Downloading attachments to directory with IMAP in PHP, randomly works

Question

I found PHP code online to download attachments to a directory using IMAP from here. http://www.nerdydork.com/download-pop3imap-email-attachments-with-php.html

I modified it slightly changing

        $structure = imap_fetchstructure($mbox, $jk);
        $parts = ($structure->parts);

to

        $structure = imap_fetchstructure($mbox, $jk);
        $parts = ($structure);

to get it to run properly, as otherwise I got an error about how stdClass doesn't define a property called $parts. Doing that, I was able to download all the attachments. I tested it again recently though, and it didn't work. Well, it didn't work 6 times, worked the 7th, and then hasn't worked since. I'm thinking it has something to do with me screwing up the parts handling, since count($parts) keeps returning 1 for each message, so it's not finding any attachments I think.

Since it downloaded the attachments at one point with no issues, I feel confident that the area things are getting screwed up is right here. Before this block of code is a for loop that goes through each message in the box, and after it is loop that just goes through $parts for each imap structure. Thanks for any help you can provide. I looked at the imap_fetchstructure page on php.net and can't figure out what I'm doing wrong.

Edit: I just double-checked the folder after typing up my question and it all popped up. I feel like I'm going nuts. I hadn't run the code since a few minutes before I started typing this, and it doesn't make sense to me that it would take this long to trigger. I have some 800 messages in the mailbox, but I figured since it printed my statement at the very end of the PHP that all of the file creation work was done.

Answer 1

Check out this code:

           $structure = imap_fetchstructure($mailbox, $index);

       $attachments = array();
       if(isset($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($connection, $message_number, $i+1);
             if($structure->parts[$i]->encoding == 3) { // 3 = BASE64
               $attachments[$i]['attachment'] = base64_decode($attachments[$i]['attachment']);
             }
             elseif($structure->parts[$i]->encoding == 4) { // 4 = QUOTED-PRINTABLE
               $attachments[$i]['attachment'] = quoted_printable_decode($attachments[$i]['attachment']);
             }
           }             
         } // for($i = 0; $i < count($structure->parts); $i++)
       } // if(isset($structure->parts) && count($structure->parts))