PHP下载文件函数

一个PHP下载函数,在写服务器的时候可以用到。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">         
<html xmlns="http://www.w3.org/1999/xhtml" lang="zh-cn">        
<head>        
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />        
<meta http-equiv="Content-Language" content="UTF-8" />        
</head>        
<form method="post">        
<input name="url" size="20" />        
<input name="submit" type="submit" />        
<!-- <input type="hidden" name="MAX_FILE_SIZE" value="2097152" />-->        
</form>        
<?php
    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);
    }
?>

posted on 2011-08-16 01:15  @Yilee  阅读(2951)  评论(0编辑  收藏  举报

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