Php插入查询和电子邮件附件

Question

hope have some help, cant find the problem, i have a script that basically what it doest is submit candidates CV forms.

When a user fill the form whit his personal information and attached his CV, the form will save the information and the cv path in database and leave the cv in a folder inside of the server, than will send a email to the company that post this job. Everything works fine, but only one problem, and this is the CV, this isnt attaching the CV in the email that is sent to the company.

Could someone take a look to the code?

if(isset($_FILES['files'])){


$errors= array();
foreach($_FILES['files']['tmp_name'] as $key => $tmp_name ){
    $file_name = $key.$_FILES['files']['name'][$key];
    $file_size =$_FILES['files']['size'][$key];
    $file_tmp =$_FILES['files']['tmp_name'][$key];
    $file_type=$_FILES['files']['type'][$key];  



    $random_digit=rand(0000,9999);

    $new_file_name=$random_digit.$file_name;

    if($file_size > 2097152){
        $errors[]='File size must be less than 2 MB';
    }       




    $query2="INSERT into candidates (`firstname`,`lastname`,`mobile`,`email`,`message`,`id_company`,`titulo_anuncio`,`job_type`,`data`,ativo) VALUES('$firstname','$lastname','$mobile','$email_candidate','$message','$id_company','$title_en','$job_type','$data','1'); ";
    mysql_query($query2);
    $user_id = mysql_insert_id();

    $query="INSERT into media (`id_candidate`,`file`,`size`,`type`) VALUES('$user_id','$new_file_name','$file_size','$file_type'); ";
    $to = $email;
    $subject = "Domainname.com | Portal of Jobs - New Candidate";

    $body = "";
    $body .= "Title Job: ";
    $body .= $title_en;
    $body .= "
";
    $body .= "Tel: ";
    $body .= $mobile;
    $body .= "
";
    $body .= "Email: ";
    $body .= $email_candidate;
    $body .= "
";
    $body .= "Message: ";
    $body .= $message;
    $body .= "
";
    $body .= "CV: ";
    $body .= "In Attachement";
    $body .= "
";



    $headers = "From:" . $to;
     if (mail($to, $subject, $body,$headers))


    $desired_dir="candidates_cv";
    if(empty($errors)==true){
        if(is_dir($desired_dir)==false){
            mkdir("$desired_dir", 0700);        // Create directory if it does not exist
        }
        if(is_dir("$desired_dir/".$new_file_name)==false){
            move_uploaded_file($file_tmp,"$desired_dir/".$new_file_name);
        }else{                                  // rename the file if another one exist
            $new_dir="$desired_dir/".$new_file_name.time();
             rename($file_tmp,$new_dir) ;               
        }

     mysql_query($query);           
    }else{
            print_r($errors);
    }
}
if(empty($error)){
    echo "<span style=\"color:green;font-weight:bold;\">Submitted whit Sucess Thanks</span>";

}
}