在PHP中查看文件信息？
我刚刚制作了一个文件上传表单，到目前为止我已经有了它，以便用户只能上传自己的.mp3；
目前，我的表单所做的就是将文件名更改为 $username 。 “-”。 $标题； 他们输入的变量；
然而，该表单仍处于测试阶段，我想知道是否有一种方法可以使用 PHP 查看文件信息（如果不是所有文件，则为 .mp3），然后使用 $username 和 $title 重写文件信息，以及用户的其他输入 - 即在上传文件之前。
我怎样才能这样做呢？
I have just made a file upload form, and so far I have it so that users can only upload their own .mp3's;
Currently, all my form does is change the filename to $username . " - " . $title; in which the variables they enter;
The form is still in beta, however, and I am asking if there is a way I can view the file information (for .mp3 if not all files) with PHP, and then rewrite the file information with the $username and $title, and additional inputs from the user - that is, before uploading the file.
How can I do so?
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您可以使用 getID3() 解析器来获取 MP3 文件信息。
还有这些 ID3 PHP 函数可用。
You can use the getID3() parser to get MP3 file information.
There are also these ID3 PHP functions available.
这就是你所追求的吗？ http://getid3.sourceforge.net/
Is this what you're after? http://getid3.sourceforge.net/
有多种方法可以做到这一点......有一个名为 id3 的 pecl ext，它允许您读取 mp3 文件并为其设置标签。
链接到 pecl:http://pecl.php.net/package/id3 ，也在此处是一个关于如何使用 ext....http://devzone.zend.com/article/4025-Reading-and-Writing-MP3-and-Photo-Metadata-with-PECL-
文件上未设置 mp3 标签，您可以随时尝试 ffmpeg 它将提供有关该文件的所有信息编码...还有一个围绕 ffmpeg 的 php 库，这可能很有用 http://sourceforge .net/projects/ffmpeg-phpclass/
The are various ways of doing this....there is a pecl ext called id3 which allows you to read and set tags to the mp3 file.
link to pecl:http://pecl.php.net/package/id3 , also here is a link to a nice tutorial on how to use the ext....http://devzone.zend.com/article/4025-Reading-and-Writing-MP3-and-Photo-Metadata-with-PECL-
Should the mp3 tags not be set on the file, you can always try ffmpeg which will give all the information about the file encoding ...there is also a php lib that wraps around ffmpeg which might be useful http://sourceforge.net/projects/ffmpeg-phpclass/
如果您无法安装 php id3 模块，您可以使用 此功能。
If you can't install the php id3 module you can use this function.
听起来您只是想重命名该文件。 如果是这种情况，你会这样做：
参考：https:// www.php.net/manual/en/function.rename.php
G-Man
It sounds like you're just trying to rename the file. If that's the case you'd do something like this:
Reference: https://www.php.net/manual/en/function.rename.php
G-Man
如果您确实询问是否可以“在上传文件之前”获取文件信息，那么不，您不能。 您无法从 Web 服务器读取客户端硬盘上的文件。 其他答案涵盖了文件上传后您可以执行的操作。
If you're really asking if you can get file information "before uploading the file," then No, you can't. You can't read files on a client's hard drive from a web server. Other answers cover what you can do after the file is uploaded.