php下载文件函数的简单应用实例

php下载文件函数





    set_time_limit(24*60*60);
    if (!isset($_POST['submit'])) die ();
    $destination_folder = './down/';   // 文件夹保存下载文件。必须以斜杠结尾
    $url = $_POST['url'];
    $newfname = $destination_folder.basename($url);
    $file = fopen($url, "rb");
    if ($file) {
        $newf = fopen($newfname, "wb");
        if ($newf) while (!feof($file)) {
            fwrite($newf, fread($file, 1024*8), 1024*8);
        }
    }
    if ($file) {
        fclose($file);
    }
    if ($newf) {
        fclose($newf);
    }
?>