phpMailer 使用Gmail 寄信

 Gmail必須要先設定smtp寄信功能

1.檢查IMAP有沒有打開

IMAP開啟教學

2.開啟低安全性應用程式存取權or使用兩段式密碼

先快速設定所以暫時使用低安全性應用連結 ,

設定低安全性應用連結

3.編寫 phpMailer 程式碼如下

<?php
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;

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

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

try {
    //Server settings
    $mail->SMTPDebug = SMTP::DEBUG_SERVER;                      // 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   = '信箱帳號@gmail.com';                     // SMTP username
    $mail->Password   = '密碼';                               // SMTP password
    $mail->SMTPSecure = 'ssl';         // Enable TLS encryption; `PHPMailer::ENCRYPTION_SMTPS` encouraged
    $mail->Port       = 465;                                    // TCP port to connect to, use 465 for `PHPMailer::ENCRYPTION_SMTPS` above

    //Recipients
    $mail->setFrom('寄信者信箱帳號@gmail.com', 'Mailer');
    $mail->addAddress('收件者信箱帳號@gmail.com', 'mark');     // Add a recipient
    // $mail->addAddress('ellen@example.com');               // Name is optional
    // $mail->addReplyTo('info@example.com', 'Information');
    // $mail->addCC('cc@example.com');
    // $mail->addBCC('bcc@example.com');

    // Attachments
    // $mail->addAttachment('/var/tmp/file.tar.gz');         // Add attachments
    // $mail->addAttachment('/tmp/image.jpg', 'new.jpg');    // Optional name

    // Content
    $mail->isHTML(true);                                  // Set email format to HTML
    $mail->Subject = 'Here is the subject';
    $mail->Body    = 'This is the HTML message body <b>in bold!</b>';
    $mail->AltBody = 'This is the body in plain text for non-HTML mail clients';

    $mail->send();
    echo 'Message has been sent';
} catch (Exception $e) {
    echo "Message could not be sent. Mailer Error: {$mail->ErrorInfo}";
}
echo 'success';
?>