将MIME类型转换为文件扩展名PHP [英] Convert MIME type to file Extension PHP

问题描述

我已经在PHP文档中浏览了一段时间，但是我找不到将MIME类型扩展名转换为文件类型扩展名的方法.

I've been looking around in the PHP documentation for some time, but I found no way to convert a MIME type extension to a file type extension.

image_type_to_extension

如果文件是图像，则似乎可以使用.在我的特定情况下，mime类型不适用于图像，它们适用于字体类型:"otf，ttf".

Seems to work if the file is an image. In my particular case, the mime types are not for images, they are for font types: 'otf, ttf'.

推荐答案

您可以使用类似的东西:

You could use something like:

function getExtension ($mime_type){

    $extensions = array('image/jpeg' => 'jpeg',
                        'text/xml' => 'xml'
                       );

    // Add as many other Mime Types / File Extensions as you like

    return $extensions[$mime_type];

}

注意:并非每种MIME类型都有固定的文件扩展名.另外，诸如application/octet-stream之类的MIME类型可以引用多个文件扩展名.

Note: not every MIME type has a fixed file extension. Also, MIME types like application/octet-stream can refer to multiple file extensions.

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