MailSender.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;

require 'PHPMailer-master/src/Exception.php';
require 'PHPMailer-master/src/PHPMailer.php';
require 'PHPMailer-master/src/SMTP.php';


function sendEmail($MailUser, $state, $username, $department, $time)
{
    //Create an instance; passing `true` enables exceptions
    $mail = new PHPMailer(true);

    try {
        //Server settings
        //$mail->SMTPDebug = SMTP::DEBUG_SERVER;
        $mail->SMTPDebug = 0;                      //Enable verbose debug output
        $mail->isSMTP();                                            //Send using SMTP
        $mail->Host       = 'smtp.gmail.com';                     //Set the SMTP server to send through
        $mail->SMTPAuth   = true;                                   //Enable SMTP authentication
        $mail->Username   = 'vietwwezxc@gmail.com';                     //SMTP username
        $mail->Password   = 'rieo ibmu ibnj snzj';                               //SMTP password
        $mail->SMTPSecure = PHPMailer::ENCRYPTION_SMTPS;            //Enable implicit TLS encryption
        $mail->Port       = 465;                                    //TCP port to connect to; use 587 if you have set `SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS`
    
        //Recipients
        $mail->setFrom('Manager@iotenterprise.vn', 'BestIotEnterprise');
        $mail->addAddress($MailUser);     //Add a recipient
    
        //Content
        $mail->isHTML(true);                                  //Set email format to HTML
        $mail->Subject = 'Attendance Notification!';
        $mail->Body = '<strong>State:</strong> <b>' . strtoupper($state) . '</b><br><br>'
        . '<strong>Time:</strong> ' . strtoupper($time) . ' / ' . date('Y-m-d') . '<br>'
        . '<strong>User Name:</strong> ' . strtoupper($username) . '<br>'
        . '<strong>Department:</strong> ' . strtoupper($department) . '<br>';
        $mail->send();
        //echo 'Message has been sent';
    } catch (Exception $e) {
        //echo "Message could not be sent. Mailer Error: {$mail->ErrorInfo}";
    }
}