php下载邮件附件没有功能

Question

我想通过PHP将附件从电子邮件地址下载到PHP脚本所在的服务器。该脚本运行顺畅，但不会加载任何内容。

<?php 
set_time_limit(3000);  
$hostname = '{******************************}INBOX'; 
$username = '*****@**********.de'; # e.g somebody@gmail.com 
$password = '*****************'; 


/* try to connect */ 
$inbox = imap_open($hostname,$username,$password) or die('Cannot connect to Gmail: ' . imap_last_error()); 


/* get all new emails. If set to 'ALL' instead  
 * of 'NEW' retrieves all the emails, but can be  
 * resource intensive, so the following variable,  
 * $max_emails, puts the limit on the number of emails downloaded. 
 *  
 */ 
$emails = imap_search($inbox,'ALL'); 

/* useful only if the above search is set to 'ALL' */ 
$max_emails = 16; 


/* if any emails found, iterate through each email */ 
if($emails) { 

    $count = 1; 

    /* put the newest emails on top */ 
    rsort($emails); 

    /* for every email... */ 
    foreach($emails as $email_number)  
    { 

        /* get information specific to this email */ 
        $overview = imap_fetch_overview($inbox,$email_number,0); 

        /* get mail message */ 
        $message = imap_fetchbody($inbox,$email_number,2); 

        /* 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); 

                    /* 4 = QUOTED-PRINTABLE encoding */ 
                    if($structure->parts[$i]->encoding == 3)  
                    {  
                        $attachments[$i]['attachment'] = base64_decode($attachments[$i]['attachment']); 
                    } 
                    /* 3 = BASE64 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. 
                 */ 
                $fp = fopen($filename, "w+");    // $email_number . "-" .  
                fwrite($fp, $attachment['attachment']); 
                fclose($fp); 
            } 

        } 

        if($count++ >= $max_emails) break; 
    } 

}  

/* close the connection */ 
imap_close($inbox); 

echo "Done"; 

?>

未下载任何附件。该剧本整齐地绑定。可以帮帮我吗？