How can boundaries be properly implemented in the PHP script to resolve the attachment issue in the email?

The issue with attachments in the email may be resolved by properly setting boundaries in the PHP script. This involves defining boundaries for the different parts of the email, including the attachment, to ensure they are correctly identified and processed by the email client. By implementing boundaries, the email client can distinguish between the email content and attachments, preventing any issues with attachment handling. 

$boundary = md5(uniqid(time()));

// Set headers
$headers = "From: sender@example.com\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: multipart/mixed; boundary=\"$boundary\"\r\n";

// Construct email body
$body = "--$boundary\r\n";
$body .= "Content-Type: text/plain; charset=ISO-8859-1\r\n";
$body .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
$body .= "This is the message body.\r\n\r\n";

// Add attachment
$body .= "--$boundary\r\n";
$body .= "Content-Type: application/pdf; name=\"attachment.pdf\"\r\n";
$body .= "Content-Transfer-Encoding: base64\r\n";
$body .= "Content-Disposition: attachment; filename=\"attachment.pdf\"\r\n\r\n";
$body .= chunk_split(base64_encode(file_get_contents('attachment.pdf'))) . "\r\n";

// Add closing boundary
$body .= "--$boundary--\r\n";

// Send email
mail('recipient@example.com', 'Subject', $body, $headers);

Keywords

boundaries PHP script attachment email implementation

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