php 进行多图上传时，html文件中使用file 来接收文件为什么没有生成文件数组
通过var_dump($_File)
如果使用file[]
回复内容：
通过var_dump($_File)
如果使用file[]
首先，你要传递数组参数，参数名后面必须带有 [] 才能被正常解析，所有你必须用 upload_file[] 作为参数名。
其次，数组形式的文件上传，在PHP解析里并不是解析成文件的数组（这个堪称是BUG一般的存在），而是会解析成你看到的那样的结果，在参数中 name 也变成了一个数组， name0] 表示第一个文件的名字 name[1] 表示第二个文件的名字… ，而 type ， tmp_name 等其他的参数 也是如此， 也就是说，你要获取上传第一个文件的信息，你获取的应该是 $_FILES['upload_file'0] ， $_FILES['upload_file'[0] ...
无奈PHP解析文件数组时就是这样的，这个经常被吐槽
name="upload_file[]"
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