Send email with attachment file in php

<form action="" enctype="multipart/form-data" method="post">
<input type="file" name="attc">
<input type="submit" name="sub" value="send" />
</form>
<?php
function mail_attachment($filename, $path, $mailto, $from_mail, $from_name, $replyto, $subject, $message) {
    $file = $path.$filename;
    $file_size = filesize($file);
    $handle = fopen($file, "r");
    $content = fread($handle, $file_size);
    fclose($handle);
    $content = chunk_split(base64_encode($content));
    $uid = md5(uniqid(time()));
    $name = basename($file);
    $header = "From: ".$from_name." <".$from_mail.">\r\n";
    $header .= "Reply-To: ".$replyto."\r\n";
    $header .= "MIME-Version: 1.0\r\n";
    $header .= "Content-Type: multipart/mixed; boundary=\"".$uid."\"\r\n\r\n";
    $header .= "This is a multi-part message in MIME format.\r\n";
    $header .= "--".$uid."\r\n";
    $header .= "Content-type:text/plain; charset=iso-8859-1\r\n";
    $header .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
    $header .= $message."\r\n\r\n";
    $header .= "--".$uid."\r\n";
    $header .= "Content-Type: application/octet-stream; name=\"".$filename."\"\r\n";
    $header .= "Content-Transfer-Encoding: base64\r\n";
    $header .= "Content-Disposition: attachment; filename=\"".$filename."\"\r\n\r\n";
    $header .= $content."\r\n\r\n";
    $header .= "--".$uid."--";
    if (mail($mailto, $subject, "", $header)) {
        echo "mail send ... Successfully";
    } else {
        echo "ERROR!";
    }
}
if(isset($_POST['sub']))
{

$filename = $_FILES['attc']['name'];
move_uploaded_file($_FILES['attc']['tmp_name'],"file_attached/".$filename);
$path = "file_attached/";
$mailto = "your-email@gmail.com";
$from_mail = "from@gmail.com";
$from_name = "from_name";
$replyto = "reply@gmail.com";
$subject = "new testing";
$message = "Please find attached file";
echo mail_attachment($filename, $path, $mailto, $from_mail, $from_name, $replyto, $subject, $message);
}
?>

All child checkbox checked on checked in jquery

<script src="http://code.jquery.com/jquery-latest.min.js" type="text/javascript"></script>
<script>
var nocon = jQuery.noConflict();
nocon(document).ready(function(){

  nocon(".chk").click(function(ev) {
 
    nocon(this).siblings('ul').find("input[type='checkbox']").prop('checked', this.checked);
        ev.stopImmediatePropagation();
  });
});
</script>

<ul><li><input type="checkbox" class="chk"><a href="">1</a>
   <ul>
   <li>
   <input type="checkbox"class="chk"><a href="">2_1</a>
                       <ul>
                       <li><input type="checkbox" class="chk"><a href="">3_1</a></li>
                       <li><input type="checkbox" class="chk"><a href="">3_2</a></li>
                       </ul>
                    
                      </li>
                    <li>
                      <input type="checkbox"class="chk"><a href="">2_2</a>
                       <ul>
                       <li><input type="checkbox" class="chk"><a href="">3_3</a></li>
                       <li><input type="checkbox" class="chk"><a href="">3_4</a></li>
                       </ul>
                    
                      </li>
                      </ul>
                      </li>
        <li><input type="checkbox" class="chk"><a href="">1</a>
   <ul>
   <li>
   <input type="checkbox"class="chk"><a href="">2_1</a>
                       <ul>
                       <li><input type="checkbox" class="chk"><a href="">3_1</a></li>
                       <li><input type="checkbox" class="chk"><a href="">3_2</a></li>
                       </ul>
                    
                      </li>
                    <li>
                      <input type="checkbox"class="chk"><a href="">2_2</a>
                       <ul>
                       <li><input type="checkbox" class="chk"><a href="">3_3</a></li>
                       <li><input type="checkbox" class="chk"><a href="">3_4</a></li>
                       </ul>
                    
                      </li>
                      </ul>
                      </li>            
                    
                      </ul>