如何在 php 中读取放置在服务器上的视频文件 - 视频文件的名称包括 http 包装器

发布于 2024-10-27 10:29:39 字数 454 浏览 2 评论 0原文

我正在使用以下代码，但 fseek 似乎出现警告，并返回 -1 而不是 0。

$file = fopen("http://www.example.com/public_html/data/video/temp.mov", "r") or exit("unable to open file");
fseek($file, -128, SEEK_END);

文件肯定会打开，但 fseek 不起作用。还有其他方法从服务器读取视频吗？

以下是错误信息

Warning: filesize() [function.filesize]: stat failed for 

Warning: fseek() [function.fseek]: stream does not support seeking in

原文

I am using the following code but there appears to be warning with fseek and returns -1 instead of 0.

$file = fopen("http://www.example.com/public_html/data/video/temp.mov", "r") or exit("unable to open file");
fseek($file, -128, SEEK_END);

The file gets opened definately but fseek doesn't work. Is there some other method to read video from server?

Following is the error message

Warning: filesize() [function.filesize]: stat failed for 

Warning: fseek() [function.fseek]: stream does not support seeking in

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小…楫夜泊 2024-11-03 10:29:39

这一定是一些平台相关的问题。试试这个代码：

$filename = "www.example.com/public_html/data/video/temp.mov";
$file = fopen ($filename, "r")
    or exit("unable to open file");
fseek ($file, filesize ($filename) - 128);

HTTP 包装器不支持查找。如果您想通过 HTTP 查找远程文件，您需要获取文件的大小。一种可能的方法是解释目录列表，或发出 HEAD 请求。当您知道文件大小时，可以使用 curl 和范围如下。

这也是获取远程文件大小的方法。

如何使用 cURL 下载文件（此示例将数据加载到 PHP 变量中，仅在您想处理数据时使用，如果您只想将其保存到外部文件中，请使用 CURLOPT_FILE 而不是 CURLOPT_RETURNTRANSFER）：

$c = curl_init (); 
curl_setopt ($c, CURLOPT_URL, "http://example.com/some_dir/some_file.ext"); 
curl_setopt ($c, CURLOPT_RANGE, max (0, $filesize - 128) . '-' . max (0, $filesize - 1));
curl_setopt ($c, CURLOPT_RETURNTRANSFER, true);
$content = curl_exec ();
echo ($content);

It must be some platform dependant problem. Try this code:

$filename = "www.example.com/public_html/data/video/temp.mov";
$file = fopen ($filename, "r")
    or exit("unable to open file");
fseek ($file, filesize ($filename) - 128);

HTTP wrapper does not support seeking. If you want to seek in a remote file thru HTTP you need to get the size of the file. One possible way is to interpret a directory listing, or make a HEAD request. When you know the filesize you can use curl and Range like here.

This is also a method to get remote file size.

How to download a file with cURL (This example loads the data into a PHP variable, use only if you want to process the data, If you just want to save it into an external file use CURLOPT_FILE instead of CURLOPT_RETURNTRANSFER):

$c = curl_init (); 
curl_setopt ($c, CURLOPT_URL, "http://example.com/some_dir/some_file.ext"); 
curl_setopt ($c, CURLOPT_RANGE, max (0, $filesize - 128) . '-' . max (0, $filesize - 1));
curl_setopt ($c, CURLOPT_RETURNTRANSFER, true);
$content = curl_exec ();
echo ($content);

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