仅当文件类型是使用PHP的csv时，查看电子邮件收件箱并将数组设置为文件内容

Question

嘿所以我喜欢做的是让我的脚本检查一下，看看电子邮件的附件是否有扩展名csv，如果是的话，将它的内容添加到一个数组数组中，然后移动到下一封电子邮件，然后查看所有电子邮件将数组数组保存为单独的文件。我正在努力的部分是我检查附件是什么文件类型的部分，只有在文件类型是csv时才会进行，我似乎无法对我应该在线进行的关键字发现任何敬意。如果有人能指出我正确的方向或调整我的代码进行检查，那将非常感谢所以我的代码到目前为止，感谢您提前给我的任何帮助：

<?php include (application.php);
    /* connect to gmail with your credentials */
    $mailbox = '{imap.gmail.com:993/imap/ssl}INBOX'; /* This bit tells the script where to look and what folder to look for */
    $email_server_username = 'YOUR_email_server_username'; /* The email servers username */
    $email_server_username_server_password = 'YOUR_email_server_username_server_password'; /* The password asspciated with the above username */
    /* connect to sql db with your credentials */
    $username = "";
    $password = "";
    $databasename = "testdb"; /*Set testdb to the database name*/
    $databasename = new mysqli("localhost", $username, $password, $databasename) or die("Connection to server failed, please check email_server_username, password and database name"); /*local host should be the ip of the server unless this script is run locally*/
    set_time_limit(3000);

    /* try to connect to server*/
    $inbox = imap_open($mailbox,$email_server_username,$email_server_username_server_password) or die('Failed to connect to Gmail: ' . imap_last_error());
    $email_server_usernames = imap_search($inbox, 'FROM "[email protected]"');
    /* if any email_server_usernames are found, the script will iterate through each of them */
    if($email_server_usernames) {
        $count = 1;
        /* sorts by newest first */
        rsort($email_server_usernames);
        /* for every value in email_server_username... */
        foreach($email_server_usernames as $email_server_username_number){
            /* get information specific to this email */
            $overview = imap_fetch_overview($inbox,$email_server_username_number,0);
            $message = imap_fetchbody($inbox,$email_server_username_number,2);
            /* get mail structure */
            $structure = imap_fetchstructure($inbox, $email_server_username_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_server_username_number, $i+1);
                        /* Extracts the email contents into usable text, 3 = BASE64 encoding*/
                        if($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";
                    $folder = "attachment";
                    if(!is_dir($folder)){
                         mkdir($folder);
                    }
                    $fp = fopen("./". $folder ."/". $email_server_username_number . "-" . $filename, "w+");
                    fwrite($fp, $attachment['attachment']);
                    fclose($fp);
                }
            }
        }
    }
    /* close the connection to the email_server_username server */
    imap_close($inbox);

    echo "####################Script ran with no errors####################";
?>

Answer 1

if($attachments[$i]["file"]["type"] == "text/csv")
{Result}

这会对你有所帮助。