Sometimes get the attachment. sometimes not! using imap - php

Question

i have a script to download all pdf file and save it in a library...
im using gmail account.. Imap is enabled;
using centOS 5.11, openssl version: 1.0.1g:
Why sometimes it works.. and why sometimes wont and have a error!
error says
PHP Warning: imap_open(): Couldn't open stream {imap.gmail.com:993/imap/ssl}INBOX
No such host as imap.gmail.comPHP Notice: Unknown: No such host as imap.gmail.com (errflg=2)
this is the code:
<?php
$hostname = '{imap.gmail.com:993/imap/ssl}INBOX';
$username = 'xxxxxx#gmail.com';
$password = 'password';
$savedirpath = "/myLibrary";
$type = 'ReadAttachment';
$obj = new $type;
$obj->getdata($hostname ,$username ,$password,$savedirpath);
class ReadAttachment
{
function getdecodevalue($message,$coding) {
switch($coding) {
case 0:
case 1:
$message = imap_8bit($message);
break;
case 2:
$message = imap_binary($message);
break;
case 3:
case 5:
$message=imap_base64($message);
break;
case 4:
$message = imap_qprint($message);
break;
}
return $message;
}
function getdata($hostname ,$username ,$password,$savedirpath) {
$savedirpath = str_replace('\\', '/', $savedirpath);
if (substr($savedirpath, strlen($savedirpath) - 1) != '/') {
$savedirpath .= '/';
}
$mbox = imap_open ($hostname , $username , $password) or die("can't connect: " . imap_last_error());
$message = array();
$message["attachment"]["type"][0] = "text";
$message["attachment"]["type"][1] = "multipart";
$message["attachment"]["type"][2] = "message";
$message["attachment"]["type"][3] = "application";
$message["attachment"]["type"][4] = "audio";
$message["attachment"]["type"][5] = "image";
$message["attachment"]["type"][6] = "video";
$message["attachment"]["type"][7] = "other";
$MC = imap_check($mbox);
$result = imap_fetch_overview($mbox,"1:{$MC->Nmsgs}",0);
$jk = 1;
foreach ($result as $overview) {
$date= strtotime($overview->date);
$unixDate = date("YmdHis", $date);
$from= $overview->from;
$structure = imap_fetchstructure($mbox, $jk);
$parts = (isset($structure->parts) ? $structure->parts : false);
$fpos=2;
for($i = 1; $i < count($parts); $i++) {
$message["pid"][$i] = ($i);
$part = $parts[$i];
if($part->disposition == "ATTACHMENT") {
$message["type"][$i] = $message["attachment"]["type"][$part->type] . "/" . strtolower($part->subtype);
$message["subtype"][$i] = strtolower($part->subtype);
$ext=$part->subtype;
$params = $part->dparameters;
$filename=$part->dparameters[0]->value;
$mege="";
$data="";
$mege = imap_fetchbody($mbox,$jk,$fpos);
$filename="$filename";
$extension=pathinfo($filename);
$file_extension = $extension['extension'];
if($file_extension === "pdf")
{
$new_filename = $filename;
$fp=fopen($savedirpath.$new_filename,'w');
$data=$this->getdecodevalue($mege,$part->type);
fputs($fp,$data);
fclose($fp);
$fpos+=1;
}
}
} imap_delete($mbox,$jk);
$jk++;
}
imap_expunge($mbox);
imap_errors() ;
imap_close($mbox);
}
}
?>