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HomeBackend DevelopmentPHP Tutorial php下载文件功能怎么实现,新手

php下载文件功能如何实现,新手求助!
php文件下载怎么写啊?第一次做这个,所以不知道怎么做了,在php页面

上传文件




然后用move_uploaded_file方法将文件放到项目里的upload文件夹下($path = '/upload/documents/'.time();)

在那个php页面里有 输入几个text框,然后就是 上传文件 一个text 旁边是一个Browse按钮,然后点击页面的保存的话,就会将上传文件保存到上面的项目upload文件夹下。

但我想在点击browse按钮,然后选择文件之后,这个文件象征性的在页面中显示,就像很多邮箱里上传文件之后那样,然后再点击页面中的保存按钮,就上传到那个文件夹下,这个我不会

以上是添加内容的页面,但我在编辑这个页面的时候,那个已经上传的文件怎么显示,并且下载啊? 因为在编辑页面中也只有 一个text和旁边的browse按钮。

就是下载的功能也不知道怎么做下去了。下载该怎么做?网上查了点,说是什么直接点击链接(这个链接写在哪里,怎么写)文件的路径。

------解决方案--------------------
$_FILES获取上传文件名,下载使用header函数,但是在header之前不能有输出,一般下载是一个单独的页面
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