<html>

<head>

    <title>上传文件</title>

</head>

<body>

    <form enctype="multipart/form-data" action="upload.php" method="post">

        <input type="file" name="uploadfile" />

        <input type="submit" value="上传"/>

    </form>

</body>

</html>

<?php 

    //上传单文件

    require 'HTTP/Upload.php';

    $upload = new HTTP_Upload();

    $file = $upload->getFiles('uploadfile');

    if ($file->isValid()) {

        $file->moveTo('uploads/');

        echo 'OK!';

    }else {

        echo 'False!';

    }

?>