Sending Email With An Attachment Using PHPMailer

<?php

$mail = new PHPMailer();

$mail->From     = "from@example.com";
$mail->FromName = "Full Name";
$mail->addReplyTo("reply@example.com", "Reply Address");
$mail->Subject  = "Subject Text";
$mail->Body     = "This is a sample basic text email with an attachment using PHPMailer.";

// Add Static Attachment
$attachment = '/path/to/your/file.pdf';
$mail->AddAttachment($attachment , 'RenamedFile.pdf');

// Add Second Attachment, run-time created. ie: CSV to be open with Excel
$csvHeader = "header1,header2,header3";
$csvData = "row1col1,row1col2,row1col3\nrow2col1,row2col2,row2col3";

$mail->AddStringAttachment($csvHeader ."\n" . $csvData, 'your-csv-file.csv', 'base64', 'application/vnd.ms-excel');

if($mail->send()) {
    // Success! Redirect to a thank you page. Use the
    // POST/REDIRECT/GET pattern to prevent form resubmissions
    // when a user refreshes the page.
  
    header('Location: http://example.com/path/to/thank-you.php', true, 303);
    exit;
} 
else {
    echo "Error: " . $mail->ErrorInfo;
}