如何检查$ _FILE是否在php中设置? [英] how to check if a $_FILE is set in php?

问题描述

我用3个< input type ="file"/>

我看到我得到了一个带有 array(name =>")的数组.

I see that I get an array with array(name=>"").

所以我改为检查是否($ _FILE ["myfilename"] ["name"] ==").

这有效，但对我来说似乎很不寻常.

This works but it seems rather unusual to me.

我想知道是否有更好的方法来检查是否设置了文件输入?

I was wondering if there was a better way to check if a file input is set or not?

推荐答案

有: is_uploaded_file() .处理上传的文件时，应始终使用它(及其表亲 move_uploaded_file() )出于安全原因.

There is: is_uploaded_file(). When dealing with uploaded files, you should always use it (and its cousin move_uploaded_file()) for security reasons.

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