简单的PHP视频上传系统

Question

下面是我的post方法的php函数。我没有收到任何错误，但是它没有上传到我指定的文件夹中。

我使用的是localhost，数据库没有错误！

<div id="box">
<form method='post' enctype="multipart/form-data"> 
    <?php

       if(isset($_FILES['video'])){

        $name = $_FILES['video']['name'];
        $type = explode('.', $name);
        $type = end($type);
        $size = $_FILES['video']['name'];
        $random_name = rand();
        $tmp = $_FILES['video']['tmp_name'];

        if($type != 'mp4' && $type != 'mp4' && $type != 'flv'){
            $message = "Video Format Not Supported!";
        }

        else {
            move_uploaded_file($tmp, 'videos/'.$random_name.'.'.$type);
            mysql_query("INSERT INTO videos VALUES('.' '$name'; 'videos/$random_name.$type')");
            $message = "Successfully Uploaded!";

        }

        echo "$message"; 

       } 
    ?>


    Select Video : <br/>
    <input type='file' name="video" />
    <br/><br/>
    <input type="submit" value="Upload" />
</form>