Are there specific encoding considerations to keep in mind when working with email attachments in PHP?

When working with email attachments in PHP, it is important to consider encoding considerations to ensure that the attachments are properly handled and sent correctly. One common encoding method for email attachments is Base64 encoding, which converts binary data into a ASCII string format that can be safely transmitted over email protocols. To properly encode email attachments in PHP using Base64 encoding, you can use the `base64_encode()` function to encode the attachment data before including it in the email. This ensures that the attachment is correctly encoded and can be decoded by the recipient when they receive the email.

// Path to the attachment file
$attachment_path = 'path/to/attachment.pdf';

// Read the attachment file
$attachment_data = file_get_contents($attachment_path);

// Encode the attachment data using Base64
$attachment_encoded = base64_encode($attachment_data);

// Include the attachment in the email
// $mail->addAttachment($attachment_encoded, 'attachment.pdf', 'base64', 'application/pdf');