Email attachment does not download with imap_fetchstructure function - mysql

Question

I am trying to download email attachment through imap_fetchstructure().
but attachment does not download to the server.
code other parts are perfectly working. text message insert to the database as I coded. only problem is attachment part, can you please help me to resolve this problem. bellow is my code
#!/usr/bin/php -q
<?PHP
//echo $output;
$servername = "localhost";
$username = "user";
$password = "pssw";
$dbname = "db_name";
$conn = mysqli_connect($servername, $username, $password, $dbname) or die("Connection failed: " . mysqli_connect_error());
/* connect to email */
$hostname = '{example.org:995/pop3/ssl/novalidate-cert}';
$username = 'test#example.org';
$password = '123456';
/* try to connect */
$inbox = imap_open($hostname,$username,$password) or die('Cannot connect to SERVER: ' . imap_last_error());
/* grab emails */
$emails = imap_search($inbox,'NEW');
/* if emails are returned, cycle through each... */
if($emails) {
/* begin output var */
$output = '';
/* put the newest emails on top */
asort($emails);
/* for every email... */
foreach($emails as $email_number) {
/* get information specific to this email */
$overview = imap_fetch_overview($inbox,$email_number,0);
$message = imap_fetchbody($inbox,$email_number,1);
/* get mail structure */
$structure = imap_fetchstructure($inbox, $email_number);
$attachments = array();
/* if any attachments found... */
if(isset($structure->parts) && count($structure->parts))
{
for($i = 0; $i < count($structure->parts); $i++)
{
$attachments[$i] = array(
'is_attachment' => false,
'filename' => '',
'name' => '',
'attachment' => ''
);
if($structure->parts[$i]->ifdparameters)
{
foreach($structure->parts[$i]->dparameters as $object)
{
if(strtolower($object->attribute) == 'filename')
{
$attachments[$i]['is_attachment'] = true;
$attachments[$i]['filename'] = $object->value;
}
}
}
if($structure->parts[$i]->ifparameters)
{
foreach($structure->parts[$i]->parameters as $object)
{
if(strtolower($object->attribute) == 'name')
{
$attachments[$i]['is_attachment'] = true;
$attachments[$i]['name'] = $object->value;
}
}
}
if($attachments[$i]['is_attachment'])
{
$attachments[$i]['attachment'] = imap_fetchbody($inbox, $email_number, $i+1);
/* 3 = BASE64 encoding */
if($structure->parts[$i]->encoding == 3)
{
$attachments[$i]['attachment'] = base64_decode($attachments[$i]['attachment']);
}
/* 4 = QUOTED-PRINTABLE encoding */
elseif($structure->parts[$i]->encoding == 4)
{
$attachments[$i]['attachment'] = quoted_printable_decode($attachments[$i]['attachment']);
}
}
}
}
/* iterate through each attachment and save it */
foreach($attachments as $attachment)
{
if($attachment['is_attachment'] == 1)
{
$filename = $attachment['name'];
if(empty($filename)) $filename = $attachment['filename'];
if(empty($filename)) $filename = time() . ".dat";
/* prefix the email number to the filename in case two emails
* have the attachment with the same file name.
*/
$fp = fopen("./" . $email_number . "-" . $filename, "w+");
fwrite($fp, $attachment['attachment']);
fclose($fp);
}
}
//Attachement close
$subject = $overview[0]->subject;
$from = $overview[0]->from;
$received_date = '<span class="date">on '.$overview[0]->date.'</span>';
$output.= '<div class="body">'.$message.'</div>';
}
//INSERT INTO DATABASE
$sql = "INSERT INTO msg_messages (`customer_id`, `msg_title`, `msg_content`, `received`, `handle_by`, `agent_asign`,`dep_id`, `msg_received_date`, `priority_status`, `from_lyca`) VALUES ('".$cus_id."', '".$subject."', '".$remove_customer_mobile_from_message."', '".$cus_mail."', '999999', '999999', 1, '".date("Y-m-d H:i:s")."', 2, 1)";
$result = mysqli_query($conn, $sql);
}
/* close the connection */
imap_close($inbox);
?>