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HomeBackend DevelopmentPHP Tutorial求帮看下这段PHP下载MP4文件的问题,文件下载不完整

function dl_file($file){    $len = filesize($file);    $filename = basename($file);    $file_extension = strtolower(substr(strrchr($filename,"."),1));    switch( $file_extension ) {    case "mp4": $ctype="video/mp4"; break;    default: $ctype="application/force-download";    }    header("Pragma: public");    header("Expires: 0");    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");    header("Cache-Control: public");     header("Content-Description: File Transfer");    header("Content-Type: $ctype");    $header="Content-Disposition: attachment; filename=".$filename."";    header($header );    header("Content-Transfer-Encoding: binary");    header("Content-Length: ".$len);	ob_clean();    flush();    readfile($file);    exit;}dl_file('test.mp4');


在火狐,谷歌浏览器下载正常,IE和迅雷下载文件不完整


回复讨论(解决方案)

ob_clean();
    flush();
    readfile($file);

ob_clean();
    flush();
    readfile($file);


有这句呀

没加mime头

    header("Content-Transfer-Encoding: binary");
    header("Content-Length: ".$len);
这俩删掉试试

没加mime头



MIME类型吗?加那,IIS吗

    header("Content-Transfer-Encoding: binary");
    header("Content-Length: ".$len);
这俩删掉试试





$len = filesize($file);
header("Content-Length: ".$len);
上面2句删除后可以下载,但没统计文件大小,迅雷和IE没显示下载时长。

nginx + php 环境下 没有你说的那个问题,ie和迅雷都可以正常下载 不过我的文件是flv,这样的话也只能说明是mime头出错了
我的代码如下:

function dl_file($file){
    $len = filesize($file);
    $filename = basename($file);
    $file_extension = strtolower(substr(strrchr($filename,"."),1));
    switch( $file_extension ) {
    case "mp4": $ctype="video/mp4"; break;
    default: $ctype="application/force-download";
    }
    header("Pragma: public");
    header("Expires: 0");
    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
    header("Cache-Control: public"); 
    header("Content-Description: File Transfer");
    header("Content-Type: $ctype");
    $header="Content-Disposition: attachment; filename=".$filename."";
    header($header );
    header("Content-Transfer-Encoding: binary");
    header("Content-Length: ".$len);
    ob_clean();
    flush();
    readfile($file);
    exit;
}
dl_file('http://res.805.com/videos/霍山·上林后苑(易仟亿集团) [640x480].flv'); 只改了一个文件名而已  其他的都没变

nginx + php 环境下 没有你说的那个问题,ie和迅雷都可以正常下载 不过我的文件是flv,这样的话也只能说明是mime头出错了
我的代码如下:

function dl_file($file){
    $len = filesize($file);
    $filename = basename($file);
    $file_extension = strtolower(substr(strrchr($filename,"."),1));
    switch( $file_extension ) {
    case "mp4": $ctype="video/mp4"; break;
    default: $ctype="application/force-download";
    }
    header("Pragma: public");
    header("Expires: 0");
    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
    header("Cache-Control: public"); 
    header("Content-Description: File Transfer");
    header("Content-Type: $ctype");
    $header="Content-Disposition: attachment; filename=".$filename."";
    header($header );
    header("Content-Transfer-Encoding: binary");
    header("Content-Length: ".$len);
    ob_clean();
    flush();
    readfile($file);
    exit;
}
dl_file('http://res.805.com/videos/霍山·上林后苑(易仟亿集团) [640x480].flv'); 只改了一个文件名而已  其他的都没变



IE ,迅雷 下载有显示文件大小吗?

没测试过 应该有吧 有"Content-Length头的

你可以去看下ucenter文档

博客看看
http://www.jb51.net/article/46440.htm

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