example
            $mail->setFrom($email, $name);

      $mail->addAddress('[email protected]');     // Add a recipient

      // Content
      $mail->isHTML(true);                                  // Set email format to HTML
      $mail->Subject = 'Message from ' . $email . ' via contact form';
      $mail->Body    = $message;
      $mail->AltBody = $message;
      
      $mail->send();

      echo "Message sent";

      } catch (Exception $e) {
      echo "Message not sent";
      }

}
?>