Отправка нескольких файлов через mail()

function multi_attach_mail($to, $subject, $message, $senderEmail, $senderName, $files = array()){
    // Sender info
    $from = $senderName." <".$senderEmail.">";
    $headers = "From: $from";

    // Boundary
    $semi_rand = md5(time());
    $mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";

    // Headers for attachment
    $headers .= "\nMIME-Version: 1.0\n" . "Content-Type: multipart/mixed;\n" . " boundary=\"{$mime_boundary}\"";

    // Multipart boundary
    $message = "--{$mime_boundary}\n" . "Content-Type: text/html; charset=\"UTF-8\"\n" .
    "Content-Transfer-Encoding: 7bit\n\n" . $message . "\n\n";

    // Preparing attachment
    if(!empty($files)){
        //for($i=0;$i<count($files);$i++){
        foreach($files as $file_name => $file_value){
            if(is_file($file_value)){

                $file_size = filesize($file_value);

                $message .= "--{$mime_boundary}\n";
                $fp =    @fopen($file_value, "rb");
                $data =  @fread($fp, $file_size);
                @fclose($fp);
                $data = chunk_split(base64_encode($data));
                $message .= "Content-Type: application/octet-stream; name=\"".$file_name."\"\n" .
                "Content-Description: ".$file_name."\n" .
                "Content-Disposition: attachment;\n" . " filename=\"".$file_name."\"; size=".$file_size.";\n" .
                "Content-Transfer-Encoding: base64\n\n" . $data . "\n\n";
            }
        }
    }

    $message .= "--{$mime_boundary}--";
    $returnpath = "-f" . $senderEmail;

    // Send email
    $mail = mail($to, $subject, $message, $headers, $returnpath);

    // Return true if email sent, otherwise return false
    if($mail){
        return true;
    }else{
        return false;
    }
}


// Email configuration
$to = 'trigub.ilya@mail.ru';
$from = 'order@rusbelt.ru';
$fromName = 'rusbelt';

$subject = 'Send Email with Multiple Attachments in PHP by CodexWorld';

// Attachment files
$files = array(
    'malaga.png'=>'/home/bitrix/ext_www/b24.rusbelt.ru/upload/crm/3cf/91iv62by6udbhjfy1m8ndnk88bcmrsvm.png',
    'favicon.ico'=>'/home/bitrix/ext_www/b24.rusbelt.ru/favicon.ico'
);

$htmlContent = '
    <h3>Ванька Иванов</h3>
    <h4>This HTML email is sent from the script with multiple attachments using PHP.</h4>
    <p><b>Итого файлов:</b> '.count($files).'</p>';

// Call function and pass the required arguments
$sendEmail = multi_attach_mail($to, $subject, $htmlContent, $from, $fromName, $files);

// Email sending status
if($sendEmail){
    echo 'The email is sent successfully.';
}else{
    echo 'Email sending failed!';
}