Sending Emails with Mailer in PHP + Symfony

#web #webdev #php #codenewbie

Today, I'll demonstrate how to send an email using Symfony's Mailer component in PHP.

Step 1: Install the Required Library
First, install the Symfony Mailer library with the following command:

composer require symfony/mailer

Step 2: Set Up Email Configuration in PHP
After installing the library, you can configure the email sender and recipient details in your PHP code as shown below:

use Symfony\Component\Mailer\Transport;
use Symfony\Component\Mailer\Mailer;
use Symfony\Component\Mime\Email;

$transport = Transport::fromDsn('smtp://localhost');
$mailer = new Mailer($transport);

$email = (new Email())
    ->from('hello@example.com')
    ->to('you@example.com')
    //->cc('cc@example.com')
    //->bcc('bcc@example.com')
    //->replyTo('fabien@example.com')
    //->priority(Email::PRIORITY_HIGH)
    ->subject('Time for Symfony Mailer!')
    ->text('Sending emails is fun again!')
    ->html('<p>See Twig integration for better HTML integration!</p>');

$mailer->send($email);

Optional: Use Gmail SMTP Settings
To use Gmail’s SMTP, modify the $transport configuration as shown below:

$mail_from = "example@example.com"; 
$pass = urlencode("password"); 
$mail_to = "example@example.com";

// Chúng ta có thể thêm mail cc vào một mảng
$mail_cc_array=array(
    "example12@example.com",
    "example23@example.com",
);
$transport = Transport::fromDsn("smtp://{$mail_from}:{$pass}@smtp.gmail.com:587?encryption=tls");

Step 3: Set Up an Email Template with Twig
If you’d like to use an HTML template for your email, install Twig using the following command:

composer require twig/twig

Then, configure Twig to load templates:

use Twig\Environment;
use Twig\Loader\FilesystemLoader;

$loader = new FilesystemLoader(__DIR__ . '/Views/templates');
$twig = new Environment($loader);
// date email
$templateData = [
    'subject' => 'LẬP TRÌNH WEBSITE | HOANGUYENIT',
    'name' => 'Hoà Nguyễn Coder',
    'message' => 'Chuyên trang chia sẻ các kiến thức liên quan đến. 
    Lập Trình Website và Phát triển Website',
];
// Render data email to template
$htmlContent = $twig->render('email_template.html.twig', $templateData);

Full Example Code
Here’s the complete code to send an email in PHP:

// Install the library with: composer require symfony/mailer
require_once "Config/database.php"; // you change it "vendor/autoload.php" 

use Symfony\Component\Mailer\Transport;
use Symfony\Component\Mailer\Mailer;
use Symfony\Component\Mime\Email;
use Twig\Environment;
use Twig\Loader\FilesystemLoader;

// Configure Twig
$loader = new FilesystemLoader(__DIR__ . '/Views/templates');
$twig = new Environment($loader);

// Email data
$templateData = [
    'subject' => 'WEB DEVELOPMENT | HOANGUYENIT',
    'name' => 'Hoà Nguyễn Coder',
    'message' => 'Sharing insights and knowledge about web development and design.',
];

// Render email content
$htmlContent = $twig->render('email_template.html.twig', $templateData);

// Gmail email & password setup
$mail_from = "example@example.com"; 
$pass = urlencode("password"); 
$mail_to = "recipient@example.com";

// CC emails
$mail_cc_array = [
    "example12@example.com",
    "example23@example.com",
];

$transport = Transport::fromDsn("smtp://{$mail_from}:{$pass}@smtp.gmail.com:587?encryption=tls");
$mailer = new Mailer($transport); 
$email = (new Email())
    ->from($mail_from)
    ->to($mail_to)
    //->cc('cc@example.com')
    ->attachFromPath(__DIR__ . "/Note.txt")
    ->priority(Email::PRIORITY_HIGH)
    ->subject($templateData['subject'])
    ->html($htmlContent); 

// Add each CC email
foreach ($mail_cc_array as $ccEmail) {
    $email->addCc($ccEmail);
}

try {
    $mailer->send($email);
    echo "Email sent successfully!";
} catch (\Exception $e) {
    echo "Failed to send email: " . $e->getMessage();
}