Dynamically create CSV and send as attachment in emails

create_and_send_csv_as_email_attachment.php

function send_csv_mail($data, $body, $to = 'email@example.com', $subject = 'Website Report', $from = 'waqashassan98@gmail.com') {

  
	if (!$fp = fopen('php://temp', 'w+')) echo "unable to create csv";
	foreach ($data as $row)
	{
		fputcsv($fp, $row);
	}
	rewind($fp);
	$csvData = stream_get_contents($fp);

		
	// Make the attachment
    $attachment = chunk_split(base64_encode($csvData)); 
	$filename = "booking_report_".date('m-d-Y').".csv";


    $eol = PHP_EOL;
	$uid = md5(uniqid(time()));
	// Basic headers
	$header = "From: ".$from." <".$from.">".$eol;
	$header .= "Reply-To: ".$from.$eol;
	$header .= "MIME-Version: 1.0\r\n";
	$header .= "Content-Type: multipart/mixed; boundary=\"".$uid."\"";

	// Put everything else in $message
	$message = "--".$uid.$eol;
	$message .= "Content-Type: text/html; charset=ISO-8859-1".$eol;
	$message .= "Content-Transfer-Encoding: 8bit".$eol.$eol;
	$message .= $body.$eol;
	$message .= "--".$uid.$eol;
	$message .= "Content-Type: application/csv; name=\"".$filename."\"".$eol;
	$message .= "Content-Transfer-Encoding: base64".$eol;
	$message .= "Content-Disposition: attachment; filename=\"".$filename."\"".$eol;
	$message .= $attachment.$eol;
	$message .= "--".$uid."--";

	if (mail($to, $subject, $message, $header))
	{
	    return "mail_success";
	}
	else
	{
	    return "mail_error";
	}

}