我尝试使用我在互联网上找到的免费脚本,但它给了我Windows用户的问题(即使他们使用的是IE 8,所以我不能让他们让他们升级他们的浏览器。)这里是要求:
如果您有任何实践建议或知道任何优秀的脚本(即使他们已经付款,我已经厌倦了这个问题并且可能会支付付费脚本),我们将提前非常感激。
以下是我目前使用的函数的代码:
function output_file($file, $name, $mime_type=''){
if(!is_readable($file)) die('File not found or inaccessible!');
$size = filesize($file);
$name = rawurldecode($name);
/* Figure out the MIME type (if not specified) */
$known_mime_types=array(
"pdf" => "application/pdf",
"txt" => "text/plain",
"html" => "text/html",
"htm" => "text/html",
"exe" => "application/octet-stream",
"zip" => "application/zip",
"doc" => "application/msword",
"xls" => "application/vnd.ms-excel",
"ppt" => "application/vnd.ms-powerpoint",
"gif" => "image/gif",
"png" => "image/png",
"jpeg"=> "image/jpg",
"jpg" => "image/jpg",
"php" => "text/plain",
"rtf" => "application/rtf",
"csv" => "text/csv"
);
if($mime_type==''){
$file_extension = strtolower(substr(strrchr($file,"."),1));
if(array_key_exists($file_extension, $known_mime_types)){
$mime_type=$known_mime_types[$file_extension];
}else {
$mime_type="application/force-download";
};
};
@ob_end_clean(); //turn off output buffering to decrease cpu usage
// required for IE, otherwise Content-Disposition may be ignored
if(ini_get('zlib.output_compression'))
ini_set('zlib.output_compression', 'Off');
header('Content-Type: ' . $mime_type);
header('Content-Disposition: attachment; filename="'.$name.'"');
header("Content-Transfer-Encoding: binary");
header('Accept-Ranges: bytes');
/* The three lines below basically make the
download non-cacheable */
header("Cache-control: private");
header('Pragma: private');
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
// multipart-download and download resuming support
if(isset($_SERVER['HTTP_RANGE']))
{
list($a, $range) = explode("=",$_SERVER['HTTP_RANGE'],2);
list($range) = explode(",",$range,2);
list($range, $range_end) = explode("-", $range);
$range=intval($range);
if(!$range_end) {
$range_end=$size-1;
}else {
$range_end=intval($range_end);
}
$new_length = $range_end-$range+1;
header("HTTP/1.1 206 Partial Content");
header("Content-Length: $new_length");
header("Content-Range: bytes $range-$range_end/$size");
}else {
$new_length=$size;
header("Content-Length: ".$size);
}
/* output the file itself */
$chunksize = 1*(1024*1024); //you may want to change this
$bytes_send = 0;
if ($file = fopen($file, 'r'))
{
if(isset($_SERVER['HTTP_RANGE']))
fseek($file, $range);
while(!feof($file) &&
(!connection_aborted()) &&
($bytes_send<$new_length)
){
$buffer = fread($file, $chunksize);
print($buffer); //echo($buffer); // is also possible
flush();
$bytes_send += strlen($buffer);
}
fclose($file);
}else die('Error - can not open file.');
die();
}
答案 0 :(得分:2)
实际上,这应该是一件非常容易的事情。它只包含一些标题调用和一个读取文件。
readfile
的PHP手册为您提供了大部分有关如何操作的代码,而不是使用从其他地方获取文件名的代码。
答案 1 :(得分:1)
也许下载文件的时间比授予php执行脚本的时间要长。 如果您的max_execution_time设置低于客户端下载文件所需的时间,则会被切断。您使用的脚本似乎没问题。
答案 2 :(得分:0)
是否有可能PHP错误进入输出并破坏文件?