我有这个烦人的问题：
下面你会看到我凌乱的上传脚本，每当我上传视频文件时，我都会使用 md5 函数来命名它，因此我的数据库/文件夹中没有同名的视频文件。
问题是当我多次将给定文件上传到数据库时，它每次都以相同的 md5 文件名存储。如果您能帮我修复这个小错误，我将不胜感激。我可能累了或其他什么。我尝试了一百种不同的解决方案，但没有任何解决方法。
这是我的烂摊子：
<?php
class Upload_model extends CI_Model {
var $gallery_path;
var $videos_path;
var $thumbnail;
var $video_name;
var $upload_data;
var $file_name;
var $name;
var $videos_folder = "http://localhost/upload/videos/";
//////////////////////////////
function Upload_model() {
parent::__construct();
$this->videos_path = realpath(APPPATH . '..\videos');
// $this->returnFromDatabase();
}
function do_upload() {
$name = $_FILES['userfile']['name']; // get file name from form
$fileNameParts = explode(".", $name); // explode file name to two part
$fileExtension = end($fileNameParts); // give extension
$fileExtension = strtolower($fileExtension); // convert to lower case
$encripted_pic_name = md5($name) . "." . $fileExtension; // new file name
$config['file_name'] = $encripted_pic_name; //set file name
$config = array(
'allowed_types' => 'avi|mp4|flw|mov',
'upload_path' => $this->videos_path,
'file_name' => $encripted_pic_name
);
$this->load->library('upload', $config);
if ($this->upload->do_upload()) {
$this->upload_data = $this->upload->data(); //Returns array of containing all of the data related to the file you uploaded.
$this->file_name = $this->upload_data['file_name'];
$this->getThumbImage('C:\\xampp\\htdocs\\upload\\videos\\' . $encripted_pic_name);
$insert_data = array(
'name' => $encripted_pic_name,
'path' => 'C:\\xampp\\htdocs\\upload\\videos\\' . $encripted_pic_name,
'thumb_path' => 'C:\\xampp\\htdocs\\upload\\videos\\' . $encripted_pic_name . "_t.jpeg",
'uploaded_by' => 'admin'
);
$this->db->insert('videos', $insert_data); //load array to database
redirect('/welcome');
}
}
function getVideoInformation($videoPath) {
$movie = new ffmpeg_movie($videoPath, false);
$this->videoDuration = $movie->getDuration();
$this->frameCount = $movie->getFrameCount();
$this->frameRate = $movie->getFrameRate();
$this->videoTitle = $movie->getTitle();
$this->author = $movie->getAuthor();
$this->copyright = $movie->getCopyright();
$this->frameHeight = $movie->getFrameHeight();
$this->frameWidth = $movie->getFrameWidth();
$this->pixelFormat = $movie->getPixelFormat();
$this->bitRate = $movie->getVideoBitRate();
$this->videoCodec = $movie->getVideoCodec();
$this->audioCodec = $movie->getAudioCodec();
$this->hasAudio = $movie->hasAudio();
$this->audSampleRate = $movie->getAudioSampleRate();
$this->audBitRate = $movie->getAudioBitRate();
}
function getAudioInformation($videoPath) {
$movie = new ffmpeg_movie($videoPath, false);
$this->audioDuration = $movie->getDuration();
$this->frameCount = $movie->getFrameCount();
$this->frameRate = $movie->getFrameRate();
$this->audioTitle = $movie->getTitle();
$this->author = $movie->getAuthor();
$this->copyright = $movie->getCopyright();
$this->artist = $movie->getArtist();
$this->track = $movie->getTrackNumber();
$this->bitRate = $movie->getBitRate();
$this->audioChannels = $movie->getAudioChannels();
$this->audioCodec = $movie->getAudioCodec();
$this->audSampleRate = $movie->getAudioSampleRate();
$this->audBitRate = $movie->getAudioBitRate();
}
function getThumbImage($videoPath) {
$movie = new ffmpeg_movie($videoPath, false);
$this->videoDuration = $movie->getDuration();
$this->frameCount = $movie->getFrameCount();
$this->frameRate = $movie->getFrameRate();
$this->videoTitle = $movie->getTitle();
$this->author = $movie->getAuthor();
$this->copyright = $movie->getCopyright();
$this->frameHeight = $movie->getFrameHeight();
$this->frameWidth = $movie->getFrameWidth();
$capPos = ceil($this->frameCount / 4);
if ($this->frameWidth > 120) {
$cropWidth = ceil(($this->frameWidth - 120) / 2);
} else {
$cropWidth = 0;
}
if ($this->frameHeight > 90) {
$cropHeight = ceil(($this->frameHeight - 90) / 2);
} else {
$cropHeight = 0;
}
if ($cropWidth % 2 != 0) {
$cropWidth = $cropWidth - 1;
}
if ($cropHeight % 2 != 0) {
$cropHeight = $cropHeight - 1;
}
$frameObject = $movie->getFrame($capPos);
if ($frameObject) {
$imageName = $this->file_name . "_t.jpeg";
$tmbPath = "C:\\xampp\\htdocs\\upload\\videos\\" . $imageName;
$frameObject->resize(120, 90, 0, 0, 0, 0);
imagejpeg($frameObject->toGDImage(), $tmbPath);
} else {
$imageName = "";
}
return $imageName;
}
}