How can PHP code be optimized to ensure emails are sent to all selected recipients without issues?

When sending emails to multiple recipients in PHP, it is important to optimize the code to ensure that all selected recipients receive the emails without any issues. One way to achieve this is by using a loop to iterate through the list of recipients and send the email to each one individually. This ensures that each recipient receives the email separately and reduces the chances of any issues occurring during the sending process.

// List of recipients
$recipients = array('recipient1@example.com', 'recipient2@example.com', 'recipient3@example.com');

// Loop through each recipient and send the email
foreach ($recipients as $recipient) {
    $to = $recipient;
    $subject = 'Subject of the email';
    $message = 'Body of the email';
    $headers = 'From: your_email@example.com';

    // Send the email
    mail($to, $subject, $message, $headers);
}